Ngwakọta Alumina Zirconia, Az-25, Az-40

aluminom zirconia
Zirconia-corundum
ZA

Nkọwa Dị Mkpirikpi

A na-emepụta Alumina–Zirconia n'ime ọkụ eletriki dị elu site na ijikọta ájá zirconium quartz na alumina. A na-eji usoro siri ike na nke siri ike mara ya, ike dị elu, na ezigbo nkwụsi ike okpomọkụ. Ọ dabara adaba maka imepụta wiil igwe nnukwu maka nhazi ígwè na ihe mkpuchi ígwè, ngwaọrụ mkpuchi na ịgbapụta nkume, wdg.

A na-ejikwa ya dị ka ihe mgbakwunye na ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe ghara ịdịgide. N'ihi ike ya dị elu, a na-eji ya enye ike Mechanical na ihe ndị a na-eme ka ihe na-eme ka ihe ghara ịdị mma.

KPỌỌ UGBU A

Nkọwapụta

Bbrand Nkọwapụta	AZ-25 Ndepụta Ndekọ	AZ-25 Uru nkịtị	AZ-40 Ndepụta Ndekọ	AZ-40 Uru nkịtị
ZrO₂	23%-27%	Pasentị iri abụọ na anọ	38%-42%	Pasentị iri atọ na itoolu
Al₂O₃	72% nkeji	Pasentị iri asaa na anọ	56%-60%	Pasentị iri ise na itoolu
SiO2₂	0.8% kacha	0.5%	0.60% kacha	0.4%
Fe₂O₃	0.3% kachasị	0.2%	0.3% kachasị	0.15%
TiO₂	0.8% kacha	0.7%	0.50% kacha	0.5%
CaO	0.15% kachasị	0.14%	0.15% kachasị	0.12%
Ezigbo njupụta (g/cm)³)	Nkeji 4.2	4.23	Nkeji 4.6	4.65
Agba	Isi awọ ma ọ bụ isi awọ ọhụrụ		Isi awọ ma ọ bụ isi awọ ọhụrụ

Usoro Mmepụta na Ngwa

Alumina a gwakọtara agwakọta -- A na-emepụta Zirconia n'ime ọkụ eletriki dị elu site na ijikọta ájá zirconium quartz na alumina. A na-eji usoro siri ike na nke siri ike mara ya, ike dị elu, na ezigbo nkwụsi ike okpomọkụ. Ọ dabara adaba maka imepụta wiil igwe nnukwu maka nhazi ígwè na ihe mkpuchi ígwè, ngwaọrụ mkpuchi na ịgbapụta nkume, wdg.

Yttria-Tetragonal Zirconia Polycrystals (Y-TZP) na Alumina (Al2O3) adọtala mmasị dị ukwuu maka teknụzụ ihe ndị e tinyere n'ime ihe n'ihi njikọta ha dị mma nke ihe onwunwe, dị ka ike siri ike, ike mgbawa, na ike na isi ike dị elu. Àgwà ndị a emeela ka ha bụrụ ihe mara mma maka ọtụtụ ngwa ndị na-ekpuchi oke ọgwụ ebe a na-ejikarị ya eme ihe n'ọgwụ ezé dịka ihe mkpuchi ihe e tinyere n'ime ihe, àkwà mmiri, ogwe mgbọrọgwụ, na okpueze seramiiki. E wezụga nke ahụ, a na-ejikwa ha na ngwa injinia dị iche iche gụnyere ihe mmetụta oxygen, mkpuchi ihe mgbochi okpomọkụ, ngwaọrụ ịkpụ, njikọ eriri anya, na mkpụrụ ndụ mmanụ siri ike oxide. Ọ dị mkpa ịmara na mmezi nke ihe onwunwe igwe nke Y-TZP bụ n'ihi nha ọka ya dị mma na mgbanwe usoro tetragonal na monoclinic. Mgbanwe usoro a na-esokwa mmụba olu nke ihe dị ka 3-5% na-ebute igbochi mgbasa mgbawa ma si otú a na-eme ka ike ihe dịkwuo mma. Agbanyeghị, ọ dị mkpa ịghọta na mgbanwe a nwekwara ike ime n'onwe ya n'okpuru ọnọdụ ụfọdụ. Ọ bụrụ na zirconia ekpughere ya n'ebe okpomọkụ dị ala n'ebe iru mmiri dị n'etiti 100 ℃ na 300 ℃, nke nwere ike ibute mmebi nke zirconia, na-ebute mgbakasị ahụ na obere mgbawa. A maara ihe a dị ka hydrothermal aging ma ọ bụ Low-Temperature Degradation (LTD) ma achọpụtala ya dị ka ihe na-akpata mbelata arụmọrụ nke ihe ndị dị na zirconia na ngwa orthopedic.

Ndị nchọpụta emepụtala ọtụtụ ihe mejupụtara nke alumina na-etinye n'ime usoro zirconia. Ebumnuche nke ntinye a bụ ime ka iguzogide LTD dịkwuo elu ma jiri njirimara pụrụ iche nke seramiiki ndị a mee ihe iji melite akụrụngwa nke tetragonal zirconia matrix. N'aka nke ọzọ, ọnụnọ nke alumina na matrix na-arụ ọrụ dị oke mkpa n'ịmepụta usoro siri ike nke na-enyere aka igbochi ihe ndị ahụ zirconia. N'oge usoro oyi site na okpomọkụ sintering, mkpụrụ tetragonal zirconia nwere ike ịgbanwe usoro site na usoro tetragonal gaa na usoro monoclinic. N'ọnọdụ a, alumina na-eje ozi iji nọgide na-enwe mkpụrụ zirconia na ọnọdụ metastable, na-egbochi mgbanwe zuru oke na usoro monoclinic. Nchekwa nke usoro tetragonal na-enye aka na mmụba a hụrụ na ike nke ihe seramiiki.