Ajụjụ
Kedu ihe bụ Tetragonal Zirconia Polycrystal?
2023-07-20

High-temperature refractory Zirconia ceramic crucibles


Ihe ntughari seramiiki dị elu 3YSZ, ma ọ bụ ihe anyị nwere ike ịkpọ tetragonal zirconia polycrystal (TZP), bụ nke zirconium oxide ejirila 3% mol yttrium oxide kwụsie ike.

 

Ihe akara zirconia ndị a nwere obere ọka na ike siri ike na ọnụ ụlọ ebe ọ bụ na ọ fọrọ nke nta ka ọ bụrụ tetragonal niile. Na obere ọka ya (sub-micron) na-eme ka o kwe omume iji rụzuo oke elu ma jikwaa ihu dị nkọ.

 

A na-ejikarị Zirconia eme ihe dị ka ihe nkwụnye ma ọ bụ MgO, CaO, ma ọ bụ Yttria iji kwalite mgbanwe mgbanwe. Kama mwepụta nke mbụ na-emepụta ihe owuwu kristal tetragonal, nke a na-emepụta ihe owuwu kristal nwere akụkụ nke nwere ike ime ka ọ dị jụụ. Tetragonal na-ebuli elu na-enweta mgbanwe oge na-akpata nrụgide na nso nso nsonye mgbape na-aga n'ihu na mmetụta. Usoro a na-eme ka nhazi ahụ gbasaa mgbe ọ na-etinye ike dị ukwuu, nke na-akpata ihe siri ike dị ịrịba ama nke ihe a. Okpomọkụ dị elu na-ebutekwa mgbanwe dị ukwuu, nke na-enwe mmetụta dị njọ na ike ma na-akpata mgbasawanye akụkụ 3-7%. Site n'ịgbakwụnye ngwakọta ndị ahụ e kwuru n'elu, enwere ike ijikwa ọnụọgụ tetragonal mee ka nguzozi dị n'etiti ike na ọnwụ ike.

 

N'ebe okpomọkụ dị n'ime ụlọ, tetragonal zirconia kwụsiri ike na 3 mol% Y2O3 (Y-TZP) na-egosiputa arụmọrụ kachasị mma na usoro nke siri ike, na-ehulata ike. Ọ na-egosikwa akụrụngwa dị ka ionic conductivity, obere okpomọkụ conductivity, siri ike mgbe mgbanwe, na-akpụzi mmetụta ebe nchekwa. Tetragonal zirconia na-eme ka o kwe omume ịmepụta ihe ndị dị na seramiiki nwere nguzogide corrosion pụtara ìhè, nguzogide iyi dị elu, na imecha elu dị mma.

Ụdị njirimara ndị a na-enyere ya aka ka e jiri ya mee ihe n'ọtụtụ ebe dị ka ubi biomedical maka ntụgharị hip na nrụgharị eze, na n'ọhịa nuklia dị ka ihe mgbochi okpomọkụ na mkpuchi mmanụ mmanụ.


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