Ike siri ike maka ngwa nrụpụta

Zirconia aluminom siri ike (ZTA) Akụkụ seramiiki na-ejikọta ike na ike nke alumina na ike mgbaji zirconia dị elu iji wepụta arụmọrụ na ogologo ndụ maka ngwa mmepụta ihe..

Mgbanwe nke nrụgide nke ezigbo tetragonal zirconia irighiri ihe agbakwunyere n'ime matrix alumina na-eduga na ihe ZTA nwere ike na ike dị elu., adabara maka ojiji n'akụkụ dị iche iche siri ike.

Isi ike

Ihe ZTA na-ejikọta ike nke alumina na ike zirconia maka iguzogide iyi na abrasion na-enweghị atụ.. A na-eme ka mmetụta a kwe omume site na ngbanwe nke nrụgide na-ebute ike: mgbe nrụgide, Ihe irighiri zirconia na-agbanwe site na tetragonal metastable ha n'ụdị monoclinic kwụsiri ike; Mgbasawanye olu nke mgbanwe nhazi a kpatara na-enyere aka mechie mgbawa ọ bụla n'ime matrix alumina ma na-abawanye ike nke ukwuu..

ZTA nwere platelet zirconia nke na-abanye n'ime matrix alumina n'oge a na-eme ihe, imeziwanye ike mgbaji na ike ka ọ na-abawanye ike mgbaji, ịmepụta ihe nwere ike mgbanwe dị ukwuu karịa Y-TZP na ruo ugboro abụọ ike ike ọgwụgwụ cyclic ya. Ngwakọta siri ike sitere na alumina jikọtara ya na ike zirconia na-eme ka ZTA bụrụ nhọrọ kacha mma maka ngwa ụlọ ọrụ na-achọ nguzogide mmebi..

Ịdị ogologo

Zirconia aluminom siri ike (ZTA) na-anya isi ike mgbanwe na mkpakọ pụtara ìhè, yana mgbasawanye thermal dị ala dabara na nke alumina na ihe ndị na-eguzogide iyi.

A na-emepụta alumina siri ike nke zirconia site na ịgbakwunye mkpụrụ osisi tetragonal zirconia site na mgbanwe nrụgide na-akpata na matrix alumina siri ike., na-etinye ha n'ime nhazi ya ma na-egbochi mgbanwe ha na mpaghara mpaghara kama ịgbasa ebe niile.

Usoro a na-eme ka ngwakọta alumina-zirconia dị ogologo karịa monolithic zirconia n'ihi nguzogide ha na mmịnye mmiri site na kemisorption.; Zirconia monolithic nwere ike ịmịkọrọ mkpụrụ ndụ mmiri pola nke na-eduga n'ibelata okpomọkụ dị ala ma mechaa daa mgbe ejiri ogologo oge mee ihe..

ZTA, n'akụkụ aka nke ọzọ, emebere ya ka ọ dị mfe mgbanwe tetragonal-to-monoclinic site na njiri mara ya na ihe mgbakwunye kemịkal.. CeramTec na-ere ahịa Biolox Delta ZTA dịka ọmụmaatụ; Nhazi a nwere yttria na strontium aluminate iji kwado usoro siri ike n'ime usoro zirconia ya na ya mere ọ nwere obere ihe ize ndụ nke mmebi okpomọkụ dị ala ma na-anagide ọnọdụ okpomọkụ dị elu..

Nguzogide corrosion

ceramik ZTA na-enye nguzogide corrosion dị elu karịa ndị ibe ha alumina, yabụ enwere ike iji ya na ngwa ndị nwere ọnọdụ siri ike.. Ọzọkwa, ZTA nwere ike iguzogide okpomọkụ dị elu ka ọ na-enye nkwụsi ike kemịkalụ ka ukwuu.

Garvie et al (1975) gosiri na-agbakwụnye 10-20% zirconia na-akwụghị ọtọ nwere ike ime ka ike dịkwuo elu ma e jiri ya tụnyere alumina, site mgbanwe toughening. Usoro a na-eme mgbe mwepu tetragonal metastable gbasasịrị nke ọma na-agbanwe ghọọ monoclinic zirconia n'okpuru nrụgide na-eme ka mmụba olu nke na-akpakọ mgbawa ma na-ebelata ma ọ bụ kwụsị mgbasa ha..

Usoro a yiri nke nrụgide nrụrụ kpatara; Otú ọ dị, iji mee ka mgbanwe na-aga n'ihu na mpaghara nrụgide ga-abụrịrị nnukwu; maka mgbawa na ụdị ZTA ike a na-abịa site na mgbakasị nrụgide na saịtị mgbaji.

Okpomọkụ Nguzogide

Zirconia Toughened Alumina na-anya isi ebe mgbaze dị elu na nguzogide corrosion, na-eme ka ọ bụrụ ihe dị mma maka akụrụngwa na-ekpugherekarị na okpomọkụ dị elu. Ọzọkwa, nke a variant nwere nnukwu esemokwu-eguzogide karịa ọkọlọtọ alumina, na-enyere aka ibelata mgbakasị ahụ na akụrụngwa kpughere ọkwa dị elu nke ike kinetic.

A na-emepụta seramiki ZTA site na ngbanwe nke nrụgide tetragonal zirconia n'ime matriks alumina., na-eke nrụgide nrụgide n'ime ha nke na-egbochi ịgbasa mgbawa, na-abawanye ma ike na ike siri ike mgbe ị na-enye nguzogide ujo okpomọkụ na-enweghị mgbaji ma ọ bụ mgbawa. Ha na-anya isi nke ọma thermal ujo iguzogide; iguzogide mgbanwe ngwa ngwa na okpomọkụ na-enweghị mgbaji ma ọ bụ mgbawa n'okpuru nrụgide.

Zirconia-toughened alumina nwere ọtụtụ ojiji n'ofe ọtụtụ ụlọ ọrụ n'ihi nnukwu akụrụngwa ya.. Mechanical engineering na-eji ya maka ihe mgbapụta na akara; nhazi semiconductor na-eji ya eme ihe n'ihi nkwụsi ike ya na ike ya; ikuku ikuku, ụlọ ọrụ ụgbọ ala na ike na-eji ya dị ka akụkụ injin n'ihi nguzogide ya megide corrosion na kemịkalụ siri ike.; ọ pụrụ ọbụna iguzogide elu mgbanwe ike maka eze implants!