Na-enyocha njirimara nke ceramik silicon carbide porous

Njirimara pụrụ iche nke porous ceramics silicon carbidebụ tumadi n'ihi ya pụrụ iche porous Ọdịdị, nke nwere porosity, pore size na nkesa, na udi nke oghere. Ya mere, ọ dị mkpa iji dozie porosity ya, nha pore na nkesa ya, na ọdịdị nke pore site na usoro nkwadebe iji nweta nhazi nke porous chọrọ. Ya mere, usoro nkwadebe ya abụrụla ebe nyocha.

Njirimara nke ceramik SiC porous

1.Njirimara pore

①Porosity

Porosity bụ pasent nke olu nke pores na-etinye n'ime ihe na-eme ka ọ dị elu ruo na mkpokọta nke ihe ndị ahụ porous (gụnyere oghere oghere, oghere oghere ọkara na oghere mechiri emechi nke ụdị 3). Nnyocha na-egosi na arụmọrụ nke ihe ndị nwere porous na-adabere na porosity.

② Ọkpụkpụ morphology

Ọkpụkpụ morphology na-ezo aka n'ọdịdị nke pores na seramiki porous. Mgbe pores na-equiaxed pores, n'ozuzu arụmọrụ nke ihe bụ isotropic; ma mgbe pores na-eipu ma ọ bụ ewepụghị, dị ka site carbonization nke osisi kwadebere site silicon mmeghachi omume sintering porous SiC seramiiki, pore Ọdịdị bụ a ụfọdụ ntụziaka.

③Dayameta pore na nkesa

Dayameta pore nke na-erughị 2nm maka ihe microporous, nha nha n'etiti 2 ~ 50nm maka ihe mesoporous, nha karịa 20nm maka ihe macroporous. Site n'ogo pore na nkesa nke mmetụta dị ukwuu nke arụmọrụ, gụnyere permeability, ọnụego permeability na arụmọrụ filtration.

2.Ngwa igwe

Seramiiki SiC nwere oghereihe na-agbaji agbaji na ihe eji arụ ọrụ ha na-ejikarị agbaji ma ọ bụ ike mkpakọ mara. Porosity na usoro nkwadebe nwere nnukwu mmetụta na akụrụngwa nke ceramik SiC porous.

3.Nrụpụta okpomọkụ

Porosity na pore morphology nwere nnukwu mmetụta na thermal conductivity nke ceramics porous. Maka ceramics porous nwere nkesa pore otu, thermal conductivity na-ebelata nke nta nke nta ka ọnụ ọgụgụ pore na-abawanye. Otú ọ dị, n'ihi morphology pore nke porous seramiiki ihe ndị a kwadebere site na usoro dị iche iche, e nwere nnukwu ọdịiche dị iche iche, ya mere usoro nnyefe ọkụ na-agbanwe agbanwe na mgbagwoju anya.

ceramik SiC nwere ogherenwere ezigbo anụ ahụ nke SiC n'onwe ya, dị ka nnukwu njupụta dị elu, mpaghara elu dị elu, isi ike dị elu, nguzogide corrosion, nguzogide dị elu, okpomọkụ dị elu, ọnụ ọgụgụ dị ala nke mgbasawanye ọkụ, na iguzogide ujo ọkụ, n'elu. afọ ojuju nke porous ọdịdị nke ceramik.