Zirconia aluminom siri ike – Ike emelitere maka ọmarịcha ụlọ ọrụ

Zirconia aluminom siri ike (ZTA) bụ seramiiki pụrụiche, dị iche site na ịdị elu siri ike na nguzogide mgbaji n'ihi yttria stabilized zirconia particles gbasasịrị site na matriks alumina..

Ihe a nwere ike iguzogide mgbanwe okpomọkụ ngwa ngwa na-enweghị mgbawa ma ọ bụ agbaji, na-eguzogide corrosion kemịkalụ ma na-enye nguzogide ujo dị mma.

Nguzogide nrụrụ dị mma

ceramik ZTA na-enye ezigbo nguzozi n'etiti ike na uru, ịdị ike karịa ngwaahịa alumina mana ọ dị ọnụ ala karịa zirconia dị ọcha. Njirimara igwe ha – mgbaji siri ike, ike mgbanwe na ike siri ike yana nguzogide ujo ọkụ – mee ka ha dị mma maka ịmepụta ngwá ọrụ mmepụta ihe dị ka ịkpụ wiil.

ZTA na-enweta ihe onwunwe ya dị elu n'ihi mgbakwunye nke yttria stabilized zirconia (YSZ) ihe dị n'ime matriks alumina. Mgbe a gbasasịrị n'otu n'otu, YSZ na-enyere aka ịkwalite ma ike ike - mgbaji siri ike na ike ike nke ihe abụọ ahụ na-ebute nguzogide eyi pụrụ iche., kemịkalụ inertness na ọnụ ụlọ okpomọkụ yana ihe ike siri ike / owuwe maka ihe seramiiki pụrụ iche.

Ngwaahịa ZTA’ Ngwongwo akụrụngwa na-adabere kpamkpam na ụzọ nhazi ha maka imepụta ntụ ntụ, gụnyere ọgwụgwọ okpomọkụ, usoro calcination, usoro ihicha na usoro ịgbanye yana nhazi nke ahaziri ya na mgbakwunye agbakwunyere n'oge mmepụta. Ihe ndị a niile na-enwe mmetụta ozugbo na ike ha, elasticity na ike ike Njirimara.

Magburu onwe Thermal Shock Resistance

ceramik ZTA na-enye ezigbo nguzogide ujo, na-eme ka ha bụrụ nhọrọ magburu onwe ya maka ngwa ikuku na-achọ ike dị elu, ike, na chemical inertness. Mgbe a gbasasịrị n'otu n'otu n'ime matrix alumina YSZ nwere ike imeziwanye ya. Otu ngbanwe dị otú ahụ siri ike zirconia-alumina seramiiki nke anyị na-enye bụ BIOLOX delta nke a pụrụ ịhụ na-eji maka orthopedais na-ebu ibu dị ka mgbanaka hip..

Mgbanwe nke nrụgide sitere na tetragonal metastable gaa n'ụdị monoclinic nke YSZ na-emepụta mgbasawanye olu na nhịahụ nke na-egbochi mgbasa mgbasa., na-abawanye ike mgbaji ma na-eme ka ike mgbanwe dị n'otu oge. Arụmọrụ seramiiki mgbanwe alumina-YSZ dị otú ahụ na-adabere n'ọnọdụ nhazi yana stoichiometry nke ihe mejupụtara oxides na usoro sintering..

Ọnọdụ sintering a na-achịkwa nke ọma nwere ike ime ka ike mgbanwe dị ala na ịdị mma nke matriks alumina-YSZ., nwere ike n'ihi ọnyà ikuku ma ọ bụ agglomeration urughuru. Site n'ịgbakwụnye ihe mgbakwunye dị ka yttria ma ọ bụ magnesium oxides, Otu nwere ike ibelata tetragonal ka ọ bụrụ monoclinic mgbanwe okpomọkụ ma welie zirconia sintering Njirimara.

Nguzogide iyi mara mma

Ọ bụghị naanị na ZTA kacha mma n'ihe gbasara nguzogide ujo na nguzogide corrosion, mana ọ na-eyikwa nke ukwuu n'ihi usoro ngbanwe tetragonal-monclinic ya. Ọzọkwa, Nnyocha ọmụmụ vitro egosila na ihe ndị dị na ZTA adịghị adịkarị mfe imebi hydrothermal – ihe dị mkpa na ngbanwe hip femoral isi na iko ceramik (dị ka BIOLOX delta nke CeramTec mepụtara).

Nnwale ejiji eji eme ihe nke emere na akụrụngwa ZTA nke ihe mejupụtara alumina-zirconia arụpụtala ọmarịcha nsonaazụ n'ihe gbasara nguzogide iyi., ike mgbanwe na ike. Ihe nlele ZTA ekpughere n'ọtụtụ okirikiri dị na simulator hip gosipụtara mbelata pere mpe yana ịdị oke ala dị ala karịa ihe mejupụtara zirconia monolithic..

Akụkụ ZTA egosila na ọ dabara maka ngwa na-achọ ngwa n'ichepụta ụgbọ ala (na-ekpo ọkụ na oyi na-akpụ tooling, nwere ike imechi rollers na capstans); ụlọ ọrụ ike (bearings, ntinye orifice na ihe nchọta vortex); nhazi nri (homogenizing mgbapụta akụkụ); na ụlọ ọrụ ike. Njirimara igwe ha na-adabere n'ọtụtụ mgbanwe: ụzọ nkwadebe eji akwadebe ntụ ntụ; usoro ihicha eji n'oge calcination; Usoro nhazi nke a nakweere n'oge usoro ịgba ọsọ; ahaziri nhazi; mgbakwunye kwukwara na urughuru size nkesa n'etiti ndị ọzọ.

Ike mara mma

ZTA ceramics na-eji ngbanwe na-akpata nrụgide iji jikọta zirconia n'ime matrix alumina., na-abawanye ike na ogologo oge ka oge na-aga. Nke a na-eme ka ZTA bụrụ ihe ngwọta seramiiki magburu onwe ya maka ngwa ụlọ ọrụ na-achọ ike, elu corrosion eguzogide, nnabata nke ujo thermal na ntachi obi ujo.

N'okpuru nsogbu, tetragonal metastable na-asọpụta na cubic alumina na-enwe mgbanwe mberede ka ọ bụrụ ụmụ irighiri ihe nke na-eme ka ike gbajie ya site n'ịmepụta akwa mkpuchi elu nke na-agbaso mgbape n'ime matriks ya..

Ntugharị siri ike bụ ihe a maara dị ka mgbaji siri ike, ebe mgbaji siri ike nke alumina na-eme ka ogologo mgbape dị mkpụmkpụ, obere mgbape blunting, yana mmekọrịta dị mma na microcracks ndị dịbu adị. Nke a na-enye ohere nchikota nke siri ike na nke siri ike nke a na-eji na seramiki ọkwa ahụike ọgbara ọhụrụ dị ka nnọchi hip.. Ọzọkwa, Yttrium kwụsiri ike zirconia implants mara dị ka y-TZP na-enye nchebe pụọ na eyi ka oge na-aga.