Al\u00fcmina tozu, nanokompozitlerde vazge\u00e7ilmez bir \u00e7ekirdek ve dolgu malzemesidir ve ayr\u0131ca end\u00fcstriyel kataliz\u00f6rler i\u00e7in \u00f6nemli bir destek bile\u015fi\u011fi olarak hizmet eder. G\u00f6zenekli karbon siyah\u0131, kal\u0131n k\u0131vam\u0131 ve safs\u0131zl\u0131klar\u0131 emme kabiliyeti nedeniyle kozmetik \u00fcr\u00fcnlerde ayr\u0131lmaz bir bile\u015fen iken, de\u011ferli ta\u015flar\u0131 parlatmak i\u00e7in kullan\u0131lan bir a\u015f\u0131nd\u0131r\u0131c\u0131 olan korindonun temelini olu\u015fturur.<\/p>\n
Al\u00fcmina tozu, suyu uzakla\u015ft\u0131rmak ve al\u00fcminyum oksit \u00fcretmek i\u00e7in al\u00fcminyum hidroksitin y\u00fcksek s\u0131cakl\u0131klarda kalsine edilmesiyle olu\u015fturulur, daha sonra farkl\u0131 \u00f6zelliklere ve uygulamalara sahip farkl\u0131 formlar \u00fcretmek i\u00e7in daha fazla i\u015flenir.<\/p>\n
S\u0131n\u0131f\u0131na ba\u011fl\u0131 olarak, Al\u00fcmina doku olarak inceden kabaya kadar de\u011fi\u015febilir ve \u00e7e\u015fitli kimyasal safl\u0131k ve y\u00fczey alan\u0131 seviyelerine sahip olabilir. \u00c7ok d\u00fc\u015f\u00fck safs\u0131zl\u0131k seviyelerine sahip kaliteler y\u00fcksek safl\u0131kta Al\u00fcmina (HPA) olarak bilinirken, son derece geni\u015f y\u00fczey alanlar\u0131na sahip olanlar daha d\u00fc\u015f\u00fck safl\u0131k derecelerine sahip Gran\u00fcler Al\u00fcmina (GA) olarak bilinir.<\/p>\n
\u0130nce al\u00fcmina tozlar\u0131 parlatma bile\u015fiklerinde ve kataliz\u00f6r destek malzemelerinde bulunabildi\u011fi gibi plastik ve kau\u00e7uk \u00fcretim s\u00fcre\u00e7lerinde dolgu malzemesi olarak da kullan\u0131lmaktad\u0131r. Ayr\u0131ca, y\u00fcksek safl\u0131kta al\u00fcmina, elektronik cihazlar i\u00e7in safir alt tabakalar\u0131n \u00fcretiminde ve y\u00fcksek s\u0131cakl\u0131kta lehimleme tertibatlar\u0131nda kullan\u0131lmak \u00fczere metal kaplamada kullan\u0131l\u0131r - k\u0131sacas\u0131 birden fazla kullan\u0131ma hizmet eder ve m\u00fckemmel bir elektrik yal\u0131tkan\u0131 g\u00f6revi g\u00f6r\u00fcr.<\/p>\n
Al\u00fcmina ayr\u0131ca end\u00fcstriyel \u00fcr\u00fcnler ve makineler \u00fczerinde koruyucu bir kaplama olarak kullan\u0131labilir ve a\u015f\u0131nmaya kar\u015f\u0131 korunmalar\u0131na yard\u0131mc\u0131 olur. \u00dcst\u00fcn sertli\u011fi ve mukavemeti nedeniyle, al\u00fcmina ideal seramik izolat\u00f6rler ve substratlar olu\u015fturur, ayr\u0131ca termal kapasitesi ve y\u00fcksek erime noktas\u0131, petrokimya i\u015fleme, \u00e7imento \u00fcretimi, at\u0131k yakma ve demir ve \u00e7elik \u00fcretimi gibi uygulamalarda kullan\u0131lan refrakter \u00fcr\u00fcnlerin \u00fcretiminde yararl\u0131 olmas\u0131n\u0131 sa\u011flar. Al\u00fcmina, mukavemeti art\u0131rmak i\u00e7in camla bile kar\u0131\u015ft\u0131r\u0131labilir.<\/p>\n
Al\u00fcmina tozu seramik, metalurji, elektronik ve kataliz\u00f6r \u00fcretimi gibi \u00e7ok \u00e7e\u015fitli end\u00fcstriyel \u00fcr\u00fcnlerin imalat\u0131nda kullan\u0131lmaktad\u0131r. Termal, kimyasal ve mekanik \u00f6zellikleri nedeniyle al\u00fcmina, refrakterler, ta\u015flama ta\u015flar\u0131 ve a\u015f\u0131nmaya dayan\u0131kl\u0131 uygulamalar i\u00e7in ideal bir malzemedir ve d\u00fc\u015f\u00fck s\u00fcrt\u00fcnme seviyeleri onu biyouyumluluk gereksinimleri olan nanokompozitler i\u00e7in uygun hale getirir.<\/p>\n
Y\u00fcksek erime noktas\u0131 ve termal direnci nedeniyle al\u00fcmina, elektrikli cihazlar\u0131n ve yar\u0131 iletkenlerin \u00fcretiminde yayg\u0131n olarak kullan\u0131lmaktad\u0131r. Ayr\u0131ca, \u0131s\u0131 al\u0131c\u0131lar\u0131 onu elektronik bile\u015fenlerde \u00fcretilen \u0131s\u0131y\u0131 da\u011f\u0131tmak i\u00e7in temel bir bile\u015fen olarak kullan\u0131r ve d\u00fc\u015f\u00fck s\u00fcrt\u00fcnme ve yal\u0131t\u0131m \u00f6zellikleri onu a\u015f\u0131nma \u00f6nleyici kaplamalar olu\u015fturmak i\u00e7in m\u00fckemmel bir malzeme se\u00e7imi haline getirir.<\/p>\n
Kalsine al\u00fcmina, petrokimya end\u00fcstrisinde hidrolik \u00e7atlatma (fracking) s\u0131ras\u0131nda \u00e7atlaklar\u0131 a\u00e7\u0131k tutmak ve b\u00f6ylece hidrokarbonlar\u0131n yeralt\u0131 yataklar\u0131ndan \u00e7\u0131kar\u0131lmas\u0131na yard\u0131mc\u0131 olmak i\u00e7in hidrolik \u00e7atlatma operasyonlar\u0131 s\u0131ras\u0131nda kullan\u0131lan seramik proppantlar\u0131n yap\u0131m\u0131nda yayg\u0131n olarak kullan\u0131lmaktad\u0131r.<\/p>\n
Saf (99% al\u00fcmina) al\u00fcmina, a\u015f\u0131nmaya kar\u015f\u0131 diren\u00e7li olmas\u0131 gereken makine ve ekipman par\u00e7alar\u0131n\u0131n \u00fcretiminde yayg\u0131n olarak kullan\u0131l\u0131rken, ayn\u0131 zamanda g\u00fcr\u00fclt\u00fc ve radyasyona kar\u015f\u0131 etkili bir \u015fekilde yal\u0131t\u0131l\u0131r. Bu malzemenin yayg\u0131n uygulamalar\u0131 aras\u0131nda \u015faftlar, rulmanlar, bask\u0131 pullar\u0131 ve kimyasallarla \u00e7al\u0131\u015fan pompalardaki pistonlar\u0131n yan\u0131 s\u0131ra lazer bile\u015fenleri, elektro optik cihazlar, ak\u0131\u015f \u00f6l\u00e7er sens\u00f6rleri ve X-ray ekipman\u0131 yer al\u0131r.<\/p>\n
Al\u00fcmina, a\u011f\u0131r y\u00fckleri ta\u015f\u0131mak i\u00e7in \u00f6zel olarak donat\u0131lm\u0131\u015f kamyonlar veya r\u00f6morklar, demiryolu, kargo gemisi veya al\u00fcminyum gibi kuru d\u00f6kme mallar\u0131 ta\u015f\u0131mak i\u00e7in tasarlanm\u0131\u015f di\u011fer ara\u00e7larla ta\u015f\u0131nabilir.<\/p>\n
Al\u00fcmina, a\u015f\u0131nd\u0131r\u0131c\u0131lar, sinterlenmi\u015f \u00fcr\u00fcnler, plazma p\u00fcsk\u00fcrtme malzemeleri ve dolgu maddeleri gibi bir\u00e7ok uygulamada vazge\u00e7ilmez bir malzemedir. Ayr\u0131ca, al\u00fcmina tek kristaller, kataliz\u00f6rler i\u00e7in destekler ve floresan maddeler olarak da bulunabilir. Al\u00fcminan\u0131n baz\u0131 kullan\u0131mlar\u0131 y\u00fcksek safl\u0131k ve dar partik\u00fcl boyutu da\u011f\u0131l\u0131m\u0131 gerektirirken, di\u011ferleri belirli \u015fekiller gerektirir; \u00f6rne\u011fin k\u00f6m\u00fcrle \u00e7al\u0131\u015fan elektrik santrallerinde kullan\u0131lan seramik filtreler 100 mikron \u00e7ap\u0131nda al\u00fcmina tozu i\u00e7ermelidir Baca gaz\u0131 kanallar\u0131 i\u00e7in filtreler, optimum kullan\u0131m i\u00e7in \u00e7ap\u0131 100 mikrona e\u015fit olan silindirik \u015fekilli toz gerektirir.<\/p>\n
Al\u00fcminan\u0131n \u00e7o\u011fu, hammadde olarak bir toprak minerali olan boksitin kullan\u0131ld\u0131\u011f\u0131 Bayer i\u015flemiyle \u00fcretilir. Topraktan \u00e7\u0131kar\u0131lan ve sulu hidroksit \u00e7\u00f6zeltileriyle \u00e7\u00f6z\u00fcnd\u00fcr\u00fclmek ve filtrelenmek \u00fczere al\u00fcmina tesislerine ta\u015f\u0131nan al\u00fcminan\u0131n bir k\u0131sm\u0131 daha sonra al\u00fcminyum metaline elektroliz edildi\u011fi al\u00fcminyum eritme tesislerine g\u00f6nderilir; kalan par\u00e7alar ise izolat\u00f6rler, refrakterler ve a\u015f\u0131nd\u0131r\u0131c\u0131lar gibi \u00e7e\u015fitli seramik \u00fcr\u00fcnlerin yan\u0131 s\u0131ra kemik implantlar\u0131, kemik\/di\u015f implantlar\u0131, laboratuvar gere\u00e7leri ve laboratuvar f\u0131r\u0131n\u0131 refrakter kaplamalar\u0131 i\u00e7in kalsine edilir.<\/p>\n
Al\u00fcmina bir emtiad\u0131r, yani fiyat\u0131 arz ve talebe g\u00f6re g\u00fcnl\u00fck olarak dalgalan\u0131r. \u00dcreticiler, \u00fcretim maliyetlerini buna g\u00f6re ayarlamak i\u00e7in bu fiyat\u0131 yak\u0131ndan takip eder, genellikle kamyon y\u00fck\u00fc veya vagonla d\u00f6kme olarak g\u00f6nderir; nakliye i\u00e7in gereken mesafe ve h\u0131za ba\u011fl\u0131 olarak gemi ile de teslim edilebilir.<\/p>\n
Al\u00fcmina en yayg\u0131n kullan\u0131lan m\u00fchendislik seramiklerinden biridir. \u00d6zellikleri onu sert, kimyasal olarak inert ve y\u00fcksek s\u0131cakl\u0131klarda kararl\u0131 k\u0131lar; al\u00fcmina tozunu \u00e7e\u015fitli uygulamalar i\u00e7in a\u015f\u0131nmaya dayan\u0131kl\u0131 malzemeler ve refrakter \u00fcr\u00fcnler yapmak i\u00e7in ideal hale getirir. Al\u00fcmina ayr\u0131ca yal\u0131t\u0131m ve elektriksel \u00f6zellikler sergiler; y\u00fcksek safl\u0131k dereceleri, bu piller aras\u0131nda k\u0131sa devreyi \u00f6nlemek i\u00e7in anotlar ve katotlar aras\u0131nda ay\u0131r\u0131c\u0131 olarak bile kullan\u0131labilir.<\/p>\n
Al\u00fcmina ayn\u0131 zamanda mikro\u00e7ipler ve elektronik cihazlar i\u00e7in silikon gofret \u00fcretiminde \u00f6nemli bir hammaddedir ve termal direnci, y\u00fcksek kaynama\/erime noktalar\u0131 ve m\u00fckemmel iletkenlik \u00f6zellikleri nedeniyle \u0131\u015f\u0131k yayan diyotlar\u0131n (LED'ler) \u00fcretiminde temel bir bile\u015fen olarak hizmet eder.<\/p>\n
Mevcut bulu\u015f, bir al\u00fcmina tozu numunesinin safs\u0131zl\u0131klar\u0131n\u0131 \u00f6l\u00e7mek i\u00e7in bir y\u00f6ntem tan\u0131mlamaktad\u0131r. Bunu yapmak i\u00e7in, bir al\u00fcmina \u00f6rne\u011fi bir X-\u0131\u015f\u0131n\u0131 demetine maruz b\u0131rak\u0131l\u0131r ve k\u0131r\u0131n\u0131m a\u00e7\u0131s\u0131 ve yo\u011funlu\u011fu daha sonra \u00f6l\u00e7\u00fcm i\u00e7in kaydedilir. Daha sonra, kafes sabiti hesaplanabilir ve bu sabit ile al\u00fcmina tozu \u00f6rne\u011finin safs\u0131zl\u0131k i\u00e7eri\u011fi aras\u0131ndaki korelasyon kurulabilir.<\/p>","protected":false},"excerpt":{"rendered":"
Alumina powder is an indispensable core and filler material in nanocomposites, and also serves as an important support compound for […]<\/p>","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":[2],"tags":[],"class_list":["post-7","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/aluminapowder.net\/tr\/wp-json\/wp\/v2\/posts\/7","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aluminapowder.net\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aluminapowder.net\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aluminapowder.net\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aluminapowder.net\/tr\/wp-json\/wp\/v2\/comments?post=7"}],"version-history":[{"count":1,"href":"https:\/\/aluminapowder.net\/tr\/wp-json\/wp\/v2\/posts\/7\/revisions"}],"predecessor-version":[{"id":8,"href":"https:\/\/aluminapowder.net\/tr\/wp-json\/wp\/v2\/posts\/7\/revisions\/8"}],"wp:attachment":[{"href":"https:\/\/aluminapowder.net\/tr\/wp-json\/wp\/v2\/media?parent=7"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aluminapowder.net\/tr\/wp-json\/wp\/v2\/categories?post=7"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aluminapowder.net\/tr\/wp-json\/wp\/v2\/tags?post=7"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}