I-Silicon carbide (i-SiC) ibonisa ukunxiba okugqwesileyo kunye nokuxhathisa ukubola ngenxa yeempawu zayo ezizodwa kunye neekhemikhali.
Ngokubhekiselele kukumelana nokunxiba, ubunzima be-Mohs be-silicon carbide bunokufikelela kwi-9.5, okwesibini kuphela kwidayimane kunye ne-boron nitride. Ukumelana kwayo nokunxiba kufana namaxesha angama-266 entsimbi ye-manganese kunye namaxesha angama-1741 entsimbi ye-chromium ephezulu.
Ngokubhekiselele kwi-corrosion resistance, i-silicon carbide inozinzo oluphezulu kakhulu lweekhemikhali kwaye ibonisa ukuxhathisa okugqwesileyo kwii-asidi ezomeleleyo, iialkali, kunye nezisombululo zetyuwa. Ngeli xesha, i-silicon carbide ikwanazo ukumelana nokugqwesa okuphezulu kwisinyithi esinyibilikisiweyo njenge-aluminiyam kunye ne-zinc, kwaye iqhele ukusetyenziswa kwii-crucibles kunye nokubumba kwishishini le-metallurgical.
Okwangoku, i-silicon carbide idityaniswe nesakhiwo esine-superhard kunye ne-inertness yayo yeekhemikhali isetyenziswe ngokubanzi kumashishini afana nemigodi, isinyithi, kunye neekhemikhali, ibe yinto efanelekileyo yokukhetha phantsi kweemeko zokusebenza ezigqithisileyo.
| impahla | ukunxiba ukumelana | ukumelana nomhlwa | ukusebenza kobushushu obuphezulu | Ezoqoqosho (ixesha elide) |
| I-silicon carbide | Iphezulu kakhulu | Yomelele kakhulu | Kugqwesileyo (((1600℃) | Phezulu |
| Iiseramikhi zealumina | Phezulu | Yomelele | Umndilili (((1200℃) | Phakathi |
| Ingxubevange yesinyithi | Phakathi | Ibuthathaka (ifuna ukwaleka) | Ubuthathaka (utyekele kwi-oxidation) | Ubuthathaka |
Ibhloko ye-silicon ye-carbide yokunxibaluluhlu olubalulekileyo kwiimveliso ze-silicon carbide.Iipropati ezingenakunqandwa kunye ne-corrosion-resistant ye-silicon carbide yenza ukuba isetyenziswe ngokubanzi kwizixhobo zokusila ezifana nezitshisi zemigodi kunye neebhola zebhola, ukunciphisa ukutshintshwa kwezixhobo rhoqo ezibangelwa ukuguga kwaye ngaloo ndlela zinciphisa iindleko zokugcinwa komatshini.
Oku kulandelayo luthelekiso phakathi kweebhloko ze-silicon carbide ezinganyangekiyo kunye nezinye iibhloko zemveli zokunxiba:
| Ukuqina kunye noKuthwala ukuNxibelela | Ibhloko ye-silicon ye-carbide yokunxiba | Izinto zemveli |
| Ukuqina kunye noKuthwala ukuNxibelela | Ubunzima be-Mohs 9.5, ukuxhathisa okunamandla kakhulu (ubomi bunyuke ngamaxesha angama-5-10) | Intsimbi ephezulu yechromium inobulukhuni obuphantsi (HRC 60~65), kunye neeseramikhi zealumina zithande ukuqhekeka. |
| Ukumelana nokubola | Ukumelana neeasidi ezinamandla kunye nealkali | Izinyithi zithande ukubola, ngelixa i-alumina inokumelana neasidi ephakathi |
| Uzinzo oluphezulu lobushushu | Ukumelana nobushushu be-1600 ℃, akukho oxidizing kumaqondo aphezulu | Isinyithi sityekele ekuguqukeni kumaqondo aphezulu, ngelixa i-alumina inokumelana nobushushu obuyi-1200 ℃ kuphela. |
| I-Thermal conductivity | 120 W / m · K, ukutshatyalaliswa kobushushu okukhawulezayo, ukuxhathisa ukutshatyalaliswa kwe-thermal | Isinyithi sinokuhanjiswa kakuhle kwe-thermal kodwa siqhelene ne-oxidation, ngelixa iiseramics eziqhelekileyo zine-thermal conductivity engalunganga. |
| Ezoqoqosho | Ubomi obude kunye nexabiso eliphantsi lilonke | Iintsimbi zifuna ukutshintshwa rhoqo, iiseramics zibuthathaka, kwaye iindleko zexesha elide ziphezulu |
Ixesha lokuposa: Mar-18-2025