Binciko kaddarorin yumburan silikon carbide mai ƙura

A musamman Properties na porous silicon carbide ceramicssu ne yafi saboda ta musamman porous tsarin, wanda ya ƙunshi porosity, pore size da rarraba, da siffar ramuka. Sabili da haka, ya zama dole don daidaita porosity, girman pore da rarrabawa, da siffar pore ta hanyar shiri don samun tsarin da ake so. Don haka tsarin shirye-shiryensa ya kasance tushen bincike.

Abubuwan tukwane na SiC na yumbu

1.Pore ​​Properties

①Porosity

Porosity shine kaso na ƙarar da aka shagaltar da pores a cikin wani abu mara kyau zuwa jimillar ƙarar kayan da ba a iya gani ba (ciki har da buɗaɗɗen pores, raƙuman buɗe ido da rufaffiyar pores iri 3). Bincike ya nuna cewa aikin kayan porous ya dogara da porosity.

② Kwayoyin halittar jiki

Ilimin halittar jiki na Pore yana nufin ilimin halittar jiki na pores a cikin yumbu mara kyau. Lokacin da pores suna daidaita pores, aikin gaba ɗaya na kayan shine isotropic; amma lokacin da pores suna taguwar ko lebur, kamar ta hanyar carbonization na itace shirya ta silicon dauki sintering porous SiC yumbura, da pore tsarin ne wani shugabanci.

③Pore ​​diamita da rarraba

Pore ​​diamita na kasa da 2nm don microporous kayan, pore size tsakanin 2 ~ 50nm ga mesoporous kayan, size fiye da 20nm ga macroporous kayan. Ta hanyar girman pore da rarraba mafi girman tasirin aikin, ciki har da rashin daidaituwa, ƙimar ƙima da aikin tacewa.

2.Kayan aikin injiniya

Porous SiC yumburakayan sun gagare kuma kaddarorin injin su galibi ana siffanta su da lankwasawa ko ƙarfin matsawa. Porosity da hanyar shirye-shirye suna da babban tasiri a kan kayan aikin injiniya na yumbu na SiC mai ƙarfi.

3.Thermal Conductivity

Porosity da pore ilimin halittar jiki suna da babban tasiri a kan thermal conductivity na porous yumbu. Don tukwane mai ƙyalli tare da rarraba ramuka iri ɗaya, ƙimar zafin jiki yana raguwa sannu a hankali yayin da adadin pore ya ƙaru. Duk da haka, saboda nau'in nau'in nau'in nau'in nau'in nau'in nau'in yumbu mai laushi wanda aka shirya ta hanyoyi daban-daban, akwai manyan bambance-bambance, don haka tsarin canja wurin zafi yana daidai da m da kuma hadaddun.

Porous SiC yumburasuna da kyawawan kaddarorin jiki na SiC kanta, kamar girman girman girma, babban yanki na musamman, babban taurin, juriya na lalata, juriya mai zafin jiki, haɓakar yanayin zafi, ƙarancin haɓakar haɓakar thermal, da juriya ga girgiza thermal, a saman gamsuwar yanayin porous na yumbu.