Njengohlobo lwezixhobo zeseramikhi, i-zirconium inamandla aphezulu, ilukhuni kakhulu, iyamelana nokuguguleka kakuhle, iyamelana ne-asidi kunye ne-alkali, iyamelana nobushushu obuphezulu kunye nezinye iimpawu ezintle. Ukongeza ekusetyenzisweni kakhulu kwicandelo lemizi-mveliso, ngophuhliso olunamandla lweshishini le-denture kwiminyaka yakutshanje, i-zirconia ceramics ibe zezona zinto zinokwenzeka kwaye itsale ingqalelo yabaphandi abaninzi.
Indlela yokuhluza
Indlela yendabuko yokutshiza umzimba kukufudumeza umzimba ngokusebenzisa imitha yobushushu, ukuqhuba ubushushu, ukujikeleza kobushushu, ukuze ubushushu busuke kumphezulu we-zirconia buye ngaphakathi, kodwa ukuhanjiswa kobushushu be-zirconia kubi kakhulu kunokwe-alumina kunye nezinye izinto ze-ceramic. Ukuze kuthintelwe ukuqhekeka okubangelwa kuxinzelelo lobushushu, isantya sokufudumeza sendabuko sicotha kwaye ixesha lide, nto leyo eyenza umjikelo wokuvelisa we-zirconia ube mde kwaye iindleko zokuvelisa ziphezulu. Kwiminyaka yakutshanje, ukuphucula itekhnoloji yokucubungula ye-zirconia, ukunciphisa ixesha lokucubungula, ukunciphisa iindleko zokuvelisa, kunye nokubonelela ngezixhobo ze-ceramic ze-zirconia zamazinyo ezisebenza kakuhle ziye zaba yinto ephambili kuphando, kwaye ukutshiza nge-microwave ngokungathandabuzekiyo yindlela ethembisayo yokutshiza.
Kufunyaniswe ukuba ukutshiza nge-microwave kunye nokutshiza ngoxinzelelo lomoya akunamahluko abalulekileyo kwimpembelelo yokungangeni kakuhle kwe-semi-permeability kunye nokungagugi. Isizathu kukuba uxinano lwe-zirconia olufunyenwe ngokutshiza nge-microwave lufana nolo lokutshiza nge-microwave oluqhelekileyo, kwaye zombini zitshiza kakhulu, kodwa iingenelo zokutshiza nge-microwave ziqondo lobushushu eliphantsi lokutshiza, isantya esikhawulezayo kunye nexesha elifutshane lokutshiza. Nangona kunjalo, izinga lokunyuka kwamaqondo obushushu lokutshiza ngoxinzelelo lomoya licotha, ixesha lokutshiza lide, kwaye lonke ixesha lokutshiza limalunga neeyure ezi-6-11. Xa kuthelekiswa nokutshiza ngoxinzelelo oluqhelekileyo, ukutshiza nge-microwave yindlela entsha yokutshiza, enezibonelelo zexesha elifutshane lokutshiza, ukusebenza kakuhle kunye nokonga amandla, kwaye inokuphucula isakhiwo se-microstructure se-ceramics.
Ezinye iingcali zikholelwa ukuba i-zirconia emva kokusikwa kwe-microwave inokugcina isigaba se-tequartet esizinzileyo ngakumbi, mhlawumbi ngenxa yokuba ukufudumeza ngokukhawuleza kwe-microwave kunokufezekisa uxinano olukhawulezileyo lwezinto kubushushu obuphantsi, ubungakanani bengqolowa buncinci kwaye bufana ngakumbi kunobo bokusikwa koxinzelelo oluqhelekileyo, bungaphantsi kobungakanani botshintsho olubalulekileyo lwesigaba se-t-ZrO2, olulungele ukugcina okuninzi kangangoko kunokwenzeka kwimeko yokusikwa kwe-metastable kubushushu begumbi, ukuphucula amandla kunye nokuqina kwezinto ze-ceramic.
Inkqubo yokucola kabini
Iiceramics ze-zirconia ezisinki ezixineneyo zinokucutshungulwa kuphela ngezixhobo zokusika i-emery ngenxa yobunzima obuphezulu kunye namandla, kwaye iindleko zokucubungula ziphezulu kwaye ixesha lide. Ukuze kusonjululwe ezi ngxaki zingasentla, ngamanye amaxesha iiceramics ze-zirconia ziya kusetyenziswa inkqubo yokusinki kabini, emva kokwenziwa komzimba we-ceramic kunye nokusinki kokuqala, i-CAD/CAM amplification machining ibe yimo oyifunayo, ize emva koko isinki ibe kubushushu bokugqibela bokusinki ukwenza izinto zibe nkulu ngokupheleleyo.
Kufunyaniswe ukuba iinkqubo ezimbini zokusila ziya kutshintsha i-sintering kinetics yeeseramikhi ze-zirconia, kwaye ziya kuba nefuthe elithile kuxinano lwe-sintering, iimpawu zoomatshini kunye nesakhiwo se-microstructure yeeseramikhi ze-zirconia. Iimpawu zoomatshini zeeseramikhi ze-zirconia ezisinwe xa sele zixinene zingcono kunezo zisinwe kabini. Amandla okugoba kwe-biaxial kunye nokuqina kokuqhekeka kweeseramikhi ze-zirconia ezisinwe xa sele zixinene ziphezulu kunezo zisinwe kabini. Indlela yokuqhekeka kweeseramikhi ze-zirconia eziphambili zisinwe kabini, kwaye ukuqhekeka kuthe tye. Indlela yokuqhekeka kweeseramikhi ze-zirconia ezisinwe kabini ikakhulu kukuqhekeka kwe-intergranular, kwaye umkhwa wokuqhekeka unzima ngakumbi. Iimpawu zendlela yokuqhekeka edibeneyo zingcono kunendlela yokuqhekeka ye-intergranular elula.
Umshini wokutshiza
I-Zirconia kufuneka itshiswe kwindawo engenamanzi, kwinkqubo yokukhupha i-sintering iya kuvelisa inani elikhulu lamaqamza, kwaye kwindawo engenamanzi, amaqamza kulula ukuwakhupha kwimeko enyibilikisiweyo yomzimba we-porcelain, aphucule uxinano lwe-zirconia, ngaloo ndlela andise ukutyibilika kwe-semi-permeability kunye neempawu zoomatshini ze-zirconia.
Izinga lokufudumeza
Kwinkqubo yokusila i-zirconia, ukuze kufunyanwe ukusebenza kakuhle kunye neziphumo ezilindelekileyo, kufuneka kusetyenziswe izinga lokufudumeza eliphantsi. Izinga eliphezulu lokufudumeza lenza ubushushu bangaphakathi be-zirconia bungalingani xa bufikelela kubushushu bokugqibela bokusila, nto leyo ekhokelela ekubonakaleni kwemifantu kunye nokwenziwa kwee-pores. Iziphumo zibonisa ukuba ngokwanda kwezinga lokufudumeza, ixesha lokukristala leekristale ze-zirconia liyafinyezwa, igesi phakathi kweekristale ayinakukhutshwa, kwaye i-porosity ngaphakathi kweekristale ze-zirconia iyanda kancinci. Ngokunyuka kwezinga lokufudumeza, inani elincinci lesigaba sekristale se-monoclinic liqala ukubakho kwisigaba se-tetragonal se-zirconia, esiya kuchaphazela iimpawu zoomatshini. Kwangaxeshanye, ngokwanda kwezinga lokufudumeza, iinkozo ziya kuba yi-polarized, oko kukuthi, ukuhlala kunye kweenkozo ezinkulu nezincinci kulula. Izinga lokufudumeza elicothayo linceda ekwakhiweni kweenkozo ezifanayo ngakumbi, nto leyo enyusa ukungakwazi kokungena kwe-zirconia.
Ixesha lokuthumela: Agasti-15-2023