{"id":3561,"date":"2025-12-01T14:40:34","date_gmt":"2025-12-01T06:40:34","guid":{"rendered":"https:\/\/quartz-grinding.epic-powder.com\/?p=3561"},"modified":"2025-12-01T14:40:37","modified_gmt":"2025-12-01T06:40:37","slug":"what-is-fused-silica-what-are-the-applications-of-fused-silica","status":"publish","type":"post","link":"https:\/\/quartz-grinding.epic-powder.com\/fr\/what-is-fused-silica-what-are-the-applications-of-fused-silica\/","title":{"rendered":"Qu&#039;est-ce que la silice fondue\u00a0? Quelles sont les applications de la silice fondue\u00a0?"},"content":{"rendered":"<p>Dans les domaines des semi-conducteurs, de l&#039;optique, de l&#039;a\u00e9rospatiale et des c\u00e9ramiques haut de gamme, on trouve un mat\u00e9riau souvent qualifi\u00e9 de \u00ab sable le plus cher \u00bb : la silice fondue. Il ne s&#039;agit pas d&#039;un mat\u00e9riau ordinaire. <a href=\"https:\/\/quartz-grinding.epic-powder.com\/fr\/\">sable de quartz<\/a> Elle est fondue puis refroidie. Il s&#039;agit de la forme la plus pure et la plus stable de silice amorphe (SiO\u2082 &gt; 99,999%) pouvant \u00eatre produite industriellement. La silice fondue est quasiment irrempla\u00e7able dans des applications telles que les machines de lithographie ultraviolette extr\u00eame (EUV), les miroirs des t\u00e9lescopes spatiaux, les stratifi\u00e9s cuivr\u00e9s haute fr\u00e9quence pour la 5G et la fonderie de pr\u00e9cision.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"705\" src=\"https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/12\/Fused-Silica.webp\" alt=\"silice fondue\" class=\"wp-image-3563\" srcset=\"https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/12\/Fused-Silica.webp 800w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/12\/Fused-Silica-300x264.webp 300w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/12\/Fused-Silica-768x677.webp 768w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/12\/Fused-Silica-14x12.webp 14w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/quartz-grinding.epic-powder.com\/fr\/machines\/\">Comment est-ce fabriqu\u00e9 ?<\/a>?<\/h2>\n\n\n\n<p>La silice fondue est cr\u00e9\u00e9e en faisant fondre des cristaux de quartz naturels (cristaux de silice) ou <a href=\"https:\/\/quartz-grinding.epic-powder.com\/fr\/astra-portfolio\/korean-customer-ultrafine-quartz-powder-solution-d97-5-\u03bcm-small-jet-mill-successfully-delivered\/\">silice de haute puret\u00e9<\/a> Le proc\u00e9d\u00e9 consiste \u00e0 chauffer du sable \u00e0 des temp\u00e9ratures sup\u00e9rieures \u00e0 2\u00a0000\u00a0\u00b0C, puis \u00e0 le refroidir rapidement pour former un solide amorphe. Bien que d&#039;apparence simple, il est en r\u00e9alit\u00e9 tr\u00e8s complexe. Seules quatre ou cinq entreprises dans le monde sont capables de produire de mani\u00e8re stable de la silice fondue de qualit\u00e9 optique et semi-conductrice.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Comparaison des principales m\u00e9thodes de production\u00a0:<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>M\u00e9thode<\/th><th>Temp\u00e9rature<\/th><th>Puret\u00e9<\/th><th>Applications typiques<\/th><\/tr><\/thead><tbody><tr><td><strong>Fusion \u00e9lectrique<\/strong><\/td><td>1800\u20132100\u00b0C<\/td><td>99,99\u201399,999%<\/td><td>Creusets photovolta\u00efques, optique g\u00e9n\u00e9rale<\/td><\/tr><tr><td><strong>Fusion de flamme (flamme hydrog\u00e8ne-oxyg\u00e8ne)<\/strong><\/td><td>~2200\u00b0C<\/td><td>99,999\u201399,9999%<\/td><td>Miroirs pour lithographie EUV, substrats de masques<\/td><\/tr><tr><td><strong>Fusion plasma<\/strong><\/td><td>&gt;25000\u00b0C<\/td><td>Jusqu&#039;\u00e0 9N<\/td><td>\u00c9bauches de miroirs de qualit\u00e9 a\u00e9rospatiale, pr\u00e9formes de fibres optiques<\/td><\/tr><tr><td><strong>Fusion \u00e9lectrique continue + d\u00e9gazage sous vide<\/strong><\/td><td>1850\u20131950 \u00b0C<\/td><td>99,9995\u201399,9999%<\/td><td>Creusets de qualit\u00e9 semi-conducteur, CCL haute fr\u00e9quence 5G<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Ce qui d\u00e9termine r\u00e9ellement le prix et les limites d&#039;application de la silice vitreuse, ce sont des facteurs comme la teneur en OH, les impuret\u00e9s m\u00e9talliques, les bulles et les contraintes internes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Propri\u00e9t\u00e9s de la silice fondue<\/h2>\n\n\n\n<p>La silice fondue poss\u00e8de plusieurs propri\u00e9t\u00e9s cl\u00e9s qui la diff\u00e9rencient des autres mat\u00e9riaux\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Haute stabilit\u00e9 thermique<\/strong><br>La silice fondue poss\u00e8de un coefficient de dilatation thermique (CDT) extr\u00eamement faible, ce qui signifie qu&#039;elle se dilate ou se contracte tr\u00e8s peu sous l&#039;effet des variations de temp\u00e9rature, la rendant ainsi tr\u00e8s r\u00e9sistante aux chocs thermiques. Elle est donc parfaitement adapt\u00e9e aux applications soumises \u00e0 des fluctuations de temp\u00e9rature extr\u00eames.<\/li>\n\n\n\n<li><strong>Excellentes propri\u00e9t\u00e9s optiques<\/strong><br>La silice fondue pr\u00e9sente une excellente transmittance sur une large gamme de longueurs d&#039;onde, incluant l&#039;ultraviolet (UV), la lumi\u00e8re visible et l&#039;infrarouge. Sa haute transmission UV la rend id\u00e9ale pour les applications optiques, telles que les lentilles, les miroirs et autres composants optiques de pr\u00e9cision.<\/li>\n\n\n\n<li><strong>inertie chimique<\/strong><br>La silice fondue est tr\u00e8s r\u00e9sistante \u00e0 la plupart des acides, des bases et des solvants organiques. Elle ne r\u00e9agit pas avec l&#039;eau, ce qui la rend id\u00e9ale pour une utilisation dans des environnements difficiles o\u00f9 d&#039;autres mat\u00e9riaux pourraient se d\u00e9grader ou se corroder.<\/li>\n\n\n\n<li><strong>Haute puret\u00e9<\/strong><br>La silice vitreuse est reconnue pour son exceptionnelle puret\u00e9, d\u00e9passant g\u00e9n\u00e9ralement 99,91 % TP3T. Ce niveau de puret\u00e9 est crucial pour des applications sensibles telles que la fabrication de semi-conducteurs et d&#039;instruments scientifiques.<\/li>\n\n\n\n<li><strong>R\u00e9sistance m\u00e9canique<\/strong><br>Malgr\u00e9 sa faible densit\u00e9, la silice vitreuse pr\u00e9sente une bonne r\u00e9sistance m\u00e9canique, notamment par rapport \u00e0 d&#039;autres mat\u00e9riaux verriers. Elle r\u00e9siste \u00e0 l&#039;abrasion et peut \u00eatre utilis\u00e9e dans des environnements exigeants.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"596\" src=\"https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/ultrafine-quartz-powder-solution-jet-mill.webp\" alt=\"Broyeur \u00e0 jet d&#039;eau pour poudre de quartz ultrafine\" class=\"wp-image-3559\" srcset=\"https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/ultrafine-quartz-powder-solution-jet-mill.webp 800w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/ultrafine-quartz-powder-solution-jet-mill-300x224.webp 300w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/ultrafine-quartz-powder-solution-jet-mill-768x572.webp 768w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/ultrafine-quartz-powder-solution-jet-mill-16x12.webp 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Broyeur \u00e0 jet d&#039;eau pour poudre de quartz ultrafine<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Applications de la silice fondue<\/h2>\n\n\n\n<p>Les propri\u00e9t\u00e9s uniques de la silice fondue en font un mat\u00e9riau id\u00e9al pour une large gamme d&#039;applications dans divers secteurs industriels\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Industrie de l&#039;optique et de la photonique<\/strong><br>La silice fondue est largement utilis\u00e9e dans la fabrication de composants optiques tels que les lentilles, les miroirs, les prismes et les fibres optiques. Gr\u00e2ce \u00e0 son excellente transmission des UV et \u00e0 son faible coefficient de dilatation thermique, elle est le mat\u00e9riau de pr\u00e9dilection pour les syst\u00e8mes optiques de haute performance, notamment les instruments scientifiques, les \u00e9quipements laser et les t\u00e9lescopes spatiaux.<\/li>\n\n\n\n<li><strong>Fabrication de semi-conducteurs<\/strong><br>Dans la production de semi-conducteurs, la silice fondue est utilis\u00e9e pour les photomasques, les supports de plaquettes et les chambres de r\u00e9action. Sa grande puret\u00e9 et sa r\u00e9sistance \u00e0 la corrosion chimique sont essentielles \u00e0 la fabrication des circuits int\u00e9gr\u00e9s, o\u00f9 m\u00eame des contaminants infimes peuvent affecter les performances des dispositifs.<\/li>\n\n\n\n<li><strong>Applications \u00e0 haute temp\u00e9rature<\/strong><br>La silice fondue r\u00e9siste aux temp\u00e9ratures extr\u00eames sans se d\u00e9former ni se fissurer, ce qui la rend tr\u00e8s pr\u00e9cieuse dans des secteurs comme l&#039;a\u00e9rospatiale, la d\u00e9fense et l&#039;\u00e9nergie. Elle est utilis\u00e9e dans la fabrication de composants tels que les rev\u00eatements de fours, les creusets et les mat\u00e9riaux d&#039;isolation haute temp\u00e9rature.<\/li>\n\n\n\n<li><strong>Industrie du verre et de la c\u00e9ramique<\/strong><br>La silice vitreuse est utilis\u00e9e comme mati\u00e8re premi\u00e8re dans la production de verres et de c\u00e9ramiques sp\u00e9ciaux. Elle sert \u00e9galement de mat\u00e9riau r\u00e9fractaire dans les fours et autres \u00e9quipements de traitement \u00e0 haute temp\u00e9rature, contribuant \u00e0 r\u00e9duire la consommation d&#039;\u00e9nergie gr\u00e2ce \u00e0 son excellente stabilit\u00e9 thermique.<\/li>\n\n\n\n<li><strong>Protection chimique et environnementale<\/strong><br>Gr\u00e2ce \u00e0 son inertie chimique, la silice vitreuse est couramment utilis\u00e9e dans les \u00e9quipements de laboratoire, tels que les r\u00e9acteurs, et dans les applications n\u00e9cessitant une protection contre la corrosion chimique. Elle est \u00e9galement employ\u00e9e dans la fabrication de syst\u00e8mes de filtration pour liquides et gaz, offrant des propri\u00e9t\u00e9s de filtration performantes gr\u00e2ce \u00e0 sa grande surface sp\u00e9cifique et \u00e0 sa stabilit\u00e9.<\/li>\n\n\n\n<li><strong>Fonderie et fonderie de m\u00e9taux<\/strong><br>La silice fondue est utilis\u00e9e comme mat\u00e9riau de moule en fonderie. Son faible coefficient de dilatation garantit que les moules conservent leur forme pendant le processus de coul\u00e9e, \u00e9vitant ainsi les d\u00e9fauts dans le produit final.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi la silice fondue est-elle essentielle pour les semi-conducteurs et les machines de lithographie\u00a0?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/10\/Jet-mill-MQW20-1.webp\" alt=\"Broyeur \u00e0 jet MQW20\" class=\"wp-image-3404\" srcset=\"https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/10\/Jet-mill-MQW20-1.webp 800w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/10\/Jet-mill-MQW20-1-300x225.webp 300w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/10\/Jet-mill-MQW20-1-768x576.webp 768w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/10\/Jet-mill-MQW20-1-16x12.webp 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Broyeur \u00e0 jet MQW20<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Lithographie EUV\u00a0: seule la lumi\u00e8re ultraviolette extr\u00eame de 193\u00a0nm et 13,5\u00a0nm la reconna\u00eet.<\/h3>\n\n\n\n<p>La silice fondue pr\u00e9sente un taux de transmission exceptionnel (&gt;99,99%) dans le domaine de l&#039;ultraviolet profond et du proche infrarouge, et son faible coefficient de dilatation thermique (5,5 \u00d7 10\u207b\u2077\/K) en fait le seul mat\u00e9riau capable de r\u00e9sister au bombardement laser des machines de lithographie EUV sans se d\u00e9former. Dans les machines de lithographie EUV d&#039;ASML, plus de 40 miroirs sont en silice vitreuse.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Dilatation thermique nulle et stabilit\u00e9 dimensionnelle in\u00e9gal\u00e9e<\/h3>\n\n\n\n<p>Les miroirs des t\u00e9lescopes spatiaux d&#039;un diam\u00e8tre de 8 m\u00e8tres doivent \u00eatre fabriqu\u00e9s en silice fondue, car sa faible dilatation thermique garantit que la d\u00e9formation du miroir reste de l&#039;ordre de quelques nanom\u00e8tres lorsqu&#039;il est soumis \u00e0 des variations de temp\u00e9rature de -100 \u00b0C \u00e0 +50 \u00b0C.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pertes di\u00e9lectriques ultra-faibles et mat\u00e9riau de remplissage du noyau pour substrats haute fr\u00e9quence 5G\/6G<\/h3>\n\n\n\n<p>Lorsque la fr\u00e9quence d\u00e9passe 28 GHz, les charges conventionnelles ne permettent plus de compenser les pertes di\u00e9lectriques. La poudre sph\u00e9rique de silice fondue (Dk = 3,5-3,8, Df &lt; 0,0005 \u00e0 10 GHz) est devenue le mat\u00e9riau de choix pour les stratifi\u00e9s cuivr\u00e9s haute fr\u00e9quence (CCL) et le conditionnement des antennes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">D\u00e9fis et tendances futures<\/h2>\n\n\n\n<p>Malgr\u00e9 ses nombreux avantages, la silice fondue pr\u00e9sente des d\u00e9fis. Son processus de production peut \u00eatre \u00e9nergivore, notamment lorsqu&#039;il requiert de grandes quantit\u00e9s de silice vitreuse. De plus, sa fragilit\u00e9 et la difficult\u00e9 de sa mise en \u0153uvre peuvent rendre son utilisation complexe dans certaines applications.<\/p>\n\n\n\n<p>\u00c0 l&#039;avenir, des secteurs comme la fabrication de semi-conducteurs, l&#039;optique et les \u00e9nergies renouvelables continueront de se d\u00e9velopper. Avec les progr\u00e8s de la fibre optique et de la technologie solaire, la demande en silice vitreuse devrait cro\u00eetre. La silice fondue jouera un r\u00f4le cl\u00e9 dans le d\u00e9veloppement de nouveaux composants et syst\u00e8mes haute performance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/quartz-grinding.epic-powder.com\/fr\/contact\/\">Conclusion<\/a><\/h2>\n\n\n\n<p>La silice fondue peut sembler n&#039;\u00eatre qu&#039;une simple \u00ab pierre transparente \u00bb. Pourtant, elle incarne le summum du savoir-faire humain dans des domaines tels que les hautes temp\u00e9ratures, le vide, la puret\u00e9 et la ma\u00eetrise des contraintes. Elle constitue la limite physique qui permet aux machines de lithographie de passer d&#039;une r\u00e9solution de 7 nm \u00e0 2 nm, puis \u00e0 1 nm. Elle sera \u00e9galement l&#039;\u00ab \u0153il \u00bb qui permettra aux futurs t\u00e9lescopes spatiaux d&#039;observer des galaxies situ\u00e9es \u00e0 des milliards d&#039;ann\u00e9es-lumi\u00e8re.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-default\"\/>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized is-style-rounded\"><img loading=\"lazy\" decoding=\"async\" width=\"721\" height=\"721\" src=\"https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/Emily-Chen.webp\" alt=\"Emily Chen\" class=\"wp-image-3549\" style=\"width:150px;height:150px\" srcset=\"https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/Emily-Chen.webp 721w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/Emily-Chen-300x300.webp 300w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/Emily-Chen-150x150.webp 150w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/Emily-Chen-12x12.webp 12w\" sizes=\"(max-width: 721px) 100vw, 721px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote has-text-align-center is-style-large is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u00ab Merci de votre lecture. J\u2019esp\u00e8re que cet article vous sera utile. N\u2019h\u00e9sitez pas \u00e0 laisser un commentaire ci-dessous. Pour toute question, vous pouvez \u00e9galement contacter le service client en ligne de Zelda. \u00bb<\/p>\n<cite>                                                                                                                                                                           \u2014 Publi\u00e9 par <a href=\"https:\/\/www.linkedin.com\/company\/76603359\/admin\/dashboard\/\">Emily Chen<\/a><\/cite><\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-default\"\/>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f16-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"16\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/fr\/wp-json\/wp\/v2\/posts\/3561#wpcf7-f16-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/fr\/wp-json\/wp\/v2\/posts\/3561#wpcf7-f16-o1\">\n<div style=\"display: none;\">\n<input type=\"hidden\" name=\"_wpcf7\" value=\"16\" \/>\n<input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.0.6\" \/>\n<input type=\"hidden\" name=\"_wpcf7_locale\" value=\"zh_CN\" \/>\n<input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f16-o1\" \/>\n<input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/>\n<input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/>\n<\/div>\n<div class=\"keen-form\">\n\t<div class=\"one-half\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Votre nom*\" value=\"\" type=\"text\" name=\"your-name\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half last\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Votre email*\" value=\"\" type=\"email\" name=\"your-email\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"pnone\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-tel\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Votre Pnone ou Whatsapp*\" value=\"\" type=\"tel\" name=\"pnone\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half last\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-subject\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" placeholder=\"Votre entreprise\" value=\"\" type=\"text\" name=\"your-subject\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div>\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-message\"><textarea cols=\"40\" rows=\"3\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea\" aria-invalid=\"false\" placeholder=\"Votre message\" name=\"your-message\"><\/textarea><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div>\n\t\t<p><input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"Soumettre\" \/>\n\t\t<\/p>\n\t<\/div>\n<\/div>\n<style>\n.keen-form div{margin-bottom:5px;}\n.keen-form div p{margin-bottom:0px !important;}\n.one-half,.one-third {\n position: relative;\n margin-right: 4%;\n float: left;\n z-index: 99;\n}\n.one-half { width: 48%; 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Il ne s&#039;agit pas simplement de sable de quartz ordinaire fondu et refroidi. C&#039;est la forme la plus pure et la plus stable de silice amorphe (SiO\u2082 &gt; 99,999%) pouvant \u00eatre produite industriellement. La silice fondue est presque [\u2026]<\/p>","protected":false},"author":1,"featured_media":3563,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3561","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ultrafine-air-classifier"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is Fused Silica? 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