{"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":"comparaison-des-parametres-entre-la-poudre-dalumine-et-la-poudre-de-corindon-blanc","status":"publish","type":"post","link":"https:\/\/www.aluminaceramicball.com\/fr\/comparaison-des-parametres-entre-la-poudre-dalumine-et-la-poudre-de-corindon-blanc\/","title":{"rendered":"Comparaison des param\u00e8tres entre la poudre d'alumine et la poudre de corindon blanc"},"content":{"rendered":"
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Poudre d'alumine<\/a> et poudre de corindon blanc<\/a> ont la m\u00eame apparence et des noms similaires. De nombreuses personnes souhaitent clarifier la diff\u00e9rence entre les deux. Ce qui suit les distingue de leur propre composition et vous indique la diff\u00e9rence :<\/p>

1. Poudre d'alumine<\/p>

(1) Aspect : poudre blanche, phase cristalline \u03b3 ;<\/p>

(2) Couleur : blanc, bleu fonc\u00e9 apr\u00e8s calcination.<\/p>

(3) Contenu % : sup\u00e9rieur \u00e0 99,9% ;<\/p>

(4) Taille moyenne des particules (nm) : 20\u00b15 ;<\/p>

(5) Point d'\u00e9bullition : 2980 \u2103 ;<\/p>

(6) Densit\u00e9 relative (eau = 1) : 3.97-4.0 ;<\/p>

(7) Point de fusion : 2010 \u2103-2050 \u2103 ;<\/p>

2. Poudre de corindon blanc<\/p>

(1) Forme de cristal : syst\u00e8me cristallin trigonal ;<\/p>

(2) Chaleur sp\u00e9cifique (Cal\/g.C) : 0.26 (20-90C) ;<\/p>

(3) Densit\u00e9 : 3,90 g\/cm3 ;<\/p>

(4) Coefficient de dilatation lin\u00e9aire : (7-9)*10^-6\/K (0-1600C).<\/p>

(5) Point de fusion : 2250C ;<\/p>

(6) Indice de r\u00e9fraction : e=1,760 w=1,768 (ligne Na) ;<\/p>

(7) *Temp\u00e9rature de fonctionnement \u00e9lev\u00e9e : 1900C ;<\/p>

(8) Duret\u00e9 : Duret\u00e9 Knoop 2000-2200Kg\/mm2, duret\u00e9 Mohs 9.0 ;<\/p>

(9) Conductivit\u00e9 thermique : 900C \u00e0 temp\u00e9rature ambiante (Cal\/cm3.sec.C) ;<\/p>

Poudre de corindon blanc<\/a> convient \u00e0 la fabrication de c\u00e9ramiques, d'outils abrasifs consolid\u00e9s \u00e0 la r\u00e9sine, ainsi qu'au meulage, au polissage, au sablage, au moulage de pr\u00e9cision, etc. Elle peut \u00e9galement \u00eatre utilis\u00e9e pour la fabrication de mat\u00e9riaux r\u00e9fractaires de haute qualit\u00e9. La poudre d'alumine peut \u00eatre utilis\u00e9e pour la conduction thermique, le polissage, la galvanoplastie, les catalyseurs, 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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