{"id":131398,"date":"2024-03-25T10:58:16","date_gmt":"2024-03-25T02:58:16","guid":{"rendered":"https:\/\/www.alpapowder.com\/131398\/"},"modified":"2024-03-25T10:58:17","modified_gmt":"2024-03-25T02:58:17","slug":"yuksek-katma-degerli-uygulamalarda-alumina-tozunun-gereksinimleri-nelerdir","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/tr\/131398\/","title":{"rendered":"Y\u00fcksek katma de\u011ferli uygulamalarda al\u00fcmina tozunun gereksinimleri nelerdir?"},"content":{"rendered":"

\"\"<\/p>\n

Safir kristal b\u00fcy\u00fcmesi i\u00e7in al\u00fcmina y\u00fcksek yo\u011funluklu par\u00e7ac\u0131klar<\/p>\n

Asl\u0131nda safir bir al\u00fcmina tek kristaldir. \u00dcretiminde, ham madde olarak >%99,995 safl\u0131\u011fa sahip y\u00fcksek safl\u0131kta al\u00fcmina tozu (genellikle 5N al\u00fcmina olarak adland\u0131r\u0131l\u0131r) kullan\u0131l\u0131r. Bununla birlikte, mikronize al\u00fcmina par\u00e7ac\u0131klar\u0131n\u0131n k\u00fc\u00e7\u00fck paketleme yo\u011funlu\u011fundan dolay\u0131 genellikle 1g\/cm3’ten azd\u0131r, tek bir f\u0131r\u0131n\u0131n y\u00fckleme miktar\u0131 k\u00fc\u00e7\u00fckt\u00fcr ve bu da \u00fcretim verimlili\u011fini etkiler. Genel olarak al\u00fcmina, kristalleri b\u00fcy\u00fctmek i\u00e7in \u015farj edilmeden \u00f6nce uygun i\u015flem yoluyla y\u00fcksek yo\u011funluklu par\u00e7ac\u0131klar halinde yo\u011funla\u015ft\u0131r\u0131l\u0131r.<\/p>\n

 <\/p>\n

CMP parlatma a\u015f\u0131nd\u0131r\u0131c\u0131lar\u0131 i\u00e7in nano-al\u00fcmina a\u015f\u0131nd\u0131r\u0131c\u0131lar<\/p>\n

\u015eu anda yayg\u0131n olarak kullan\u0131lan CMP parlatma s\u0131v\u0131lar\u0131 aras\u0131nda silika sol parlatma s\u0131v\u0131s\u0131, seryum oksit parlatma s\u0131v\u0131s\u0131 ve al\u00fcmina parlatma s\u0131v\u0131s\u0131 yer al\u0131r. \u0130lk ikisinin a\u015f\u0131nd\u0131r\u0131c\u0131 tanecik sertli\u011fi k\u00fc\u00e7\u00fckt\u00fcr ve y\u00fcksek sertlikteki malzemelerin parlat\u0131lmas\u0131 i\u00e7in kullan\u0131lamaz. Bu nedenle Mohs sertli\u011fi 9 Al\u00fcminyum olan oksit parlatma s\u0131v\u0131s\u0131, safir kaportalar\u0131n ve d\u00fcz pencerelerin, kristalize cam y\u00fczeylerin, YAG polikristalin seramiklerin, optik lenslerin, ileri teknoloji \u00e7iplerin ve di\u011fer bile\u015fenlerin hassas cilalanmas\u0131nda yayg\u0131n olarak kullan\u0131l\u0131r.<\/p>\n

A\u015f\u0131nd\u0131r\u0131c\u0131 par\u00e7ac\u0131klar\u0131n boyutu, \u015fekli ve par\u00e7ac\u0131k boyutu da\u011f\u0131l\u0131m\u0131n\u0131n t\u00fcm\u00fc parlatma etkisini etkiler. Bu nedenle kimyasal mekanik parlatma a\u015f\u0131nd\u0131r\u0131c\u0131lar\u0131 olarak kullan\u0131lan al\u00fcmina par\u00e7ac\u0131klar\u0131 a\u015fa\u011f\u0131daki gereksinimleri kar\u015f\u0131lamal\u0131d\u0131r:<\/p>\n

1. Angstrom d\u00fczeyinde d\u00fczl\u00fc\u011fe ula\u015fmak i\u00e7in al\u00fcmina par\u00e7ac\u0131k boyutu en az 100 nm olmal\u0131 ve da\u011f\u0131l\u0131m dar olmal\u0131d\u0131r;<\/p>\n

2. Sertli\u011fi sa\u011flamak i\u00e7in tam \u03b1-faz\u0131 kristalizasyonu gereklidir. Bununla birlikte, yukar\u0131daki par\u00e7ac\u0131k boyutu gerekliliklerini hesaba katmak i\u00e7in, taneler b\u00fcy\u00fcrken tam \u03b1-faz\u0131 d\u00f6n\u00fc\u015f\u00fcm\u00fcn\u00fc \u00f6nlemek amac\u0131yla sinterlemenin daha d\u00fc\u015f\u00fck bir s\u0131cakl\u0131kta tamamlanmas\u0131 gerekir.<\/p>\n

3. Plakalar\u0131n parlat\u0131lmas\u0131 son derece y\u00fcksek safl\u0131k gereksinimlerine sahip oldu\u011fundan, Na, Ca ve manyetik iyonlar\u0131n ppm seviyesine kadar s\u0131k\u0131 bir \u015fekilde kontrol edilmesi gerekirken, radyoaktif elementler U ve Th’nin ppb seviyesinde kontrol edilmesi gerekir.<\/p>\n

4. Al2O3 i\u00e7eren cilalama s\u0131v\u0131lar\u0131 d\u00fc\u015f\u00fck se\u00e7icili\u011fe, zay\u0131f da\u011f\u0131l\u0131m stabilitesine ve kolay topaklanmaya sahiptir, bu da cilalama y\u00fczeyinde kolayca ciddi \u00e7iziklere neden olabilir. Genel olarak, iyi cilalanm\u0131\u015f bir y\u00fczey elde etmek amac\u0131yla cilalama s\u0131v\u0131s\u0131ndaki da\u011f\u0131l\u0131m\u0131n\u0131 iyile\u015ftirmek i\u00e7in modifikasyonlar gereklidir.<\/p>\n

Yar\u0131 iletken ambalajlama i\u00e7in d\u00fc\u015f\u00fck alfa emisyonlu k\u00fcresel al\u00fcmina<\/p>\n

Yar\u0131 iletken cihazlar\u0131n g\u00fcvenilirli\u011fini sa\u011flamak ve \u00fcr\u00fcnlerin temel rekabet g\u00fcc\u00fcn\u00fc artt\u0131rmak i\u00e7in genellikle ambalaj malzemesi olarak D\u00fc\u015f\u00fck \u03b1 \u0131\u015f\u0131nl\u0131 k\u00fcresel al\u00fcminan\u0131n kullan\u0131lmas\u0131 gerekir. Bir yandan haf\u0131za cihazlar\u0131n\u0131n \u03b1 \u0131\u015f\u0131nlar\u0131ndan kaynaklanan \u00e7al\u0131\u015fma ar\u0131zalar\u0131n\u0131 \u00f6nleyebilir, di\u011fer yandan y\u00fcksek \u0131s\u0131s\u0131ndan faydalanabilir. \u0130letkenlik, cihaz i\u00e7in iyi bir \u0131s\u0131 da\u011f\u0131tma performans\u0131 sa\u011flar.<\/p>\n

 <\/p>\n

Al\u00fcmina \u015feffaf seramik<\/p>\n

Her \u015feyden \u00f6nce, Al2O3 tozundaki safs\u0131zl\u0131klar\u0131n kolayca farkl\u0131 fazlar olu\u015fturmas\u0131n\u0131 ve \u0131\u015f\u0131\u011f\u0131n sa\u00e7\u0131lma merkezini art\u0131rarak, gelen y\u00f6nde yans\u0131t\u0131lan \u0131\u015f\u0131\u011f\u0131n yo\u011funlu\u011funun azalmas\u0131na ve dolay\u0131s\u0131yla \u00fcr\u00fcn\u00fcn \u015feffafl\u0131\u011f\u0131n\u0131n azalmas\u0131na neden olmas\u0131n\u0131 \u00f6nlemek i\u00e7in, Al2O3 tozunun safl\u0131\u011f\u0131n\u0131n %99,9’dan az olmamas\u0131 ve stabil yap\u0131ya sahip \u03b1-Al2O3 olmas\u0131 gerekmektedir. \u0130kinci olarak, kendi \u00e7ift k\u0131r\u0131lma etkisini zay\u0131flatmak i\u00e7in tane boyutunun da m\u00fcmk\u00fcn oldu\u011fu kadar k\u00fc\u00e7\u00fclt\u00fclmesi gerekir. Bu nedenle al\u00fcmina \u015feffaf seramiklerin haz\u0131rlanmas\u0131nda kullan\u0131lan tozun par\u00e7ac\u0131k boyutu da 0,3 \u03bcm’den k\u00fc\u00e7\u00fck olmal\u0131 ve y\u00fcksek sinterleme aktivitesine sahip olmal\u0131d\u0131r. Ayr\u0131ca, b\u00fcy\u00fck par\u00e7ac\u0131klar\u0131n topaklanmas\u0131n\u0131 ve orijinal k\u00fc\u00e7\u00fck par\u00e7ac\u0131klar\u0131n avantajlar\u0131n\u0131 kaybetmesini \u00f6nlemek i\u00e7in, tozun y\u00fcksek da\u011f\u0131l\u0131m gereksinimlerini de kar\u015f\u0131lamas\u0131 gerekir.<\/p>\n

 <\/p>\n

Y\u00fcksek frekansl\u0131 ileti\u015fim al\u00fcmina seramik substrat<\/p>\n

Y\u00fcksek safl\u0131kta al\u00fcmina seramikler, iyi dielektrik \u00f6zellikleri, sa\u011flam y\u00fck ta\u015f\u0131ma kapasiteleri ve \u00e7evresel erozyona kar\u015f\u0131 diren\u00e7leri nedeniyle \u015fu anda en ideal ve en yayg\u0131n olarak kullan\u0131lan ambalaj substrat malzemesidir. Ancak al\u00fcmina altl\u0131klar\u0131n ana performans\u0131 al\u00fcmina i\u00e7eri\u011finin artmas\u0131yla artar. Y\u00fcksek frekansl\u0131 ileti\u015fim ihtiya\u00e7lar\u0131n\u0131 kar\u015f\u0131lamak i\u00e7in al\u00fcmina seramik substratlar\u0131n safl\u0131\u011f\u0131n\u0131n %99,5’e, hatta %99,9’a ula\u015fmas\u0131 gerekmektedir.<\/p>\n","protected":false},"excerpt":{"rendered":"

Son derece yayg\u0131n olarak kullan\u0131lan inorganik bir malzeme olan metalurjik olmayan kalitedeki al\u00fcmina, 400’den fazla \u00e7e\u015fide b\u00f6l\u00fcnm\u00fc\u015ft\u00fcr.<\/p>\n","protected":false},"author":7,"featured_media":131364,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[851],"tags":[],"class_list":["post-131398","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-endustri-haberleri-tr"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts\/131398","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/comments?post=131398"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts\/131398\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/media\/131364"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/media?parent=131398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/categories?post=131398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/tags?post=131398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}