Kuenzanisa kwezvinhu zvesilicon carbide ceramics uye alumina ceramics

Sic ceramics haingove neakanakisa mamechani zvivakwa pakudziya kwekamuri, senge yakakwira yekukotama simba, yakanakisa oxidation kuramba, yakanaka corrosion resistance, high wear resistance uye yakaderera friction coefficient, asi zvakare ine yakanakisa michina zvivakwa pakupisa kwepamusoro (simba, kukambaira kuramba, etc.) pakati pezvinhu zvinozivikanwa zveceramic. Kupisa kudzvanya sintering, kusatsikirira sintering, kupisa isostatic kudzvanya sintering zvinhu, hunhu hukuru hwesilicon carbide kusimba kwekushisa, zvakajairwa ceramic zvinhu pa1200 ~ 1400 madhigirii Celsius simba richaderedzwa zvakanyanya, uye silicon carbide pa1400 madhigirii Celsius kukotama simba. ichiri kuchengetedzwa pamwero wepamusoro we500 ~ 600MPa, saka tembiricha yekushanda inogona kusvika 1600 degrees Celsius; Silicon carbide plate texture yakaoma uye brittle, yekuwedzera coefficient idiki, inotonhora uye inopisa kurwisa, haisi nyore deformation. Silicon carbide ndiyo yakaomesesa, saka maceramic akagadzirwa nesilicon carbide ndiwo akareruka.

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Alumina ceramic imhando yealumina (Al2O3) semuviri mukuru weceramic zvinhu, inoshandiswa mumafirimu akakora akabatanidzwa maseketi. Alumina ceramics ine yakanaka conductivity, mechanical simba uye yakakwirira tembiricha kuramba. Zvinofanira kuonekwa kuti ultrasonic washing inodiwa. Kuramba kwayo kupfeka ndeye 266 nguva yesimbi yemanganese uye 171.5 nguva yeyakakwira chromium cast iron. Alumina ceramic rudzi rwemhando yepamusoro inodzivirira zvinhu, iyo inowanzoshandiswa kugadzira ceramic insulating sheet, insulating ring uye zvimwe zvikamu. Alumina ceramics inogona kumira tembiricha yakakwira kusvika 1750 ℃ ​​(alumina yemukati inodarika 99%).

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Nguva yekutumira: Feb-14-2023
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