Kedu ihe dị iche n’etiti seramiki alumina na corundum?

Alumina seramiiki mkpanaka

1. Alumina seramiki;

Alumina seramiiki bụ ihe seramiiki nwere alumina (Al2O3) dị ka isi ahụ, ejiri maka sekit agbakwunyere ihe nkiri siri ike. Alumina seramiiki nwere ezigbo conductivity, arụ ọrụ ike na elu okpomọkụ iguzogide. Ekwesiri iburu n’uche na a choro ihicha ultrasonic. Alumina ceramik bụ ụdị ceramik nwere ọtụtụ ojiji. N’ihi arụmọrụ ya dị elu, a na-ejikarị ya eme ihe na ọha mmadụ nke oge a iji gboo mkpa nke iji kwa ụbọchị na arụmọrụ pụrụ iche.

Alumina seramiiki tube

Alumina ceramics dị elu dị ọcha bụ ihe seramiiki nwere ọdịnaya Al2O3 karịa 99.9%. N’ihi na ha sintering okpomọkụ dị elu dị ka 1650-1990 ℃, na nnyefe wavelength bụ 1 ka 6 μm, ha na-emekarị mere nke a wụrụ awụ iko iji dochie platinum crucibles; na-eji ya ọkụ nnyefe Enwere ike iji ya dị ka sodium oriọna tube, na ọ ga-eji dị ka ihe integrated circuit substrate na elu-ugboro ikpuchi ihe na ngwá electronic.

A na-ekewa seramiiki alumina nkịtị n’ime 99 poselin, poselin 95, poselin 90, poselin 85 na ụdị ndị ọzọ dị ka ọdịnaya Al2O3 dị iche iche si dị. Mgbe ụfọdụ, ndị nwere 80% ma ọ bụ 75% Al2O3 ọdịnaya na-nkewa dị ka nkịtị alumina seramiiki usoro. N’ime ha, a na-eji 99 alumina poselin na-eme ka ọkụ ọkụ dị elu, tubes refractory refractory na ihe ndị pụrụ iche na-eguzogide, dị ka seramiiki bearings, seramiiki akara na diski valve mmiri; 95 alumina poselin bụ nke a na-ejikarị dị ka akụkụ na-eguzogide corrosion na eyi na-eguzogide; 85 poselin N’ihi na a na-agwakọta ya na ụfọdụ talc, a na-eme ka arụmọrụ eletrik na ike arụ ọrụ dịkwuo mma, a pụkwara iji ọla dị ka molybdenum, niobium, na tantalum mechie ya, na ụfọdụ a na-eji dị ka ngwaọrụ ọkụ eletrik.

2. Ọkpụkpụ;

Corundum, onye aha ya si India, bụ aha mineral. Enwere isi ihe atọ dị iche iche nke ịdị n’otu nke corundum Al2O3, ya bụ α-Al2O3, β-Al2O3, na γ-Al2O3. Isi ike nke corundum bụ nke abụọ na naanị diamond. A na-eji Corundum eme ihe maka ihe abrasive dị elu, ihe na-ebu seramiiki maka elekere na igwe seramiiki ziri ezi. kristal wuru ewu nke dabere na Ruby dị ka ihe na-ekupụta laser. Rubies na sapphires bụ ma mineral corundum. Ewezuga mmetụta ọkụ kpakpando, ọ bụ naanị corundum translucent-transperent na nke na-egbuke egbuke ka enwere ike iji dị ka nkume bara nnukwu uru. A na-akpọ agba uhie ruby, ebe agba ndị ọzọ nke corundum na-akpọkọta sapphire na azụmahịa.

Aha Corundum sitere na India ma bụrụ aha mineral. A na-akpọ ndị gemologically ruru eru Ruby na Sapphire. Myanmar, Sri Lanka, Thailand, Vietnam, na Cambodia bụ ndị kasị mkpa na-eweta rubi na sapphire dị elu n’ụwa. Mba ndị ọzọ na-emepụta ihe gụnyere China, Australia, United States na Tanzania.

Corundum bụ nkume bara nnukwu uru nke kpụrụ si na kristal nke alumina (Al2O3). Corundum agwakọta ya na chromium dara na-acha uhie uhie na-acha uhie uhie ma a na-akpọkarị ruby; ebe corundum na-acha anụnụ anụnụ ma ọ bụ nke na-enweghị agba na-ekewakarị dị ka sapphire.

Corundum nọ n’ọkwa 9th na tebụl ike nke Mohs. Ike ndọda a kapịrị ọnụ bụ 4.00, yana o nwekwara owuwu lattice kọlụm hexagonal. Site n’ịdị ike nke corundum na ọnụ ahịa ya dị ala karịa diamond, ọ ghọọla ihe dị mma maka akwụkwọ aja na ihe egweri.

Corundum nwere iko iko na ike nke 9. Oke nke 3.95-4.10. Ọ na-etolite n’okpuru ọnọdụ nke elu okpomọkụ, ọgaranya aluminum na ogbenye silicon C, na tumadi metụtara magmatism, kọntaktị metamorphism na mpaghara metamorphism.

Corundum bụ ihe mmadụ mere site na bauxite dị ka isi akụrụngwa n’ime ọkụ Ngwuputa. Enwere ike iji ya dị ka ihe abrasive na refractory. A na-akpọ corundum na-acha ọcha nke nwere ịdị ọcha dị elu nke a na-akpọ corundum ọcha, na corundum agba aja aja nke nwere obere ihe adịghị ọcha ka a na-akpọ corundum brown.