Zirconia aluminom siri ike

Zirconia siri ike alumina (ZTA) bụ ihe seramiiki dị elu nke a na-ejikarị eme ihe na akara valve, bushes, ihe mgbapụta mgbapụta na ngwaọrụ ịkpụ n'ihi ike ya na nkwụsi ike ya – dị ka egosipụtara site n'ikike ya iguzogide ibu dị arọ na-enweghị mmebi dị ukwuu.

ZTA na-anya isi nkwụsi ike dị egwu ma nwee ike iguzogide mgbanwe mberede na mgbanwe okpomọkụ, yana ngwa ngwa okpomọkụ swings. Gụkwuo ka ịmatakwu gbasara ihe eji arụ ọrụ ya!

Isi ike

Zirconia agbakwunyere na matrix alumina na-abawanye ike ya, mgbaji siri ike na ike mgbanwe mgbe ọ na-abawanye iguzogide iyi na mbuze. Usoro a na-ejikarị eme ihe bụ ngbanwe nke oge na nhazi microcrack na-esote mana ọ nwekwara ike ịgụnye echiche nrụgide dị ka ọdabara..

Metastable tetragonal zirconia na-ebuli nke na-etolite ezigbo mgbasa n'ime matrix alumina nwere ike ịme mgbanwe ozugbo ka ọ bụrụ ụdị monoclinic mgbe ebuliri mmachi ha n'oge mgbape., na-enye ume megide nrụgide ubi na-akwọ ụgbọala mgbape propagation.

ZTA seramiiki nwere njiri siri ike na ike mgbaji dị elu ma e jiri ya tụnyere ceramik ndị ọzọ dabeere na oxide., yana ike ike ọgwụgwụ cyclic okpukpu abụọ nke Y-TZP. Ya mere, Njirimara ya na-eme ka ọ dị mma maka ngwa ndị na-achọ oke mgbochi iyi, kemịkalụ inertness na obere esemokwu yana ike dị elu na isi ike.

Ike Flexural

Enwere ike ịme ceramik ZTA site n'ịgbanwe nha nke yttria kwụsiri ike zirconia (Y-TZP) n'ime matriks alumina site na iji ịpị isostatic dị ọkụ, iji kwalite ike-mgbajie ike-ike nchikota ike na-eme ka ike ọgwụgwụ na-enweghị atụ nke cyclic karịrị seramiiki teknụzụ kachasị elu..

Y-TZP na-agbanwe agbanwe na matriks alumina na-arụpụta nguzobe nke tetragonal-monoclinic mgbanwe agglomerates nke na-abawanye ike mgbaji site na nkwụsi ike nke usoro mgbanwe. (Clausen 1976). Ọkachamma ịgafe mgbawa, agglomerates mgbanwe ndị a ga-agbakọ mpaghara n'ihu mgbawa n'ihu ma belata ọganihu ya, n'ikpeazụ na-abawanye mgbaji siri ike.

Ihe owuwu ihe a emeela ka e mepụta alumina-zirconia composites dị ka BIOLOX Delta, A na-eji ya eme ihe maka ngụkọta hips na ihe ndị ọzọ na-ebu orthopedic. Seramiiki biomaterial a nwere njiri nguzogide eyi, kemịkalụ inertness na ụlọ okpomọkụ, Mgbochi ujo ọkụ na ezigbo inertness kemịkalụ na okpomọkụ niile.

Nguzogide corrosion

Kemịkalụ inert na eguzogide oke okpomọkụ na eyi, ọ na-enye arụmọrụ dị elu ma e jiri ya tụnyere 99 alumina ceramics na ọ bara uru karịa.

Zirconia na-enwekwa ike tensile dị egwu, flexural na elasticity Njirimara na biocompatibility – na-eme ka ọ dị mma maka ọgwụgwọ ahụike dị ka ngbanwe hip. N'ihi mgbanwe toughening n'okpuru ọnọdụ nrụgide, Ihe irighiri zirconia na-agbanwe site na ụdị tetragonal metastable gaa n'ụdị monoclinic, na-enyere aka nso mgbawa nke ọma ka ọ na-abawanye ike mgbaji.

CeramTec (Biolox Delta) na-azụ ahịa ihe mejupụtara alumina-zirconia ebe zirconia na-akwụghị ọtọ ka dị na tetragonal iji jikwaa mgbanwe a wee nye mgbape n'ọnụ ọnụ na mgbawa mgbawa., imeziwanye ike nke matrix alumina. Enwere ike gbanwee ọdịnaya zirconia nke ihe site na nkwadebe ntụ ntụ na usoro densification.

Nguzogide okpomọkụ nke okpomọkụ

Zirconia agbakwunyere na matrix alumina bụ isi n'oge ị na-agbakọ nwere ike ịkwalite ike ya na ike ya nke ukwuu, na-eke ihe a maara dị ka ZTA (Zirconia aluminom siri ike), outperforming mgbe alumina seramiiki na ma n'ibu na eyi ngwa.

A na-ahụta alumina siri ike nke zirconia maka akụrụngwa ya pụrụ iche dị ka ike siri ike dị elu na ike owuwe., kemịkalụ inertness na ụlọ okpomọkụ, Ọnụego mgbasawanye ọkụ dị ala yana nguzogide ujo dị mma – ezigbo akụrụngwa maka egwe ọka akụrụngwa yana eyi akụkụ chọrọ usoro jụrụ oyi.

CeramTec na-ere ZTA a na-akpọ Biolox delta nke nwere matriks alumina nwere ihe Y-TZP gbasasịrị. (17 ibu/wt%) na strontium aluminate platelet (0.5 ibu/wt%), na-enye nchikota dị irè nke usoro mgbanwe tetragonal-to-monoclinic na usoro mgbawa iji nye ike siri ike., nke na-eme ka nke a dị mma maka usoro THA mbụ n'elu ebe femoral.

Ihe mkpuchi eletrik

Zirconia siri ike alumina nwere ike iguzogide ujo ọkụ na-enweghị mgbawa ma ọ bụ mebie n'okpuru mgbanwe mberede na okpomọkụ., Ekele maka ụmụ irighiri ihe alumina gbasasịrị gbasasịa n'ime matriks ya nke na-etinye ike na-ekpo ọkụ ma na-ebute nrụgide nrụgide na-egbochi mgbaji..

Alumina-zirconia seramiiki dị oke karịa ka ogbo zirconia dị ọcha, na-eme ka ọ dị mma maka ngwa mkpuchi ọkụ eletrik. Ọzọkwa, Mgbasa ọkụ ya dị ala karịa zirconia na-eme ka ọ dị mma maka akụkụ ndị chọrọ ka ọ dị jụụ.

Mgbanwe siri ike nke ihe mejupụtara Alumina-zirconia na-enye uru ndị ọzọ; Ebe a, Mkpụrụ ọka zirconia na matriks alumina na-enwe usoro metastable ebe ọka ha na-agbanwe site na tetragonal gaa na monoclinic., si otú a na-ebelata mgbawa na-akpata nchekasị site n'ịbawanye nguzogide megide abrasion na mmetụta. Alumina toughened zirconia na-emekarị site na mmeghachi omume pyrophoric metụtara Zirconium(IV) oxide octahydrate, Aluminom nitrate Nanohydrate Trietylamine na HNO3(Nitric acid); na-abawanye urughuru nha n'ihu enyemaka mgbasa nke metastable zirconia ọka.