Qhov tsis zoo tshaj plaws ntawmsilicon carbideyog tias nws nyuaj rau sinter!
Silicon nitride kim dua!
Qhov kev hloov pauv theem thiab cov nyhuv tawv ntawm zirconia tsis ruaj khov thiab qee zaum ua tau zoo. Thaum qhov teeb meem no raug kov yeej, tsis yog zirconia xwb, tag nrho cov teb ceramic yuav muaj kev tawg!
Alumina muaj ntau dua thiab pheej yig dua, thiab nws tiv taus kub zoo.
Zirconia muaj kev hnav zoo dua li alumina thiab kub dua, tab sis nws qhov kev tiv thaiv thermal poob siab phem dua li alumina.
Silicon nitride muaj cov khoom zoo xws li kev hnav tsis kam thiab kev poob siab thermal, tab sis qhov kub thiab txias siv qis dua ob qho tib si. Qhov kim tshaj plaws.
Alumina ceramics yog cov khoom siv ceramic uas siv thaum ub. Tus nqi pheej yig, kev ua haujlwm ruaj khov thiab cov khoom lag luam sib txawv. Lub khw yog qhov loj tshaj plaws thiab loj tshaj plaws alumina, vim li cas? Piv rau ob qho kawg thiab koj yuav nkag siab.
Feem ntau yog piv rau qhov ua tau zoo thiab tus nqi. Tom qab ntawd nws pheej yig dua los ntawm kev lag luam.
Hais txog tus nqi, alumina yog qhov pheej yig tshaj plaws, thiab cov txheej txheem ua cov hmoov av kuj tseem paub tab heev. Ob qho tom kawg muaj qhov tsis zoo pom tseeb hauv qhov no, uas kuj yog ib qho ntawm cov teeb meem uas txwv tsis pub txoj kev loj hlob ntawm ob qho tom kawg.
Hais txog kev ua tau zoo, cov khoom siv kho tshuab xws li lub zog thiab toughness ntawm silicon nitride thiab zirconia zoo dua li cov ntawm alumina. Nws zoo li tias qhov kev ua tau zoo ntawm tus nqi yog qhov tsim nyog, tab sis qhov tseeb muaj ntau yam teeb meem.
Los ntawm qhov pom ntawm zirconia, nws muaj kev tawv siab vim muaj cov stabilizers, tab sis nws qhov kev tawv siab yog lub sijhawm-sensitive. Piv txwv li, tom qab lub cuab yeej zirconia tso rau hauv huab cua rau ib lub sijhawm, nws yuav poob kev ruaj khov thiab kev ua tau zoo yuav poob loj heev lossis txawm tias tawg! !! !! Ntxiv mus, tsis muaj theem metastable ntawm qhov kub siab, yog li tsis muaj kev tawv siab. Yog li ntawd, kev siv qhov kub siab thiab chav tsev kub tuaj yeem txwv tsis pub txoj kev loj hlob ntawm zirconia. Nws yuav tsum tau hais tias nws yog qhov me tshaj plaws ntawm peb lub khw.
Hais txog silicon nitride, nws kuj tau ua ib qho ceramic nrov hauv ob xyoo dhau los, tab sis nws cov txheej txheem npaj khoom tiav kuj nyuaj dua li alumina, uas zoo dua li zirconia, tab sis nws tseem tsis zoo li alumina.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-26-2019