Ukulinganiswa Kokuminyana
Idatha esuka ku-pycnometer yezilinganiso zokuminyana kusampula elimsulwa (i-Brass ne-Zirconia) kanye namasampuli owonakele agcinwe ku-300 °C no-600 °C.
Amasampuli e-ceramic agcine isilinganiso sokuminyana esingaguquki samasampuli acwebile futhi awonakele (300 °C kanye no-600 °C).Lokhu kuziphatha kulindelekile yi-Zirconia ngenxa yokuhlangana kwe-electrovalent kwezinto ezibolekayo ekuzinzeni kwayo kwamakhemikhali nesakhiwo.
Izinto ezisekelwe kuZirconia zibhekwa njengamanye ama-oxide azinzile futhi ziye zaboniswa ukuthi zibola kancane kancane emazingeni okushisa aphakeme asondele ku-1700 ° C.Ngakho-ke, ukuxhaphaza isikhungo se-ceramic ngezicelo zokushisa okuphezulu kungaba yisinqumo esihlakaniphile, nakuba ukwakheka kwe-sintered.
Iskena i-Electron Microscopy
■ Umfanekiso 3
Uhlangothi lwesobunxele lubonisa amasampula ensimbi acwebile kanye no-600 °C kanti uhlangothi lwesokudla lubonisa i-ceramic pristine kanye no-600 °C.
Umfanekiso wesithathu ubonisa isithombe esinokucaca okuphezulu kwamasampuli acwebile futhi agxilile acwebile nawonakele.Njengoba kungabonakala, abukho ubufakazi bokucekelwa phansi kwamasampula e-ceramic (izithombe ezingakwesokudla).Amasampula anesakhiwo somzimba esifanayo esiboleka ekuzinzeni kwesampula ye-ceramic ezingeni lokushisa eliphezulu.Ngakolunye uhlangothi sibona uguquko oludlulele ku-morphology yangaphezulu kumasampula ethusi awonakele.Ingaphezulu lesampula yethusi lonakalisiwe libonisa i-oxidation enzima.Ukwakheka komzimba kongqimba lwe-oxide okungenzeka kube nomthelela ekushintsheni kokuminyana kwesampula ye-thebrass.