{"id":8644,"date":"2026-02-06T14:05:51","date_gmt":"2026-02-06T06:05:51","guid":{"rendered":"https:\/\/www.sic-wafers.com\/?p=8644"},"modified":"2026-02-06T14:05:55","modified_gmt":"2026-02-06T06:05:55","slug":"high-temperature-dic-sapphire-vs-quartz-as-window-materials","status":"publish","type":"post","link":"https:\/\/www.sic-wafers.com\/sv\/high-temperature-dic-sapphire-vs-quartz-as-window-materials\/","title":{"rendered":"DIC f\u00f6r h\u00f6ga temperaturer: safir vs. kvarts som f\u00f6nstermaterial"},"content":{"rendered":"<div style=\"margin-top: 0px; margin-bottom: 0px;\" class=\"sharethis-inline-share-buttons\" ><\/div>\n<p>Digital bildkorrelation (DIC) har blivit ett oumb\u00e4rligt verktyg f\u00f6r ber\u00f6ringsfria m\u00e4tningar av t\u00f6jning och deformation inom materialforskningen. I h\u00f6gtemperaturtill\u00e4mpningar \u00e4r valet av l\u00e4mpligt f\u00f6nstermaterial avg\u00f6rande, eftersom det direkt p\u00e5verkar den optiska klarheten, den termiska stabiliteten och den experimentella noggrannheten. Tv\u00e5 vanliga val f\u00f6r h\u00f6gtemperaturf\u00f6nster \u00e4r safir (enkristallin Al\u2082O\u2083) och kvarts (SiO\u2082), som alla har sina egna f\u00f6rdelar och begr\u00e4nsningar.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img data-dominant-color=\"bbcbdc\" data-has-transparency=\"false\" style=\"--dominant-color: #bbcbdc;\" fetchpriority=\"high\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1.webp\" alt=\"\" class=\"wp-image-8013 not-transparent\" srcset=\"https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1.webp 600w, https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1-300x300.webp 300w, https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1-150x150.webp 150w, https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1-100x100.webp 100w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">1. Termisk stabilitet<\/h4>\n\n\n\n<p>DIC-experiment med h\u00f6g temperatur \u00f6verstiger ofta 600-1000 \u00b0C, vilket st\u00e4ller stora termiska krav p\u00e5 f\u00f6nstermaterialet.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sapphire:<\/strong> Har en extremt h\u00f6g sm\u00e4ltpunkt (~2030 \u00b0C) och utm\u00e4rkt motst\u00e5ndskraft mot termisk chock. Dess v\u00e4rmeledningsf\u00f6rm\u00e5ga (~35 W\/m-K vid rumstemperatur) \u00e4r \u00f6verl\u00e4gsen kvarts, vilket m\u00f6jligg\u00f6r snabb v\u00e4rmeavledning och minskade lokala v\u00e4rmegradienter som kan f\u00f6rvr\u00e4nga optiska m\u00e4tningar.<\/li>\n\n\n\n<li><strong>Quartz:<\/strong> Sm\u00e4lt kiseldioxid har en l\u00e4gre mjukningspunkt (~1600 \u00b0C) och s\u00e4mre v\u00e4rmeledningsf\u00f6rm\u00e5ga (~1,4 W\/m-K). \u00c4ven om kvartsf\u00f6nster \u00e4r l\u00e4mpliga f\u00f6r m\u00e5ttliga h\u00f6gtemperaturexperiment kan de utveckla mikrosprickor eller deformation under snabba temperaturf\u00f6r\u00e4ndringar, vilket kan \u00e4ventyra DIC-noggrannheten.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">2. Mekanisk h\u00e5llfasthet och h\u00e5llbarhet<\/h4>\n\n\n\n<p>F\u00f6nstermaterial m\u00e5ste motst\u00e5 mekanisk p\u00e5frestning fr\u00e5n fixturer, termisk expansion och tillf\u00e4llig kontakt.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sapphire:<\/strong> Har en Mohs-h\u00e5rdhet p\u00e5 9, vilket g\u00f6r det extremt rep- och n\u00f6tningsbest\u00e4ndigt. Dess brottseghet \u00e4r h\u00f6gre \u00e4n kvarts, vilket minskar risken f\u00f6r katastrofala fel i tuffa milj\u00f6er.<\/li>\n\n\n\n<li><strong>Quartz:<\/strong> Kvarts, som \u00e4r mjukare (Mohs ~7) och spr\u00f6dare, \u00e4r ben\u00e4gen att flisas eller spricka under mekanisk p\u00e5frestning, s\u00e4rskilt vid h\u00f6ga temperaturer.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">3. Optisk genomskinlighet och m\u00e4tnoggrannhet<\/h4>\n\n\n\n<p>DIC \u00e4r beroende av en tydlig bild genom f\u00f6nstret; all absorption, spridning eller dubbelbrytning kan leda till m\u00e4tfel.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sapphire:<\/strong> Transparent fr\u00e5n ultraviolett (~200 nm) till infrar\u00f6tt (~5 \u00b5m), med minimal optisk distorsion. Det h\u00f6ga brytningsindexet (n \u2248 1,76) kr\u00e4ver noggranna antireflexbel\u00e4ggningar f\u00f6r avbildning med h\u00f6g precision, men ger i allm\u00e4nhet utm\u00e4rkt ljusgenomsl\u00e4pp.<\/li>\n\n\n\n<li><strong>Quartz:<\/strong> Transparent fr\u00e5n UV (~180 nm) till n\u00e4ra IR (~3,5 \u00b5m), med mycket l\u00e5g inneboende dubbelbrytning. Termiska gradienter vid h\u00f6ga temperaturer kan dock ge upphov till lokala brytningsindexvariationer, vilket minskar m\u00e4tnoggrannheten n\u00e5got j\u00e4mf\u00f6rt med safir.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">4. Kemisk resistens<\/h4>\n\n\n\n<p>H\u00f6gtemperaturexperiment kan involvera reaktiva atmosf\u00e4rer som syre, argon eller till och med sm\u00e4lta salter.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sapphire:<\/strong> Kemiskt inert och motst\u00e5ndskraftig mot oxidation, syror och de flesta reaktiva gaser vid f\u00f6rh\u00f6jda temperaturer.<\/li>\n\n\n\n<li><strong>Quartz:<\/strong> Generellt kemiskt stabil, men mindre motst\u00e5ndskraftig mot vissa alkali\u00e5ngor och mer ben\u00e4gen att devitrifieras vid l\u00e5ngvarigt h\u00f6ga temperaturer.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">5. \u00d6verv\u00e4ganden om kostnader och tillverkning<\/h4>\n\n\n\n<p>Prestandan \u00e4r avg\u00f6rande, men \u00e4ven praktiska faktorer som kostnad, tillg\u00e4nglighet och f\u00f6nsterstorlek spelar roll.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sapphire:<\/strong> Dyrare och begr\u00e4nsad i storlek f\u00f6r optiska f\u00f6nster av h\u00f6g kvalitet. Tillverkning och polering kr\u00e4ver specialiserad teknik.<\/li>\n\n\n\n<li><strong>Quartz:<\/strong> Mer prisv\u00e4rd, l\u00e4ttare att tillverka i st\u00f6rre storlekar och allm\u00e4nt tillg\u00e4nglig, vilket g\u00f6r den l\u00e4mplig f\u00f6r mindre kr\u00e4vande DIC-applikationer f\u00f6r h\u00f6ga temperaturer.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Slutsats<\/h4>\n\n\n\n<p>F\u00f6r DIC-experiment vid h\u00f6ga temperaturer \u00f6ver ~800 \u00b0C eller som kr\u00e4ver h\u00f6g mekanisk och termisk robusthet, <a href=\"https:\/\/www.sic-wafers.com\/sv\/product-category\/sapphireal%e2%82%82o%e2%82%83\/sapphire-windows\/\">safirf\u00f6nster<\/a> \u00e4r det \u00f6verl\u00e4gsna valet p\u00e5 grund av sin exceptionella termiska stabilitet, mekaniska styrka och optiska klarhet. Kvarts \u00e4r fortfarande ett l\u00f6nsamt och kostnadseffektivt alternativ f\u00f6r m\u00e5ttliga temperaturer och mindre kr\u00e4vande experimentella uppst\u00e4llningar. Valet av l\u00e4mpligt f\u00f6nstermaterial beror i slut\u00e4ndan p\u00e5 det specifika temperaturomr\u00e5det, den mekaniska p\u00e5frestningen, den kemiska milj\u00f6n och budgetbegr\u00e4nsningarna f\u00f6r DIC-applikationen.<\/p>","protected":false},"excerpt":{"rendered":"<p>Digital Image Correlation (DIC) has become an indispensable tool for non-contact strain and deformation measurements in materials research. In high-temperature applications, selecting the appropriate window material is critical, as it directly impacts optical clarity, thermal stability, and experimental accuracy. Two common choices for high-temperature windows are sapphire (single-crystal Al\u2082O\u2083) and quartz (SiO\u2082), each with distinct [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":8013,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","footnotes":""},"categories":[12,27],"tags":[1432,1853,1848,1847,1851,1850,1849,1852,1211],"class_list":["post-8644","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-companynews","tag-chemical-resistance","tag-digital-image-correlation","tag-high-temperature-dic","tag-high-temperature-measurement","tag-mechanical-strength","tag-optical-window","tag-quartz-window","tag-sapphire-window","tag-thermal-stability"],"acf":[],"uagb_featured_image_src":{"full":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1.webp",600,600,false],"thumbnail":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1-150x150.webp",150,150,true],"medium":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1-300x300.webp",300,300,true],"medium_large":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1.webp",600,600,false],"large":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1.webp",600,600,false],"1536x1536":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1.webp",600,600,false],"2048x2048":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1.webp",600,600,false],"trp-custom-language-flag":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1.webp",12,12,false],"woocommerce_thumbnail":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1-300x300.webp",300,300,true],"woocommerce_single":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1.webp",600,600,false],"woocommerce_gallery_thumbnail":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/sapphire-windows-1-100x100.webp",100,100,true]},"uagb_author_info":{"display_name":"lydia","author_link":"https:\/\/www.sic-wafers.com\/sv\/author\/lydia\/"},"uagb_comment_info":2,"uagb_excerpt":"Digital Image Correlation (DIC) has become an indispensable tool for non-contact strain and deformation measurements in materials research. In high-temperature applications, selecting the appropriate window material is critical, as it directly impacts optical clarity, thermal stability, and experimental accuracy. Two common choices for high-temperature windows are sapphire (single-crystal Al\u2082O\u2083) and quartz (SiO\u2082), each with distinct&hellip;","_links":{"self":[{"href":"https:\/\/www.sic-wafers.com\/sv\/wp-json\/wp\/v2\/posts\/8644","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sic-wafers.com\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sic-wafers.com\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sic-wafers.com\/sv\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sic-wafers.com\/sv\/wp-json\/wp\/v2\/comments?post=8644"}],"version-history":[{"count":1,"href":"https:\/\/www.sic-wafers.com\/sv\/wp-json\/wp\/v2\/posts\/8644\/revisions"}],"predecessor-version":[{"id":8645,"href":"https:\/\/www.sic-wafers.com\/sv\/wp-json\/wp\/v2\/posts\/8644\/revisions\/8645"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sic-wafers.com\/sv\/wp-json\/wp\/v2\/media\/8013"}],"wp:attachment":[{"href":"https:\/\/www.sic-wafers.com\/sv\/wp-json\/wp\/v2\/media?parent=8644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sic-wafers.com\/sv\/wp-json\/wp\/v2\/categories?post=8644"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sic-wafers.com\/sv\/wp-json\/wp\/v2\/tags?post=8644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}