[Ka wehewehe hōʻuluʻulu manaʻo] Ua hoʻopaʻa ʻia ke kaomi eakalapona kalaponahe carbide non-metallic i hui pū ʻia me ka silikoni a me ke kalapona covalent paʻa, a ʻo kona paʻakikī ka lua ma mua o ka daimana a me ka boron carbide.ʻO ke kumu hoʻohālike kemika ʻo SiC.ʻO nā kristal kala ʻole, ʻulaʻula a ʻeleʻele ke nānā aku i ka wā e hoʻoheheʻe ʻia ai ʻole i loko o nā haumia.
Ua hoʻopaʻa ʻia ke kaomi lewakalapona kalaponahe carbide non-metallic me ke silikona a me ke kalapona covalent paʻa, a ʻo kona paʻakikī ka lua ma mua o ke daimana a me ka boron carbide.ʻO ke kumu hoʻohālike kemika ʻo SiC.ʻO nā kristal kala ʻole, ʻulaʻula a ʻeleʻele ke nānā aku i ka wā e hoʻoheheʻe ʻia ai ʻole i loko o nā haumia.Ka deformation okalapona kalaponame ka hale daimana i kapa ʻia ʻo emery.ʻO ka paʻakikī o ka emery kokoke i ke daimana, maikaʻi ka thermal stability, paʻa i ka hydroxy acid aqueous solution a me ka sulfuric acid concentrated, a paʻa ʻole i ka waikawa hui ʻia a i ʻole phosphoric acid o ka waikawa hydrogen a me ka waikawa nitric.Hoʻokaʻawale ka alkali i hoʻoheheʻe ʻia i loko o kahi ea.Ua mahele ia i synthetickalapona kalaponaa me ka carbide silika maoli.Loaʻa ka carbide silicon maoli, i kapa ʻia ʻo carbonite, i ka kimberlite a me ka amphibolite lua pele, akā liʻiliʻi kona nui a ʻaʻohe waiwai eli.
Hoʻopili ʻia ke kaomi lewa ʻoihanakalapona kalaponahe hui ʻia o -SiC a me -SiC a hele mai i ʻelua kala: ʻeleʻele a me ka ʻōmaʻomaʻo.ʻAʻole waihoʻoluʻu ka carbide silika maʻemaʻe, ʻeleʻele, ʻōmaʻomaʻo, uliuli, melemele nā mea haumia.Hexagonal a me cubic palena palaoa, ke aniani he papa, kolamu hui.Glass luster, density 3.17-3.47G/CM3, Morse paakiki 9.2, ka microscope hoi ma 30380~ 33320MPa hehee wahi: atmospheric 2050 hoomaka e differentiate, ho'ōla lewa 2600 hoomaka e differentiate.ʻO ka coefficient elastic he 466, 480MPa.ʻO ka ikaika tensile he 171.5MPa.ʻO ka ikaika compressive ʻo 1029MPa.ʻO ka helu hoʻonui laina ʻo (25~ 1000) 5.010 ~ 6/, a ʻo ka conductivity thermal (20) ʻo 59w/(mk).ʻO ka paʻa kemika, ʻaʻole e hoʻopau ʻia ka paila i ka HCI, H2SO4, HF.
Wahi a nā hoʻohana ʻokoʻa, ua māhele ʻia ke kaomi ʻana o ka atmospheric sintered silicon carbide i abrasive, refractory data, deoxidizer, uila silicon carbide a pēlā aku.ʻAʻole emi ka SiC ma lalo o 98%.Hoʻokaʻawale ʻia nā refractory me ka carbide silika i: (1) ʻikepili refractory kiʻekiʻe ʻeleʻele silikon carbide, ʻo kona ʻike SiC ua like like me ka wili silika carbide.(2) ʻO ka ʻikepili refractory lua ʻeleʻele silika carbide, ʻoi aku ka SiC ma mua o 90%.(3) ʻO ka ʻike o ka carbide silicon ʻeleʻele a me SiC i nā refractory haʻahaʻa haʻahaʻa ʻaʻole i emi iho ma mua o 83%.ʻO ka ʻike o ka silicon carbide a me SiC i hoʻohana ʻia i ka deoxidizer e koi maʻamau ma luna o 90%.Eia nō naʻe, hiki ke hoʻohana ʻia ka mea hoʻoheheʻe ʻana i ka umu ahi graphitization carbon, silicon carbide ʻoi aku ma mua o 45% o ka mālama ʻana e like me ka steelmaking deoxidizer.ʻO ka silikoni carbide no ka mea hoʻoheheʻe deoxidizing he ʻelua ʻano o ke ʻano o ka pauka a me ka poloka molding.ʻO ka pauka deoxidizer ʻeleʻele silikon carbide maʻamau ka nui o ka nui o 4 ~ 0.5 mm a me 0.5 ~ 0.1 mm.Loaʻa i ʻelua ʻāpana nui ka carbide silikon uila.(1) ʻO ka carbide silika ʻōmaʻomaʻo i hoʻohana ʻia no nā mea hoʻomehana uila he ʻano like ia me ka carbide silicon ʻōmaʻomaʻo i hoʻohana ʻia no ka wili ʻana.(2) ʻO ka carbide silikoni no ka mea hopu i nā koi hana uila kūikawā, he ʻokoʻa ia mai ka carbide silicon ʻeleʻele no ka wili ʻana i ka ʻikepili refractory.
Ka hoʻohana ʻana i ka carbide silika i hoʻopaʻa ʻia i ka lewa
Loaʻa nā hana kūikawā e like me ke kūpaʻa wela kiʻekiʻe, ka pale ʻana i ka wela, ka pale ʻana i ke ahi, ka pale ʻana i ka radiation, ka uila maikaʻi a me ka thermal conductivity, etc., a ua hoʻohana nui ʻia i nā keʻena like ʻole o ka hoʻokele waiwai.Ma Kina, hoʻohana nui ʻia ka carbide silicon green ma ke ʻano he abrasive.Hoʻohana ʻia ka carbide silicon ʻeleʻele e hana i nā pōhaku wili, i hoʻohana pinepine ʻia e ʻoki a wili i nā mea me ka ikaika haʻahaʻa haʻahaʻa, e like me ke aniani, ka seramika, ka pōhaku, refractories, a no ka wili ʻana i nā ʻāpana hao a me nā mea metala non-ferrous.ʻO ka wili i hana ʻia i ka carbide silicon green e hoʻohana nui ʻia no ka wili ʻana i ka carbide cemented, titanium alloy, aniani optical, a no ka wili ʻana i ka cylinder liner a me nā mea hana kila kiʻekiʻe.Hoʻohana wale ʻia nā abrasives cubic silicon carbide no ka wili ultra-precision o nā bearings liʻiliʻi.Hiki ke hoʻomaikaʻi maikaʻi ʻia ka pale ʻana o nā impeller turbine ma ke kau ʻana i ka pauka SIC ma luna o lākou e ka electroplating.Me ka hoʻohana ʻana i ke kaomi ʻenekini e hoʻokuke i ka wili cubic SiC200 a me W28 micro-powder i ka paia cylinder o ka ʻenekini hoʻopau i loko, hiki ke hoʻonui ʻia ke ola cylinder ma mua o ka pālua.
Ka manawa hoʻouna: Oct-11-2023