Silicon carbide ine simba remhepo isimbi isina simbi ine silicon necarbon covalent bond, uye kuoma kwayo kuri kwechipiri kune diamond neboron carbide. Fomura yemakemikari iyi iSiC. Makristaro asina ruvara, anotaridzika bhuruu nedema kana akaomeswa kana aine tsvina. Kushanduka kwesilicon carbide ine chimiro chedhaimani kunowanzonzi emery. Kuoma kweemery kuri pedyo nedhaimani, kugadzikana kwakanaka kwekupisa, kugadzikana kwehydroxy acid aqueous solution uye concentrated sulfuric acid, uye kusagadzikana kune mixed acid kana phosphoric acid ye concentrated hydrogen acid ne nitric acid. Alkalis inonyunguduka mumhepo isina chinhu inosiyana. Yakakamurwa kuita synthetic silicon carbide uye natural silicon carbide. Natural silicon carbide, inozivikanwa se carbonite, inonyanya kuwanikwa mu kimberlite ne volcanic amphibolite, asi huwandu hwayo hudiki uye haina kukosha kwekuchera.
Industrial atmospheric pressure sintered silicon carbide musanganiswa we -SiC ne -SiC uye inouya nemavara maviri: dema negirini. Silicon carbide yakachena haina ruvara, ine tsvina nhema, girini, bhuruu, yero. Miganhu yehexagonal necubic grain, crystal iri plate, compound column. Girazi rinopenya, density 3.17 ~ 3.47G/CM3, Morse hardness 9.2, maikorosikopu iri pa30380 ~ 33320MPa melting point: atmospheric 2050 yakatanga kusiyanisa, recovery atmosphere 2600 yakatanga kusiyanisa. Elastic coefficient i466,480 MPa. Simba rekudhonza i171.5MPa. Simba rekudzvanya i1029MPa. Linear expansion coefficient i (25 ~ 1000)5.010 ~ 6/. The thermal conductivity (20) i59w/(mk). Chemical stability, inofashaira muHCl, H2SO4, HF haizoparari.
Zvichienderana nemashandisirwo akasiyana-siyana, silicon carbide inomanikidzwa nemhepo inokamurwa kuita data rebrasive, refractory, deoxidizer, electrical silicon carbide nezvimwewo. SiC ye abrasive silicon carbide haifanirwe kunge iri pasi pe98%. Silicon carbide inokamurwa kuita: (1) advanced refractory data black silicon carbide, SiC yayo yakafanana chaizvo ne grinding silicon carbide. (2) Secondary refractory data black silicon carbide, SiC yehuwandu inopfuura 90%. (3) black silicon carbide neSiC yemhando yepasi haifanirwe kunge iri pasi pe83%. Silicon carbide neSiC inoshandiswa mu deoxidizer inowanzo fanirwa kunge iri pamusoro pe90%. Zvisinei, carbon industrial graphitization furnace insulation, silicon carbide yehuwandu inopfuura 45% yekurapa inogonawo kushandiswa se deoxidizer yekugadzira simbi. Silicon carbide ye deoxidizing agent ine mhando mbiri dzehupfu hwechimiro uye molding block. Upfu hwe deoxidizer nhema silicon carbide hunowanzova nehukuru hwe 4 ~ 0.5 mm uye 0.5 ~ 0.1 mm.
Silicon carbide yemagetsi ine zvikamu zviviri zvikuru
(1) Kabhidhi yegirini yesilicon inoshandiswa pakupisa zvinhu zvemagetsi yakafanana nekabhidhi yegirini yesilicon inoshandiswa pakugaya.
(2) Silicon carbide yekubata ine zvinodiwa zvemagetsi zvakakosha, izvo zvakasiyana nesilicon carbide nhema yekukuya data risingashande.
Kushandiswa kwesilicon carbide inodzvinyirirwa nemhepo
Zvigadzirwa zvesilicon carbide zvine simba rekupisa kwakanyanya, kusakara, kupisa, kupisa, kupisa, mwaranzi, kufambisa magetsi zvakanaka, nezvimwewo, uye zvave zvichishandiswa zvakanyanya mumadhipatimendi akasiyana-siyana ehupfumi hwenyika. MuChina, green silicon carbide inonyanya kushandiswa sechinhu chinokwenya. Black silicon carbide inoshandiswa kugadzira matombo ekukuya, ayo anowanzo shandiswa kucheka nekukuya zvinhu zvine simba shoma rekusunga, zvakaita segirazi, ceramics, matombo, refractories, uye zvakare pakukuya zvikamu zvesimbi zvakakandwa nezvinhu zvisina ferrous metal. Kukuya kwakagadzirwa negreen silicon carbide kunonyanya kushandiswa pakukuya cemented carbide, titanium alloy, optical glass, uye zvakare pakukuya cylinder liner nezvishandiso zvesimbi zvinomhanya zvakanyanya. Cubic silicon carbide abrasives inongoshandiswa chete pakukuya mabearings madiki nemazvo. Kukunda kusakara kweturbine impellers kunogona kuvandudzwa zvikuru nekuisa SIC powder pairi ne electroplating. Uchishandisa kumanikidzwa kwemuchina kusundira cubic SiC200 mill neW28 micro-poda kumadziro esirinda yeinjini yekupisa mukati, hupenyu hwesirinda hunogona kupetwa kaviri.
Nguva yekutumira: Chikumi-16-2023