Maximize Durability Nrog Zirconia Toughened Alumina Cheebtsam
ZTA ceramics muab superior tribological zog thaum piv nrog alumina ceramics li niaj zaus, ua rau lawv qhov kev xaiv zoo tshaj plaws rau cov cuab yeej txiav, bearings, cov twj tso kua mis thiab cov khoom siv tswj dej.
Hauv kev ntxhov siab, zirconia hais hloov los ntawm metastable tetragonal siv lead ua qauv mus rau monoclinic sawv daws yuav, tsim ntim nthuav dav uas compresses cov kab nrib pleb hauv alumina matrix thiab txhim kho pob txha toughness.
Hnav Resistance
Zirconia Toughened Alumina (ZTA) yog cov khoom siv ruaj khov heev. Nws tuaj yeem tiv taus kev puas tsuaj lossis kev sib txhuam tsis muaj kev puas tsuaj; ua rau nws yog ib qho khoom siv zoo heev rau kev txiav cov log. Tsis tas li ntawd xwb, ZTA tuaj yeem tiv taus qhov kub thiab txias yam tsis muaj kev puas tsuaj lossis degraded.
ZTA yog heev resistant rau tshuaj corrosion, ua rau nws yog ib qho kev xaiv zoo heev rau kev cog qoob loo kho mob. Biocompatible thiab muaj peev xwm tiv taus lub cev sib cuag, ZTA kuj boasts siab flexural zog – zoo meej rau daim ntaub ntawv hloov dua siab tshiab.
ZTA yog tsim los ntawm kev ntxhov siab vim kev hloov pauv ntawm cov nplua tetragonal zirconia hais rau hauv cov duab monoclinic.. Qhov no ua rau kom tawg toughness los ntawm nthuav qhov chaw nyob ib ncig ntawm cov kab nrib pleb. Xws li, ZTA ua pov thawj deb zog thiab ruaj khov dua li alumina rau hnav daim ntaub ntawv.
Corrosion Resistance
Zirconia Toughened Alumina (ZTA) yog ib qho kev tshaj lij ceramic khoom siv dav hauv kev lag luam rau nws lub zog, tawv, hnav tsis kam thiab corrosion kuj zog. ZTA pom cov ntawv thov thoob plaws ntau yam xws li tsheb thiab aerospace rau cov khoom xws li cov khoom siv cav, roj turbines thiab cov khoom siv kho tshuab thaum ua haujlwm ua cov khoom siv hauv cov twj, seals thiab txiav cov cuab yeej siv rau kev siv machining. Cov kev phais kho mob kuj tseem yuav siv cov khoom no vim nws cov biocompatibility.
Durability nyob rau hauv cov ntaub ntawv no yog los ntawm nws txoj kev ntxhov siab-induced transformation toughening txheej txheem, nyob rau hauv uas zirconia hais nyob rau hauv ib tug alumina matrix undergo transformation rau monoclinic lug los ntawm kev nyuaj siab inducing transformation toughening, pab kaw cov kab nrib pleb thiab nce pob txha toughness, yog li tiv thaiv nws tus kheej los ntawm kev puas tsuaj hauv ntau qhov chaw xws li phosphoric acid, sulfuric acid thiab dej distilled. Qhov no tso cai rau nws los tiv thaiv corrosion.
Siab zog
Kev sib xyaw alumina thiab zirconia ua rau muaj zog ntxiv thiab tawg toughness piv rau cov qauv alumina, ua ZTA ib qho kev xaiv zoo heev rau cov khoom uas raug cuam tshuam rau kev thauj khoom. Tsis tas li ntawd xwb, ZTA kuj boasts zoo tshuaj corrosion kuj.
ZTA boasts superior hardness thiab lub zog vim transformation ntawm tetragonal zirconia hais mus rau monoclinic crystals los ntawm kev ntxhov siab vim transformation los ntawm mechanical loading los yog kub fluctuations, thiab tom qab lub siab los ntawm monoclinic zirconia siv lead ua compressing ib alumina matrix, muab nws lub zog loj, durability, thiab thermal shock kuj.
Qhov no tshwj xeeb ceramic kuj boasts tsis tshua muaj siab dabtsi yog khoov zog thiab tsawg thermal expansion coefficient, ua kom nws zoo meej rau cov ntawv thov uas xav tau cov tshuab cua txias. Tsis tas li ntawd xwb, nws tsis kam mus rau corrosive tshuaj – suav nrog cov kua dej hauv lub cev – ua rau kev kho mob implants haum rau tso rau hauv tib neeg yam tsis muaj kev pheej hmoo ntawm degradation nyob rau lub sij hawm cia cov neeg mob tau txais kev zoo siab yam tsis muaj kev txhawj xeeb txog implant deterioration nyob rau hauv lub sij hawm..
Siab Toughness
ZTA ceramics txhim kho alumina lub zog los ntawm kev ntxhov siab vim kev hloov pauv ntawm zirconia hais rau hauv cov khoom zoo, Ua tiav ntawm sintering thiab kub isostatic nias (HIP). Nyob ntawm seb ntau npaum li cas zirconia muaj nyob rau hauv nws cov matrix, ZTA tej zaum yuav muaj cov khoom qis lossis siab tawv.
Clausen ua qauv qhia hauv 1976 hais tias alumina matrices muaj unstabilized zirconia tuaj yeem toughened los txhim kho cov khoom siv los ntawm kev suav nrog unstabilized zirconia crystals li finely dispersed metastable precipitates, xws li cov tsim los ntawm unstabilized zirconia crystals, los txhim kho cov khoom siv kho tshuab. Nws tau ua pov thawj qhov no los ntawm kev siv qhov tawg; Thaum cov kab nrib pleb txav mus rau pem hauv ntej los ntawm cov khoom siv thiab compressed nws cheeb tsam ua ntej ntawm lawv cov lus qhia lawv tuaj yeem hloov mus rau theem monoclinic thiab hloov mus rau nws yooj yim dua li qhov yuav tshwm sim..
Qhov no toughening mechanism nce flexural zog thiab tawg toughness ntawm alumina thaum ib txhij nce hardness, tsim cov khoom sib xyaw uas tsis sib xws haum rau cov ntawv thov uas xav tau siab hardness, tawv, tawg ua hauj lwm thiab txias yuav tsum tau xws li industrial cutters, milling hnav qhov chaw lossis cov khoom cua txias.