{"id":6618,"date":"2021-04-04T12:30:22","date_gmt":"2021-04-04T12:30:22","guid":{"rendered":"https:\/\/www.aluminaceramicball.com\/?p=6618"},"modified":"2021-07-12T02:13:27","modified_gmt":"2021-07-12T02:13:27","slug":"comparacao-dos-parametros-entre-o-po-de-alumina-e-o-po-de-corindo-branco","status":"publish","type":"post","link":"https:\/\/www.aluminaceramicball.com\/pt\/comparacao-dos-parametros-entre-o-po-de-alumina-e-o-po-de-corindo-branco\/","title":{"rendered":"Compara\u00e7\u00e3o dos par\u00e2metros entre o p\u00f3 de alumina e o p\u00f3 de corindo branco"},"content":{"rendered":"
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P\u00f3 de alumina<\/a> e p\u00f3 de corindo branco<\/a> t\u00eam a mesma apar\u00eancia e nomes semelhantes. Muitas pessoas querem esclarecer a diferen\u00e7a entre eles. A seguir, distingue-os da sua pr\u00f3pria composi\u00e7\u00e3o e diz-lhe a diferen\u00e7a:<\/p>

1. P\u00f3 de alumina<\/p>

(1) Aspeto: p\u00f3 branco, fase cristalina \u03b3;<\/p>

(2) Cor: branco, azul escuro ap\u00f3s calcina\u00e7\u00e3o.<\/p>

(3) Teor %: superior a 99,9%;<\/p>

(4) Tamanho m\u00e9dio das part\u00edculas (nm): 20\u00b15;<\/p>

(5) Ponto de ebuli\u00e7\u00e3o: 2980 \u2103;<\/p>

(6) Densidade relativa (\u00e1gua = 1): 3.97-4.0;<\/p>

(7) Ponto de fus\u00e3o: 2010 \u2103-2050 \u2103;<\/p>

2. P\u00f3 de corindo branco<\/p>

(1) Forma cristalina: sistema cristalino trigonal;<\/p>

(2) Calor espec\u00edfico (Cal\/g.C): 0.26 (20-90C);<\/p>

(3) Densidade: 3,90 g\/cm3;<\/p>

(4) Coeficiente de expans\u00e3o linear: (7-9)*10^-6\/K (0-1600C).<\/p>

(5) Ponto de fus\u00e3o: 2250C;<\/p>

(6) \u00cdndice de refra\u00e7\u00e3o: e=1,760 w=1,768 (linha Na);<\/p>

(7) *Temperatura de funcionamento elevada: 1900C;<\/p>

(8) Dureza: Dureza Knoop 2000-2200Kg\/mm2, dureza Mohs 9.0;<\/p>

(9) Condutividade t\u00e9rmica: 900C \u00e0 temperatura ambiente (Cal\/cm3.seg.C);<\/p>

P\u00f3 de corindo branco<\/a> \u00e9 adequado para o fabrico de cer\u00e2mica, ferramentas abrasivas consolidadas em resina, bem como para retifica\u00e7\u00e3o, polimento, jato de areia, fundi\u00e7\u00e3o de precis\u00e3o, etc. Tamb\u00e9m pode ser utilizado para o fabrico de materiais refract\u00e1rios de alta qualidade. O p\u00f3 de alumina pode ser utilizado na condu\u00e7\u00e3o de calor, polimento, galvanoplastia, catalisador, etc.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Alumina powder and white corundum powder have the same appearance and similar names. Many people want to clarify the difference between them. The following distinguishes it from its own composition and tells you the difference: 1. Alumina powder (1) Appearance: white powder, crystalline phase \u03b3 phase; (2) Color: white, dark blue after calcination. (3) Content […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_templately_pack_id":"","_templately_imported_at":"","_templately_source":"","_templately_import_session_id":"","site-sidebar-layout":"default","site-content-layout":"default","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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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