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Alumina Ceramic mphete
Ziwalo za ceramic pa kutentha kwa firiji ndi insulator, chifukwa cha kutetezedwa kwakukulu kotero kuti zingagwiritsidwe ntchito pazida zotetezera, zokhala ndi malo osungunuka kwambiri, makhalidwe apamwamba otentha, zimapanga zipangizo zachitsulo pa kutentha kwakukulu kosavuta oxidation, kufooka kosavuta kwa kufooka.Ndipo chifukwa chakuti zinthuzo zilibe maginito, sizimamwa fumbi, pamwamba pake sizovuta kugwa.
