ʻO ke kaomi ʻana i ka lewa i hoʻopaʻa ʻia i ka silikona carbide he carbide non-metallic me ke silikona a me ka carbon covalent bond, 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. ʻO ka hoʻololi ʻana o ka silicon carbide me ka hoʻolālā 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 ʻakika hui ʻia a i ʻole phosphoric acid o ka waikawa hydrogen concentrated a me ka waikawa nitric. Hoʻokaʻawale ka alkali i hoʻoheheʻe ʻia i loko o kahi lewa. Hoʻokaʻawale ʻia ia i ka carbide silicon synthetic a me ka carbide silicon maoli. ʻO ka carbide silicon maoli, i kapa ʻia ʻo carbonite, ʻike nui ʻia i ka kimberlite a me ka amphibolite lua pele, akā liʻiliʻi kona nui a ʻaʻohe waiwai eli.
ʻO ke kaomi ʻana i ka lewa ʻenehana i hoʻopaʻa ʻia i ka silicon carbide he hui ʻana 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 466,480 MPa ka helu elastic. ʻO ka ikaika tensile he 171.5MPa. ʻO ka ikaika compressive ʻo 1029MPa. ʻO ka helu hoʻonui laina (25 ~ 1000) 5.010 ~ 6/. ʻO ka hoʻoili wela (20) he 59w/(mk). ʻO ka paʻa kemika, ʻo ka paila i loko o HCl, H2SO4, HF ʻaʻole e ʻā.
E like me ka hoʻohana like ʻole, 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 ʻo Refractory silicon carbide i: (1) advanced refractory data black silicon carbide, ʻo kona ʻike SiC ua like like me ka wili silika carbide. (2) ʻO ka ʻikepili refractory lua ʻeleʻele carbide silika, 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 hoʻohana 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 Silicon 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 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 silicon green i hoʻohana ʻia no nā mea hoʻomehana uila e like me ka carbide silicon green i hoʻohana ʻia no ka wili.
(2) ʻO ka carbide silikoni no ka mea hopu i nā koi hana uila kūikawā, 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 aupuni. Ma Kina, hoʻohana nui ʻia ka carbide silicon green ma ke ʻano he abrasive. Hoʻohana ʻia ka carbide silika 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. Hoʻohana nui ʻia ka wili i hana ʻia i ka carbide silicon green 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 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 ka hoʻopili 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: Iune-16-2023