Ipleyiti yerabha yerabha ye-ZTA (Zirconia Toughened Alumina) eyenziwe nge-ceramic yimveliso ehlanganisiweyo engagugiyo eyenzelwe ngokukodwa iimeko zokuguguleka kakhulu. Le mveliso idibanisa iiseramikhi ze-ZTA (ezihlala zenziwe nge-75%-80% Al₂O₃ kunye ne-20%-25% ZrO₂) kunye nerabha yendalo ene-elasticity ephezulu kunye nepleyiti yokuxhasa yentsimbi ngenkqubo ye-vulcanization ephucukileyo, eneebholiti ezifakwe kwangaphambili ukuze kube lula ukuzifakela. Ifilosofi yoyilo oluphambili isebenzisa ukumelana okuphezulu kokuguguleka kweeseramikhi ukumelana nokuguguleka kwezinto ngelixa umaleko werabha ufunxa amandla okuguguleka, ukufezekisa isiphumo sokusebenzisana phakathi kokuguguleka kunye nokuqina kokuguguleka.
Ngenxa yendlela yokuqinisa i-zirconia yokuguqula isigaba, i-ZTA ibonisa ukuqina okuphezulu kokuqhekeka kunye nokumelana nokuguguleka kune-alumina ceramics eqhelekileyo. Uphando lubonisa ukuba ii-ZTA composites ezine-20%-25% zirconia zibonisa ukusebenza kakuhle phantsi kweemeko ezinzima zokuguguleka. Iinkcukacha zobugcisa eziqhelekileyo ziquka: ubuninzi bobuninzi ≥4.1-4.3 g/cm³, ubunzima beRockwell (HRA) ≥90, ubunzima bokuqhekeka (KIC) ≥3.70 MPa·m1/2, kunye namandla okuguquguquka >350 MPa. Kwiimvavanyo zokuguguleka ezomileyo, izinga lokuguguleka elithile lee-composites ze-ZTA linokuba phantsi kwe-10⁻⁹ mm³/(N·m), liphumelela kakhulu kwi-single-phase alumina okanye i-zirconia ceramics.
Inkqubo yokuvelisa ibandakanya ukulawulwa ngokuchanekileyo kwe-hot vulcanization ukuqinisekisa amandla aphezulu e-bond kumgca we-ceramic-raber. Ngokwemigangatho yoshishino, amandla e-shear bond phakathi kwe-ceramic kunye ne-raber kufuneka adlule kwi-3.5 MPa, kunye nomaleko werabha ngokwawo obonisa amandla okutsalwa kwe-12-15 MPa kunye nokwandiswa xa kuqhekeka okungaphezulu kwe-250%-400%. Isakhiwo esidibeneyo se-vulcanized sithintela ngokufanelekileyo iithayile ze-ceramic ekuqhekekeni xa kutshatyalaliswa, ngelixa ukuguquguquka kwerabha kuchitha uxinzelelo oluxineneyo, kukhusela umaleko we-ceramic ekuqhekekeni okubuthathaka. Ipleyiti yomqolo wentsimbi iqinisekisa ukuqina kwesakhiwo xa ifakelwe kwiigobolondo zezixhobo.
Iipleyiti zerabha ze-ceramic ze-ZTA zerabha ezivundisiweyoZisetyenziswa kakhulu kwiichute zokudlulisa, iihopper, kunye neebhini zeenkqubo zokuphatha izinto ezinkulu apho zombini impembelelo kunye nokukrazula kuxhaphake khona. Xa kuthelekiswa nee-liners ze-alumina ceramic ezicocekileyo, i-ZTA inikezela ngobomi benkonzo obude obuphindwe ka-2.5 phantsi kweemeko zokukrazula, ngelixa ixabiso layo lihlala liphantsi kakhulu kune-zirconia ceramics ezicocekileyo, zibonelela ngokusebenza kakuhle kweendleko. Kwizicelo zokuphatha izinto ezinkulu, ukuphakama okuphezulu, okanye isantya sokuhamba okuphezulu, iipleyiti zerabha ze-ZTA zerabha zimela esinye sezisombululo zokukhusela ukukrazula ezinokuthenjwa ezikhoyo.
Ixesha leposi: Februwari-24-2026