zirconia toughened alumina ya tabbatar da ingantaccen kayan aikin injiniya idan aka kwatanta da zirconia monolithic, ciki har da taurin karaya da ƙarfin sassauƙa. Zaman lafiyar ZTA ya samo asali ne daga lokacin matrix ɗin sa wanda ke karewa da takurawa canjin ƙwayar zirconia tetragonal., yana taimaka masa jure lalacewa a ƙarƙashin in-vivo hydrothermal yanayi.
Ƙarfin Flexural
Ta ƙara zirconia zuwa yumbu alumina, zirconia toughened alumina an halicce shi. Wannan kayan yana fasalta ingantaccen ƙarfin sassauƙa da dorewar inji a cikin yanayin da ke buƙatar sa, sannan kuma yana tsayayya da lalata sinadarai gami da fallasa ruwan jiki.
zirconia toughened alumina na iya jure saurin saurin yanayi a cikin zafin jiki saboda barbashin sa na zirconia da suka tarwatse a cikin matrix alumina yana ɗaukar makamashin thermal da ƙirƙirar damuwa don hana fatattaka., sanya shi dacewa don amfani a aikace-aikacen masana'antu daban-daban kamar kayan aikin wuta da injunan injin tururi.
Wannan yumbu mai haɗe yana haɗa kyawawan halaye na duka alumina da zirconia don isar da ƙarin ƙarfi da juriya na thermal., tare da m taurin, ƙarfin sassauƙa, karaya tauri da sa juriya da ta zarce 99% tsantsar alumina wajen taurin, tauri da sa juriya.
Karya Tauri
Zirconia yana haɓaka karyewar yumburan alumina ta hanyar haɓakar canji. Lokacin buga, metastable yttrium-stabilised zirconia yana canzawa zuwa tsarin kristal monoclinic wanda ke haifar da matsananciyar damuwa wanda ke hana yaduwar fasa..
Zirconia toughened alumina abu ne mai mahimmanci don ƙirƙirar kayan aikin yankan saboda taurin sa, thermal kwanciyar hankali da juriya ga gogayya. Bugu da kari, mafi girman kayan aikin injinsa yana ba da gudummawa sosai ga karko da amincinsa.
ZTA da aka samar ta hanyar gelcasting yana da haɗin gwiwa na musamman na ƙarfin sassauƙa, karaya tauri, biocompatibility da zafi / lalata juriya wanda ya sa ya dace da tiyata maye gurbin hip. Ta hanyar tafiyar matakai na gelcasting kuma yana yiwuwa a daidaita taurin sa-karya taurin-ƙarfin ƙarfi ta hanyar canza matakan slurry mai ƙarfi., mold kauri ko sintering zafin jiki sigogi don kara sakamako.
Matsakaicin Matsala
zirconia toughened alumina abu yana alfahari da mafi girman ƙarfi da juriya, haka kuma na musamman dagewa don tallafawa nauyi mai nauyi ba tare da nakasu a karkashin matsin lamba ba. Bugu da kari, yana alfahari da kyakkyawan juriya na girgiza zafin zafi wanda ke ba shi damar jure jure yanayin zafi kwatsam ba tare da wahala ba..
Abubuwan da ke cikin zirconia sama da ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun tsufa suna haɓaka lalacewa ta hanyar microcracks da aka kirkira yayin sanyaya bayan sintering waɗanda ke aiki azaman hanyoyin da aka fi so don shigar ruwa cikin kayan yumbu., yana haifar da ƙananan ƙwayoyin cuta yayin sanyaya waɗanda ke aiki azaman hanyoyin da aka fi so don shigarwa da yaduwa cikinsa. Akasin haka, Lokacin da ke ƙasa da wannan kofa ɓangarorin zirconia suna fuskantar canji mai haifar da damuwa daga lokaci tetragonal zuwa lokaci na monoclinic wanda ke rage lalata tsufa..
Ƙarfin Ƙarfin Ƙarfi
Zirconia toughened alumina abu ne mai wuya kuma mai ɗorewa tare da kyakkyawan juriya na lalacewa da kaddarorin kwanciyar hankali na thermal, yin shi dacewa da abubuwan da ke buƙatar sanyaya. Bugu da kari, thermally barga saman kamar wannan samar da thermal iko da frictional juriya sanya su manufa kayan zabi.
Karkashin damuwa, ZTA tana jujjuya canjin lokaci daga tetragonal zuwa monoclinic wanda ke hana yaduwa kuma yana kara taurin karaya., amma wasu nazarin sun nuna cewa karuwar zirconia mara kyau yana haifar da raguwar ƙarfin ƙarfi.
ZTA yumbura yawanci ya ƙunshi 10%-20% zirconia, wanda ke ba da damar keɓance shi musamman don kowane aikace-aikacen. ZTA yana da jituwa, zafin jiki resistant, lalata-resistant, m isa jure matsa lamba, madadin farashi mai tsada ga yumbu na zirconia mai tsabta kuma yana iya jure yanayin zafi ba tare da lalacewa ba. Masu kera hatimin bawul galibi suna zaɓe shi saboda juriya-lalata da ƙarfin ɗaukar matsi – duk halayen da suka dace don aikace-aikacen hatimin bawul.
Ƙarfin Tasiri
zirconia toughened alumina yana da matukar juriya da lalata kuma yana da ƙarfin injin na musamman, sanya su dace da aikace-aikacen da ke buƙatar tauri da tauri lokaci guda. Bugu da kari, ZTA tana ba da tanadin farashi akan yumbun zirconia zalla.
Haɗa alumina da zirconia yana haifar da yumbu tare da ƙarfin sassauƙa mafi girma, karaya tauri, kuma sanya juriya fiye da tsantsar alumina. Yana iya jure manyan lodi da tasiri kuma galibi ana amfani dashi azaman haɓakawa akan daidaitaccen alumina a cikin ƙirar da ke buƙatar ƙarin fasali..
Canji mai ƙarfafawa ya haifar da ƙarin ƙarfin wannan; karkashin yanayin damuwa, Barbashi zirconia suna canzawa daga tetragonal zuwa siffar monoclinic kuma suna faɗaɗa, matsawa fasa a cikin matrix alumina kuma don haka yana haifar da ƙarfin sassauƙa fiye da YSZ (Hoto na 6c da d).
Juriya na Lalata
Haɗin yumbura na ZTA na alumina da zirconia yana ba da juriya mai inganci idan aka kwatanta da mai tsabta 99% kayan alumina kadai, kuma yana da mafi girman taurin, karaya tauri, ƙarfin sassauƙa, da taurin kaddarorin fiye da fafatawa a gasa.
ZTA yana fasalta fitattun lalacewa da juriyar abrasion da daidaituwar sinadarai, yin shi manufa domin masana'antu aikace-aikace bukatar high inji karko. Bugu da kari, Haɗin kayan yana alfahari da kyakkyawan juriya na girgiza zafin zafi yana ba da damar saurin canjin zafin jiki ba tare da fashewa ko fashe ba.
Barbashi na zirconia da aka ƙara zuwa matrix alumina yana ƙara ƙarfin karye ta ta hanyar ƙarfafawa., Wani sakamako da ya haifar ta hanyar ƙarfafa ƙwayoyin zirconia waɗanda ke canzawa daga tetragonal zuwa tsarin crystal na monoclinic lokacin da aka fallasa su zuwa damuwa mai matsawa., yana haifar da matsananciyar damuwa waɗanda ke hana yaduwar fasa kuma suna haɓaka taurin karaya sosai.
Juriya Shock Thermal
zirconia toughened alumina wani ci-gaba yumbu ne wanda ya haɗu da alumina da zirconia. Don ƙirƙirar ZTA, Zirconia an gabatar da shi a cikin babban matrix na alumina kafin a haɗa shi don ƙarin ƙarfi da juriya na zafin zafi akan tukwane na alumina na gargajiya.; haka kuma yana alfahari mafi girma taurin, ƙarfin sassauƙa, da yawa fiye da takwarorinsa.
Tsarin ƙarfafawa na ZTA ya haɗa da canjin lokaci mai haifar da damuwa daga tetragonal zuwa tsarin sifofin crystal na zirconia monoclinic., ƙara ƙarfi taurin karaya yayin da yake kare shi daga girgizar zafin jiki da lalata injina. zirconia toughened alumina yana da jituwa sosai kuma baya lalata da sauri, yin shi manufa domin bawul hatimi. Bugu da kari, Ƙarfin ƙarfinsa yana ba shi damar yin tsayayya da matsa lamba na jiki yadda ya kamata.