{"id":6604,"date":"2021-04-04T12:03:07","date_gmt":"2021-04-04T12:03:07","guid":{"rendered":"https:\/\/www.aluminaceramicball.com\/?p=6604"},"modified":"2023-05-13T14:53:37","modified_gmt":"2023-05-13T14:53:37","slug":"toepassingen-van-aluminiumoxidepoeder-in-de-industrie","status":"publish","type":"post","link":"https:\/\/www.aluminaceramicball.com\/nl\/toepassingen-van-aluminiumoxidepoeder-in-de-industrie\/","title":{"rendered":"De eigenschappen en het gebruik van aluminiumoxidepoeder in de industrie"},"content":{"rendered":"

De meest voorkomende zijn \u03b1-Al2O3 en \u03b3-Al2O3. Korund in de natuur is \u03b1-Al2O3, hexagonale dicht opeengepakte kristallen. \u03b1-Al2O3 heeft een smeltpunt van 2015\u00b115\u00b0C, een dichtheid van 3,965g\/cm3 en een hardheid van 8,8. Het is onoplosbaar in water, zuur of base. Het is onoplosbaar in water, zuur of base. \u03b3-Al2O3 is een kubisch, gesloten kristal, onoplosbaar in water, maar oplosbaar in zuur en base, en is een typisch amfoteer oxide.<\/p>\n

    \n
  1. De belangrijkste bestanddelen van robijn en saffier zijn aluminiumoxide. De kleur verschilt door andere onzuiverheden. Robijn bevat chroomoxide en is rood, terwijl saffier ijzeroxide en titaniumoxide bevat en blauw is.<\/li>\n
  2. In het hoofdbestanddeel bauxiet van bauxiet is het gehalte aan aluminiumoxide het hoogst. Industrieel wordt bauxiet gezuiverd tot aluminiumoxide door het Bayer-proces en vervolgens omgezet in aluminiummetaal door het Hall-Heroult proces.<\/li>\n
  3. Aluminiumoxide is de reden waarom metaalaluminium niet gemakkelijk corrodeert in de lucht. Zuiver metaalaluminium reageert gemakkelijk met zuurstof in de lucht om een dunne aluminiumoxidelaag te vormen die het oppervlak van aan de lucht blootgesteld aluminium bedekt. Deze aluminiumoxidefilm kan voorkomen dat aluminium verder oxideert. De dikte en de eigenschappen van deze oxidelaag kunnen worden verbeterd door een proces dat anodiseren wordt genoemd.<\/li>\n
  4. Aluminium is een goede geleider van elektriciteit en warmte. De kristalvorm van aluminium emery is door zijn hoge hardheid geschikt voor abrasieve materialen en snijgereedschappen.<\/li>\n
  5. Aluminiumoxide poeder<\/a> wordt vaak gebruikt als medium voor chromatografie.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"

    The common ones are \u03b1-Al2O3 and \u03b3-Al2O3. Corundum in nature is \u03b1-Al2O3, hexagonal close-packed crystals. \u03b1-Al2O3 has a melting point of 2015\u00b115\u00b0C, a density of 3.965g\/cm3, and a hardness of 8.8. It is insoluble in water, acid or alkali. \u03b3-Al2O3 is a cubic close-packed crystal, insoluble in water, but soluble in acid and alkali, and […]<\/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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