zirconia toughened alumina egosila na akụrụngwa ya dị elu ma e jiri ya tụnyere zirconia monolithic, gụnyere mgbaji siri ike na ike mgbanwe. Nkwụsi ike nke ZTA sitere na usoro matrix ya nke na-echebe ma gbochie mgbanwe nke mkpụrụ osisi tetragonal zirconia., na-enyere ya aka iguzogide mbibi n'okpuru ọnọdụ hydrothermal in-vivo.
Ike Flexural
Site na ịgbakwunye zirconia na alumina ceramics, zirconia toughened alumina na-emepụta. Ihe a na-egosipụta ike mgbanwe dị elu yana ịdịte aka igwe n'ọnọdụ ndị chọrọ ya, ma na-eguzogidekwa corrosion kemịkalụ yana ikpughe na mmiri nke anụ ahụ.
zirconia toughened alumina nwere ike iguzogide mgbanwe ngwa ngwa na okpomọkụ n'ihi akụkụ zirconia ya gbasasịrị n'ime matriks alumina na-enweta ume ọkụ na ịmepụta nrụgide nrụgide iji gbochie mgbawa., na-eme ka ọ dị mma maka iji ya na ngwa ụlọ ọrụ dị iche iche dị ka ihe ọkụ ọkụ na igwe turbine uzuoku.
Seramiiki a na-ejikọta ọnụ na-ejikọta ọmarịcha àgwà nke ma alumina na zirconia iji wepụta ike ọzọ na nkwụsị ọkụ ọkụ., na elu isi ike, ike mgbanwe, mgbaji siri ike na iyi nguzogide karịrị 99% alumina dị ọcha n'ihe siri ike, ike na eyi iguzogide.
Mgbaji siri ike
Zirconia na-eme ka mgbaji siri ike nke seramiki alumina dịkwuo mma site na mgbanwe mgbanwe. Mgbe kụrụ, zirconia metastable yttrium-stabilised zirconia na-agbanwe ghọọ ihe owuwu kristal monoclinic nke na-emepụta nrụgide mkpakọ nke na-egbochi ịgbasa mgbawa..
Zirconia toughened alumina bụ ihe dị mma maka ịmepụta ngwaọrụ ịkpụ n'ihi ike ya, nkwụsi ike thermal na iguzogide esemokwu. Ọzọkwa, Njirimara ya dị elu na-eme ka ọ dị ogologo ndụ na ntụkwasị obi ya.
ZTA emepụtara site na gelcasting nwere ngwakọta pụrụ iche nke ike mgbanwe, mgbaji siri ike, biocompatibility na okpomọkụ / corrosion mgbochi nke na-eme ka ọ dị mma maka ịwa ahụ dochie hip. Site na usoro gelcasting, ọ ga-ekwe omume ịhazi ike ike ya - mgbaji siri ike - ike mgbanwe site n'ịgbanwe ọkwa slurry siri ike., ebu ọkpụrụkpụ ma ọ bụ sintering okpomọkụ paramita ibuli rịzọlt.
Ihe mgbakasị ahụ-mgbagọ
zirconia toughened alumina ihe na-anya isi ike ma na-eyi nguzogide, yana nkwụsi ike pụrụ iche maka ịkwado ibu dị arọ na-enweghị deforming n'okpuru nrụgide. Ọzọkwa, ọ na-etu ọnụ nke ọma nguzogide ujo na-eme ka ọ nwee ike ịnagide mgbanwe mgbanwe okpomọkụ na mberede na-enweghị mmerụ ahụ..
Ọdịnaya Zirconia dị n'obere oke na-abawanye mmebi ịka nká site na microcracks emepụtara n'oge jụrụ oyi mgbe emechara nke na-eme dị ka ụzọ nhọrọ maka ịbanye mmiri n'ime ihe seramiiki., na-eduga na microcracks na-etolite n'oge jụrụ oyi nke na-arụ ọrụ dị ka ụzọ nhọrọ maka ntinye na ịgbasa n'ime ya. N'aka nke ọzọ, Mgbe n'okpuru ọnụ ụzọ a, irighiri ihe zirconia na-enwe mgbanwe na-akpata nrụgide site na tetragonal n'ime usoro monoclinic nke na-ebelata mmebi ịka nká..
Ike ọdụdọ
Zirconia toughened alumina bụ ihe siri ike ma na-adịgide adịgide nke nwere nguzogide iyi mara mma na nkwụsi ike ọkụ, na-eme ka ọ dị mma maka ihe ndị na-achọ ka ọ dị jụụ. Na mgbakwunye, Ebe ndị na-ekpo ọkụ na-ekpo ọkụ dị ka nke a na-enye njikwa okpomọkụ yana nguzogide esemokwu na-eme ka ha bụrụ nhọrọ kacha mma.
N'okpuru nrụgide, ZTA na-enwe mgbanwe nke oge site na tetragonal gaa na monoclinic nke na-egbochi mgbasa mgbawa ma na-abawanye ike mgbaji., mana ụfọdụ ọmụmụ na-egosi na ịba ụba zirconia na-akwụghị ọtọ na-eduga n'ibelata ike tensile.
ceramik ZTA na-enwekarị 10%-20% zirconia, nke na-enye ohere ka ahaziri ya kpọmkwem maka ngwa ọ bụla. ZTA dakọtara, okpomọkụ na-eguzogide, corrosion na-eguzogide, siri ike iji guzogide nrụgide, Nhọrọ dị ọnụ ahịa maka ceramics zirconia dị ọcha ma nwee ike iguzogide okpomọkụ dị elu na-enweghị mmebi. Ndị na-emepụta valve akara na-ahọrọkarị ya n'ihi nrụrụ-eguzogide ya na ikike ijide nrụgide – àgwà niile dị mma maka ngwa akara valve.
Mmetụta Mmetụta
zirconia toughened alumina na-eguzogide corrosion nke ukwuu ma nwee ike ọrụ pụrụ iche, na-eme ka ha dị mma maka ngwa chọrọ ike na ike n'otu oge. Ọzọkwa, ZTA na-enye nchekwa ego karịa ceramik zirconia dị ọcha.
Ijikọta alumina na zirconia na-emepụta seramiiki nwere ike mgbanwe dị elu, mgbaji siri ike, ma na-eyi nguzogide karịa alumina dị ọcha. Ọ nwere ike iguzogide ibu na mmetụta dị elu ma a na-ejikarị ya dị ka nkwalite karịa alumina ọkọlọtọ n'ụdị chọrọ atụmatụ ndị ọzọ..
Mgbanwe na-emesi ike mere ka ike a dịkwuo elu; n'okpuru ọnọdụ nrụgide, Ihe irighiri zirconia na-agbanwe site na tetragonal ha gaa na ọdịdị monoclinic ma gbasaa, mkpakọ mgbawa na alumina matrix wee si otú ahụ na-eduga na elu mgbanwe ike karịa YSZ (Ọnụọgụ 6c na d).
Nguzogide corrosion
Nchikota nke seramiiki ZTA nke alumina na zirconia na-enye nguzogide corrosion kacha elu ma e jiri ya tụnyere nke dị ọcha 99% ihe alumina naanị, ma nwee isi ike ka elu, mgbaji siri ike, ike mgbanwe, na ihe ndị siri ike karịa ndị asọmpi ya.
ZTA nwere ọmarịcha eyi na mgbochi abrasion yana ndakọrịta kemịkalụ, na-eme ka ọ dị mma maka ngwa mmepụta ihe na-achọ ịdịte aka n'ibu. Ọzọkwa, Nchikota nke ihe na-etu ọnụ magburu onwe ya thermal ujo iguzogide ikwe ngwa ngwa okpomọkụ mgbanwe na-enweghị cracking ma ọ bụ na-agbaji.
Ihe irighiri zirconia agbakwunyere na matrix alumina na-abawanye ike mgbaji ya site na ngbanwe siri ike., mmetụta sitere na nrụgide zirconia ụmụ irighiri ihe na-agbanwe site na tetragonal gaa na kristal monoclinic mgbe ekpughere ya na nrụgide mkpakọ., na-emepụta nrụgide mkpakọ nke na-egbochi mgbasa mgbasa ma na-abawanye ike mgbaji ya nke ukwuu.
Nguzogide okpomọkụ nke okpomọkụ
zirconia toughened alumina bụ seramiiki dị elu nke jikọtara alumina na zirconia. Iji mepụta ZTA, A na-ewebata zirconia n'ime matriks alumina bụ isi tupu ịmegharị ya maka ike gbakwunyere na nkwụsi ike ọkụ n'elu seramiki omenala alumina.; ọzọkwa ọ na-anya isi ike, ike mgbanwe, na njupụta karịa ibe ya.
Usoro nkwụsi ike nke ZTA gụnyere ngbanwe oge na-akpata nchekasị site na tetragonal gaa na monoclinic zirconia akụkụ kristal kristal., na-abawanye ike mgbaji mgbaji ma na-echebe ya pụọ na ujo ọkụ na abrasion n'ibu. zirconia toughened alumina na-adabara nke ukwuu na ọ naghị emebi ngwa ngwa, na-eme ka ọ dị mma maka akara valve. Ọzọkwa, ike mgbanwe ya dị elu na-enye ya ohere iguzogide nrụgide ahụ nke ọma.