Kunezindlela eziningana eziyinhloko zokuthuthukisa ukuqina kwe-alumina ceramics:
1. Ukuqinisa i-Zirconia: Lena yindlela yokuqinisa esetshenziswa kakhulu. Uma inani elifanele le-zirconia (ZrO2) lingezwa ku-alumina, ukuqina kwayo kungathuthukiswa kakhulu. Umphumela wokuqinisa uvela kakhulu ezindleleni ezifana nokulungiswa kwe-matrix yezinhlamvu ze-alumina, ukuqina kokuguqulwa kwesigaba se-zirconia, ukuqina kwe-microcrack, kanye nokuqondisa kwe-crack kanye ne-bifurcation.
2. Ama-whiskers kanye nokuqina kwefayibha: Ama-whiskers angamakristalu e-ceramic angawodwa anesilinganiso esiphakeme, futhi ubude befayibha bude kaningana kune-ceramic whiskers. Wonke angangezwa kuma-alumina ceramics njengokuqinisa ukuqina. Ukwengezwa kwama-whiskers noma ama-fiber kungandisa ubuso bokuqhekeka, okungukuthi, kwandise isiteshi sokusabalala kwama-crack. Lapho ukuqhekeka kudlulela kuma-fibers (ama-whiskers), kuzokhishwa, kukhishwe, futhi kuqhekeke ama-fibers (ama-whiskers), ngaleyo ndlela kudle amandla okuqhekeka futhi kuthuthukiswe ukuqina kwe-ceramic.
3. Ukuqinisa izinhlayiya: Ukwengeza izinhlayiya ezine-modulus ephezulu enwebekayo (njenge-SiC, i-TiC, i-TiN, njll.) ezintweni ze-alumina kungabangela imifantu ukuba iphambuke futhi ihlukane lapho izinto ziphuka, kudle amandla okuphuka, ngaleyo ndlela kuthuthukiswe ukuqina. Nakuba umphumela wokuqinisa wezinhlayiya ungemuhle njengowezintshebe nemicu, ukuxuba okufanayo kwezinto zokusetshenziswa kanye nokuqina kwe-sintering kulula futhi kulula kunezinhlanganisela ze-fiber kanye ne-whisker.
4. Ukuziqinisa kwe-Alumina: Ama-ceramic alungiselelwe nge-nanoscale alumina powder abonisa ukuqina okuphezulu kakhulu emazingeni okushisa aphansi. Le nanomaterial ingathuthukisa ukuma kanye nezakhiwo zomngcele wezinhlamvu ze-ceramic, ngaleyo ndlela yandise ukuqina kwazo.
5. Ngenisa isigaba sesibili: Ngenisa isigaba sesibili ku-matrix ye-alumina ceramics ukuze igcwalise imingcele yezinhlamvu ze-alumina, okuwusizo ekuvimbeleni ukusabalala kwemifantu ngaleyo ndlela kuthuthukiswe ukuqina kokuqhekeka kwe-ceramics. Isibonelo, i-zirconia-toughened alumina isebenzisa le ndlela.
6. Ukwengeza amakristalu embewu ye-alumina: Ukwengezwa kwamakristalu embewu ye-alumina kungakhuthaza ukukhula kwezinhlamvu zekristalu ezi-anisotropic futhi kwakha izinhlamvu zekristalu eziqhekekile noma ezi-columnar, ezifana nama-whiskers, angabangela ukuphambuka kokuqhekeka, ukudonsa okusanhlamvu, kanye nokuqina kokuxhumana kwe-ceramics.
Lezi zindlela zingasetshenziswa zodwa noma zihlanganiswe ndawonye ukuthuthukisa ukuqina kwe-alumina ceramics. Ukukhetha okukhethekile kuncike ekusebenzeni okudingekayo, izindleko kanye nezimo zokusetshenziswa.Izitsha zobumba ze-alumina eziqinile ze-ZTAkusuka kumkhiqizi weChemshun Ceramics kungahlangabezana ngempumelelo nesidingo sakho sokuqina okuphezulu
Isikhathi sokuthunyelwe: Meyi-10-2024