Fused Alumina Zirconia, Az-25, Az-40

zirconia alumina
Zirconia - corundum
ZA

Takaitaccen Bayani

Fused Alumina-Zirconia an samar da shi a cikin babban tanderun wutar lantarki mai zafi ta hanyar haɗa yashi na zirconium quartz da alumina. An kwatanta shi da wuya da tsari mai yawa, babban ƙarfi, kwanciyar hankali mai kyau na thermal. Ya dace da kera manyan ƙafafun niƙa don kwandishan karfe da ƙwanƙwasawa, kayan aikin rufi da fashewar dutse, da sauransu.

Hakanan ana amfani dashi azaman ƙari a cikin ci gaba da simintin gyare-gyare. Saboda tsananin taurinsa ana amfani da shi don samar da ƙarfin injina a cikin waɗannan guraben.

TUNTUBE YANZU

Ƙayyadaddun bayanai

Bbrand Spec	AZ-25 Fihirisa	AZ-25 Mahimmanci Na Musamman	AZ-40 Fihirisa	AZ-40 Mahimmanci Na Musamman
ZrO₂	23% -27%	24%	38% -42%	39%
Al₂O₃	72% min	74%	56% -60%	59%
SiO₂	0.8% max	0.5%	0.60% max	0.4%
Fe₂O₃	0.3% max	0.2%	0.3% max	0.15%
TiO₂	0.8% max	0.7%	0.50% max	0.5%
CaO	0.15% max	0.14%	0.15% max	0.12%
Girman gaskiya (g/cm³)	4.2 min	4.23	4.6 min	4.65
Launi	Grey ko Fresh launin toka		Grey ko Fresh launin toka

Tsarin Samar da Aikace-aikace

Fused Alumina--Zirconia an samar da shi a cikin tanderun wutar lantarki mai zafi ta hanyar haɗa yashi na zirconium quartz da alumina. An kwatanta shi da wuya da tsari mai yawa, babban ƙarfi, kwanciyar hankali mai kyau na thermal. Ya dace da kera manyan ƙafafun niƙa don kwandishan karfe da ƙwanƙwasawa, kayan aikin rufi da fashewar dutse, da sauransu.

Hakanan ana amfani dashi azaman ƙari a cikin ci gaba da simintin gyare-gyare. Saboda tsananin taurinsa ana amfani da shi don samar da ƙarfin injina a cikin waɗannan guraben.

Yttria-Tetragonal Zirconia Polycrystals (Y-TZP) da Alumina (Al2O3) sun jawo hankali sosai ga fasahar kayan da aka dasa saboda kyawawan abubuwan haɗin gwiwar su, irin su babban taurin, karyewar ƙarfi, da ƙarfi da ƙarfi, waɗannan halayen sun sanya su. abubuwa masu ban sha'awa don faɗuwar aikace-aikacen aikace-aikacen da ke rufe kewayon ilimin halittu inda ake amfani da shi akai-akai a aikace-aikacen haƙori kamar su kayan dasa shuki, gadoji, tushen tushe, da kambin yumbu. Bayan haka, ana amfani da su a cikin aikace-aikacen injiniya daban-daban ciki har da na'urori masu auna sigina na iskar oxygen, rufin shinge na thermal, kayan aikin yankan, masu haɗin fiber na gani, da ƙwayoyin mai mai ƙarfi. Ya kamata a lura cewa haɓakar kayan aikin injiniya na Y-TZP ana danganta shi da girman hatsi mai kyau tare da tetragonal zuwa canjin lokaci na monoclinic. Wannan canjin lokaci yana tare da haɓakar ƙara kusan 3-5% wanda ke haifar da hana yaduwar fasa kuma don haka yana haɓaka taurin kayan. Duk da haka, yana da mahimmanci a gane cewa wannan sauyi kuma na iya faruwa ba zato ba tsammani a ƙarƙashin wasu yanayi. Idan zirconia yana fuskantar ƙananan zafin jiki a cikin yanayi mai laushi tsakanin 100 ℃ da 300 ℃, wanda zai iya haifar da lalacewar zirconia, yana haifar da roughening da microcracking. Wannan sabon abu an san shi da hydrothermal tsufa ko lalata ƙarancin zafin jiki (Ltd) kuma an gano shi azaman mahimmancin ayyukan kayan aikin Zichonicis a cikin aikace-aikacen Orthoppedic

Masu bincike sun haɓaka abubuwa da yawa waɗanda aka haɗa alumina a cikin tsarin zirconia. Manufar wannan haɗin gwiwa shine don haɓaka juriya na LTD da kuma ba da damar keɓaɓɓun halaye na waɗannan yumbu don haɓaka kayan aikin injin tetragonal zirconia matrix A gefe guda, kasancewar alumina a cikin matrix yana taka muhimmiyar rawa wajen ƙirƙirar m tsarin da ke taimaka takura da zirconia barbashi. A lokacin aikin sanyaya daga zafin jiki na sintering, ƙwayar tetragonal zirconia na iya jujjuya canjin lokaci daga lokacin tetragonal zuwa lokaci na monoclinic. A cikin wannan mahallin, alumina yana hidima don kula da ƙwayar zirconia a cikin yanayin da za a iya daidaitawa, yana hana cikakken canji zuwa lokaci na monoclinic. Wannan kiyayewa na tetragonal yana ba da gudummawa ga ci gaban da aka gani a cikin taurin yumbu