Kugadzirisa 5% kusvika 10% (chikamu chehuremu) Al2O3 muchikamu chematrix chezvidhinha zvekabhoni/graphite zveblast furnace (carbon blocks) zvinovandudza zvakanyanya kuramba kwesimbi yakanyungudutswa uye ndiko kushandiswa kwezvidhinha zvekabhoni zvealuminium mukugadzira simbi. Chechipiri, zvidhinha zvekabhoni zvealuminium zvinoshandiswawo mukugadzirisa simbi yakanyungudutswa uye mupombi dzemvura.
Zvidhinha zvekabhoni zvealuminium zvekugadzirisa simbi yakanyungudutswa
Zvidhinha zvealuminium silicon carbide zvinonyanya kushandiswa mumidziyo yekutakura simbi yakanyungudutswa senge matangi esimbi yakanyungudutswa. Zvisinei, kana rudzi urwu rwezvinhu zvinoramba kushandiswa ruchishandiswa mumatangi makuru esimbi yakanyungudutswa uye musanganiswa wesimbi, uye zvikasangana nemamiriro ekupisa nekutonhorera akaoma, zvinogona kutsemuka, zvichikonzera kutsemuka kwechimiro. Pamusoro pezvo, nekuti zvidhinha zveAl2O3-SiC-C zvinoshandiswa mumatangi makuru esimbi inopisa uye musanganiswa wesimbi zvinowanzova nekabhoni ye15% uye thermal conductivity yakakwira se17~21W/(m·K) (800℃), pane kudzikira kwekushisa kwesimbi yakanyungudutswa uye dambudziko rekukanganisa masimbi ematangi makuru esimbi yakanyungudutswa uye mota dzinosanganisa. Nzira yekudzivisa ndeyekuwana thermal conductivity yakaderera nekubvisa SiC, chikamu chinotungamira kupisa zvakanyanya, uku uchideredza graphite uye uchinatsa graphite.
Kuburikidza nekutsvaga kwekutanga, zvakagumiswa kuti:
(1) Kana huwandu hwegrafiti (chikamu chikuru) muzvidhinha zvearuminiyamu kabhoni huri pasi pe10%, chimiro chayo chehurongwa chinosanganisira Al2O3 inoumba matrix inoenderera mberi, uye kabhoni inozadzwa mu matrix muchimiro chenyeredzi. Panguva ino, thermal conductivity λ yebrinha rearuminiyamu kabhoni inogona kuverengerwa nefomura (1)
Mufomura, λa ndiyo thermal conductivity yeAl2O3; Vc ndiyo vhoriyamu fraction yegraphite. Izvi zvinoratidza kuti thermal conductivity yezvidhinha zvealuminium carbon haina chekuita nethermal conductivity yegraphite.
(2) Kana girafiti yanatswa, kupisa kwebhiri rearuminiyamu kabhoni hakunyanyi kutsamira pazvidimbu zvegirafiti.
(3) Pazvidhinha zvearuminiyamu-kabhoni zvisina kabhoni yakawanda, kana girafiti yanatswa, matrix yakamanikana inogona kuumbwa, iyo inogona kuwedzera kuramba kwengura kwezvidhinha zvearuminiyamu-kabhoni.
Izvi zvinoratidza kuti zvidhinha zvearuminiyamu zvine kabhoni shoma zvinogona kuenderana nemamiriro ekushanda kwematangi makuru esimbi inopisa uye mota dzinosanganisa simbi musystem yekugadzira simbi.
Nguva yekutumira: Kukadzi-27-2024
