Oxid hlinit\u00fd (s chemick\u00fdm vzorcom Al2O3) je mimoriadne v\u0161estrann\u00fd priemyseln\u00fd materi\u00e1l, ktor\u00fd sa pou\u017e\u00edva v r\u00f4znych aplik\u00e1ci\u00e1ch, od keramiky a abraz\u00edv a\u017e po nosi\u010de katalyz\u00e1torov. N\u00e1\u0161 vysoko\u010dist\u00fd oxid hlinit\u00fd v pr\u00e1\u0161ku je ide\u00e1lny pre \u0161pi\u010dkov\u00e9 polovodi\u010dov\u00e9 zariadenia, ktor\u00e9 vy\u017eaduj\u00fa v\u00fdnimo\u010dn\u00fa \u010distotu a v\u00fdkonnos\u0165 leptania, ako aj pre in\u00e9 kritick\u00e9 aplik\u00e1cie vy\u017eaduj\u00face n\u00edzku \u00farove\u0148 zne\u010distenia a vynikaj\u00facu odolnos\u0165 proti opotrebovaniu.<\/p>\n
Oxid hlinit\u00fd je neoddelite\u013enou s\u00fa\u010das\u0165ou materi\u00e1lov pou\u017e\u00edvan\u00fdch v mnoh\u00fdch vysoko v\u00fdkonn\u00fdch aplik\u00e1ci\u00e1ch, av\u0161ak v\u00fdkonnos\u0165 keramick\u00fdch v\u00fdrobkov z oxidu hlinit\u00e9ho z\u00e1vis\u00ed od ich \u010distoty. Pou\u017eitie oxidu hlinit\u00e9ho vysokej \u010distoty (HPA) zaru\u010duje, \u017ee keramika obsahuje minimum ne\u010dist\u00f4t\/pr\u00edmes\u00ed pre lep\u0161\u00ed tepeln\u00fd mana\u017ement a lep\u0161ie RF aplik\u00e1cie.<\/p>\n
HPA sa vyr\u00e1ba rozp\u00fa\u0161\u0165an\u00edm a \u010disten\u00edm hydroxidu hlinit\u00e9ho ako suroviny, po ktorom nasleduje kalcin\u00e1cia na dosiahnutie vy\u0161\u0161ej \u00farovne \u010distoty. Tento proces sa opakuje, k\u00fdm sa nedosiahne po\u017eadovan\u00e1 \u00farove\u0148 \u010distoty, \u010do vedie k z\u00edskaniu pr\u00e1\u0161kov\u00e9ho oxidu hlinit\u00e9ho s mnoh\u00fdmi \u017eelan\u00fdmi vlastnos\u0165ami, ako je chemick\u00e1 stabilita, vysok\u00fd bod topenia, mechanick\u00e1 pevnos\u0165 a tvrdos\u0165.<\/p>\n
Sf\u00e9rick\u00e9 pr\u00e1\u0161ky oxidu hlinit\u00e9ho maj\u00fa v\u00fdnimo\u010dn\u00fa tepeln\u00fa vodivos\u0165, \u010do z nich rob\u00ed ide\u00e1lny materi\u00e1l na pou\u017eitie ako vodiv\u00e9 podlo\u017eky a listy v elektronick\u00fdch zariadeniach. Ich vynikaj\u00faca schopnos\u0165 kontaktu s teplotou a rozptylu pom\u00e1ha predch\u00e1dza\u0165 prehriatiu, ako aj poruch\u00e1m zariaden\u00ed sp\u00f4soben\u00fdm prehriat\u00edm.<\/p>\n
Pr\u00e1\u0161ky oxidu hlinit\u00e9ho sa vyzna\u010duj\u00fa konzistentnou distrib\u00faciou ve\u013ekosti \u010dast\u00edc, v\u010faka \u010domu s\u00fa vhodn\u00e9 na r\u00f4zne le\u0161tiace aplik\u00e1cie a pom\u00e1haj\u00fa kontrolova\u0165 r\u00fdchlos\u0165 le\u0161tenia na rovnomern\u00e9 odstr\u00e1nenie povrchu. V\u0161estrannos\u0165 oxidu hlinit\u00e9ho z neho tie\u017e rob\u00ed nevyhnutn\u00fd komponent v r\u00f4znych vysoko v\u00fdkonn\u00fdch keramick\u00fdch aplik\u00e1ci\u00e1ch, ako s\u00fa filtra\u010dn\u00e9 syst\u00e9my a adit\u00edvna v\u00fdroba.<\/p>\n
Pr\u00e1\u0161ok oxidu hlinit\u00e9ho sa m\u00f4\u017ee pou\u017ei\u0165 aj na pokrytie kovov\u00fdch substr\u00e1tov a zabezpe\u010di\u0165 vynikaj\u00faci odvod tepla v elektronick\u00fdch moduloch a zariadeniach, ako s\u00fa elektronick\u00e9 moduly a zariadenia. Oxid hlinit\u00fd sa \u010dasto pou\u017e\u00edva ako vynikaj\u00faci tepelne vodiv\u00fd povlakov\u00fd materi\u00e1l pre dosky s plo\u0161n\u00fdmi spojmi a obaly integrovan\u00fdch obvodov v\u010faka svojej vysokej tepelnej vodivosti, ako aj n\u00edzkemu bodu topenia a tlaku p\u00e1r - \u010do znamen\u00e1, \u017ee znesie vy\u0161\u0161ie prev\u00e1dzkov\u00e9 teploty, ktor\u00e9 tieto povlaky vy\u017eaduj\u00fa.<\/p>\n
Rovnomern\u00e1 ve\u013ekos\u0165 abraz\u00edvnych \u010dast\u00edc oxidu hlinit\u00e9ho umo\u017e\u0148uje riaden\u00fa r\u00fdchlos\u0165 le\u0161tenia a hladk\u00e9 povrchy a z\u00e1rove\u0148 je ide\u00e1lnym materi\u00e1lom pre pokro\u010dil\u00fa technick\u00fa keramiku pou\u017e\u00edvan\u00fa v priemyseln\u00fdch odvetviach, ako je leteck\u00fd a automobilov\u00fd priemysel a spracovanie spotrebn\u00fdch v\u00fdrobkov. Medzi aplik\u00e1cie oxidu hlinit\u00e9ho ATC patr\u00ed odihlovanie, le\u0161tenie odstra\u0148ovanie vodn\u00e9ho kame\u0148a, \u010distenie foriem, pred\u00faprava kovov pieskovan\u00edm.<\/p>\n
Cie\u013eom tejto \u0161t\u00fadie bolo zv\u00fd\u0161i\u0165 odolnos\u0165 proti opotrebovaniu v keramike z oxidu hlinit\u00e9ho pou\u017eit\u00edm stopov\u00fdch mno\u017estiev Gd2O3. Pred meran\u00edm r\u00fdchlosti opotrebovania pod\u013ea \u010d\u00ednskych noriem sa pripravil pr\u00e1\u0161ok oxidu hlinit\u00e9ho obsahuj\u00faci r\u00f4zne percent\u00e1 Gd2O3 a potom sa vyhodnotil pod\u013ea \u010d\u00ednskej priemyselnej normy z h\u013eadiska objemovej hustoty, distrib\u00facie ve\u013ekosti \u010dast\u00edc, morfol\u00f3gie a s\u00fadr\u017enosti na hranici z\u0155n. V\u00fdsledky uk\u00e1zali, \u017ee pridanie Gd2O3 malo pozit\u00edvny vplyv na f\u00e1zov\u00e9 prechody, z\u00fa\u017eenie hran\u00edc z\u0155n a zv\u00fd\u0161enie v\u00e4zbov\u00fdch s\u00edl medzi susedn\u00fdmi zrnami, \u010do viedlo k v\u00fdrazne lep\u0161ej odolnosti korundovej keramiky proti opotrebovaniu v porovnan\u00ed s predch\u00e1dzaj\u00facimi kon\u0161trukciami; miera opotrebovania sa zvy\u0161ovala s parabolick\u00fdm n\u00e1rastom obsahu Gd2O3 s ka\u017ed\u00fdm \u010fal\u0161\u00edm pridan\u00fdm percentom.<\/p>","protected":false},"excerpt":{"rendered":"
Unleash Ultimate Purity and Performance With Alumina Powder Alumina (with the chemical formula Al2O3) is an extremely versatile industrial material, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"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":"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-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-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-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-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-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-gradient":""}},"footnotes":""},"categories":[11],"tags":[],"class_list":["post-73","post","type-post","status-publish","format-standard","hentry","category-product"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/aluminapowder.net\/sk\/wp-json\/wp\/v2\/posts\/73","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aluminapowder.net\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aluminapowder.net\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aluminapowder.net\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aluminapowder.net\/sk\/wp-json\/wp\/v2\/comments?post=73"}],"version-history":[{"count":1,"href":"https:\/\/aluminapowder.net\/sk\/wp-json\/wp\/v2\/posts\/73\/revisions"}],"predecessor-version":[{"id":74,"href":"https:\/\/aluminapowder.net\/sk\/wp-json\/wp\/v2\/posts\/73\/revisions\/74"}],"wp:attachment":[{"href":"https:\/\/aluminapowder.net\/sk\/wp-json\/wp\/v2\/media?parent=73"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aluminapowder.net\/sk\/wp-json\/wp\/v2\/categories?post=73"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aluminapowder.net\/sk\/wp-json\/wp\/v2\/tags?post=73"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}