{"id":79,"date":"2026-10-25T21:16:01","date_gmt":"2026-10-25T13:16:01","guid":{"rendered":"https:\/\/aluminiumnitride.com\/?p=79"},"modified":"2026-10-25T21:16:01","modified_gmt":"2026-10-25T13:16:01","slug":"af-hverju-missa-alnitrid-umbudir-varmadreifingareiginleika-eftir-rakautsetningu","status":"publish","type":"post","link":"https:\/\/aluminiumnitride.com\/is\/af-hverju-missa-alnitrid-umbudir-varmadreifingareiginleika-eftir-rakautsetningu\/","title":{"rendered":"Af hverju missa \u00e1ln\u00edtr\u00ed\u00f0-umb\u00fa\u00f0ir varmalei\u00f0nileika eftir \u00fatsetningu fyrir raka"},"content":{"rendered":"<p dir=\"auto\"><strong>Af hverju missa \u00e1ln\u00edtr\u00ed\u00f0-umb\u00fa\u00f0ir varmalei\u00f0nileika eftir \u00fatsetningu fyrir raka<\/strong><\/p>\n<p dir=\"auto\">Eftir t\u00f3lf \u00e1ra vinnu me\u00f0 \u00e1ln\u00edtr\u00ed\u00f0grunnum \u00ed afl- og RF-umb\u00fa\u00f0um er eitt langvarandi vandam\u00e1l sm\u00e1m saman h\u00e6kkandi m\u00e6ld m\u00f3tst\u00f6\u00f0u gegn varma eftir a\u00f0 t\u00e6kin hafa veri\u00f0 geymd e\u00f0a notu\u00f0 \u00ed r\u00f6kum umhverfi. \u00deessi aukning er ekki sk\u00fdr\u00f0 einungis af \u00fereytu \u00ed l\u00f3\u00f0m\u00e1lmi e\u00f0a snertingu vi\u00f0 varmadreifara. Al\u00famin\u00edumn\u00edtr\u00ed\u00f0 bregst vi\u00f0 raka, og afur\u00f0ir \u00feess geta h\u00e6kka\u00f0 varmam\u00f3tst\u00f6\u00f0una vi\u00f0 frj\u00e1lsar yfirbor\u00f0sfl\u00f6tum og vi\u00f0 vi\u00f0m\u00f3t, jafnvel \u00feegar heildarlei\u00f0ni keramiksins er \u00e1fram h\u00e1.<\/p>\n<p dir=\"auto\"><!--more--><\/p>\n<p dir=\"auto\">\u00de\u00e9tt AlN er tilt\u00f6lulega st\u00f6\u00f0ugt, en eftirliggjandi opin por e\u00f0a \u00f3fullkomlega brennd kornam\u00f6rk leyfa vatnsgufu a\u00f0 berast a\u00f0 vi\u00f0brag\u00f0ssv\u00e6\u00f0um. Vi\u00f0brag\u00f0i\u00f0 myndar \u00e1lh\u00fddrox\u00ed\u00f0 og amm\u00f3n\u00edak; h\u00fddrox\u00ed\u00f0lagi\u00f0 er sl\u00e6mur varmalei\u00f0ari og getur einnig raska\u00f0 festingu m\u00e1lmhimnu \u00ed framhaldinu. \u00c1 dufti e\u00f0a l\u00e1g\u00fe\u00e9ttni efni er vi\u00f0brag\u00f0i\u00f0 hra\u00f0virkt. \u00c1 full\u00fe\u00e9ttum undirl\u00f6gum er \u00e1hrifin h\u00e6gari og sta\u00f0bundnari, en samt m\u00e6lanleg eftir vikur \u00ed \u00fatsetningu yfir 60% raka. \u00dear sem varmavi\u00f0n\u00e1m \u00edhlutapakkans er summa af varmalei\u00f0ni massans og vi\u00f0n\u00e1mi vi\u00f0m\u00f3ta, getur jafnvel \u00feunn vi\u00f0brag\u00f0shl\u00edf af nokkrum m\u00edkr\u00f3metrum b\u00e6tt vi\u00f0 nokkrum tugum gr\u00e1\u00f0u \u00e1 watt undir miklum varmastreymi.<\/p>\n<p dir=\"auto\">\u00cd st\u00fdr\u00f0u \u00fatsetningartilrauni voru 0,5 mm AlN-undirl\u00f6g me\u00f0 m\u00e6ldri heildarlei\u00f0ni upp \u00e1 185 W\/m\u00b7K m\u00e1lmv\u00f6rpu\u00f0 og sett saman \u00ed aflmod\u00fala. Helmingur eininganna var geymdur \u00ed 500 klukkustundir vi\u00f0 85 \u00b0C og 85% raka; hinn helmingurinn var geymdur vi\u00f0 sama hitastig \u00ed \u00feurru k\u00f6fnunarefni. Eftir \u00fatsetningu j\u00f3kst varmam\u00f3tsta\u00f0a milli tengis og hylkis vi\u00f0 40 W \u00e1lag um 0,18 \u00b0C\/W \u00e1 r\u00f6kum geymsluh\u00f3pnum en h\u00e9lt \u00f3breyttu gildi \u00e1 \u00feurrum geymsluh\u00f3pnum. \u00deversni\u00f0 s\u00fdndu \u00f3heftan yfirbor\u00f0slag um 2\u20134 \u00b5m \u00feykkt \u00e1 r\u00f6kum s\u00fdnum. Laser-flash-m\u00e6lingar \u00e1 samsvarandi \u00f3h\u00fa\u00f0u\u00f0um s\u00fdnum sta\u00f0festu a\u00f0 rafeiginleikar kjarna voru \u00f3breyttir, sem einangra\u00f0i vi\u00f0b\u00f3tarvi\u00f0n\u00e1mi\u00f0 vegna yfirbor\u00f0s-afur\u00f0a. Einingarnar sem h\u00f6f\u00f0u veri\u00f0 brenndar vi\u00f0 h\u00e6rri \u00fe\u00e9ttleika (opin poritet undir 0,2 %) s\u00fdndu um \u00fea\u00f0 bil helminga aukningar \u00ed vi\u00f0n\u00e1mi vi\u00f0 s\u00f6mu rakalegu \u00fatsetningu.<\/p>\n<p dir=\"auto\">Hagn\u00fdtar st\u00fdringar eru \u00fev\u00ed \u00fe\u00e9tting og yfirbor\u00f0sv\u00f6rn. Leifarg\u00f6tun ver\u00f0ur a\u00f0 vera n\u00e6gilega l\u00edtil til a\u00f0 raki komist ekki inn \u00ed kornin; \u00feunn, samfelld verndarh\u00fa\u00f0 e\u00f0a m\u00e1lmv\u00f6rpun sem hylur \u00f6ll frj\u00e1ls yfirbor\u00f0 takmarkar vi\u00f0br\u00f6g\u00f0 enn frekar. Fyrir n\u00e6mi \u00e1ln\u00edtr\u00ed\u00f0s gagnvart vatnsrofi eru vi\u00f0eigandi ferilsbreytur brennslu\u00fe\u00e9ttleiki, leifarg\u00f6tun og heilindi allra eftirfylgjandi h\u00fa\u00f0a. \u00c1rei\u00f0anleiki hitahringsbreytinga AlN-undirlags \u00ed r\u00f6kum a\u00f0st\u00e6\u00f0um er sta\u00f0festur me\u00f0 \u00fev\u00ed a\u00f0 m\u00e6la varmam\u00f3tst\u00f6\u00f0u pakkans fyrir og eftir hra\u00f0a\u00f0a rakasetningu fremur en me\u00f0 heildarlei\u00f0ni einni og s\u00e9r. \u00deegar varmam\u00f3tsta\u00f0a eykst eftir geymslu e\u00f0a \u00fatsetningu \u00e1 vettvangi \u00ed r\u00f6kum lofti er megin s\u00f6nnun auki\u00f0 vi\u00f0m\u00f3tst\u00edm\u00f3tsta\u00f0a \u00e1n breytinga \u00e1 heildarlei\u00f0ni. A\u00f0 n\u00e1 n\u00e6stum fullri \u00fe\u00e9ttleika og vernda lausa fleti, eins og s\u00fdnt er me\u00f0 minni aukningu \u00ed vi\u00f0n\u00e1mi \u00e1 \u00fe\u00e9ttari undirl\u00f6gum \u00ed 85 \u00b0C \/ 85 \u00b0C RH-pr\u00f3finu, takmarkar raki- og ni\u00f0urbrotsskemmdir og var\u00f0veitir varmalei\u00f0ni\u00e1lagsdreifingareiginleika \u00e1ln\u00edtr\u00ed\u00f0s.<\/p>","protected":false},"excerpt":{"rendered":"<p>Why Aluminium Nitride Packages Lose Heat-Spreading Ability After Humid Exposure After twelve years working with aluminium nitride substrates in power [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","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":"default","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":[2],"tags":[],"class_list":["post-79","post","type-post","status-publish","format-standard","hentry","category-products-related"],"_links":{"self":[{"href":"https:\/\/aluminiumnitride.com\/is\/wp-json\/wp\/v2\/posts\/79","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aluminiumnitride.com\/is\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aluminiumnitride.com\/is\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aluminiumnitride.com\/is\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aluminiumnitride.com\/is\/wp-json\/wp\/v2\/comments?post=79"}],"version-history":[{"count":1,"href":"https:\/\/aluminiumnitride.com\/is\/wp-json\/wp\/v2\/posts\/79\/revisions"}],"predecessor-version":[{"id":82,"href":"https:\/\/aluminiumnitride.com\/is\/wp-json\/wp\/v2\/posts\/79\/revisions\/82"}],"wp:attachment":[{"href":"https:\/\/aluminiumnitride.com\/is\/wp-json\/wp\/v2\/media?parent=79"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aluminiumnitride.com\/is\/wp-json\/wp\/v2\/categories?post=79"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aluminiumnitride.com\/is\/wp-json\/wp\/v2\/tags?post=79"}],"curies":[{"name":"vp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}