Kana kristalo yesilicon carbide ichikura, "nzvimbo" yekukura pakati pepakati pekristaro nemucheto yakasiyana, zvekuti kushushikana kwekristaro pamucheto kunowedzera, uye mupendero wekristaro zviri nyore kugadzira "zvikanganiso zvakakwana" nekuda kwesimba re "carbon stop ring", maitiro ekugadzirisa dambudziko remupendero kana kuwedzera nzvimbo inoshanda yepakati (inopfuura 95%) inyaya yakakosha yehunyanzvi.
Sezvo zvikanganiso zvikuru zvakaita se "microtubules" uye "inclusions" zvichidzorwa zvishoma nezvishoma neindasitiri, zvichikurudzira makristaro esilicon carbide kuti "akure nekukurumidza, akareba uye akobvu, uye akure", "zvikanganiso zvakakwana" zvinoonekwa zvakanyanya, uye nekuwedzera kwedhayamita uye ukobvu hwemakristaro esilicon carbide, "zvikanganiso zvakakwana" zvinowedzerwa nedhayamita sikweya uye ukobvu.
Kushandiswa kweTantalum Carbide TaC coating kugadzirisa dambudziko remupendero uye kuvandudza kunaka kwekukura kwekristaro, inova imwe yenzira huru dzehunyanzvi "dzekukura nekukurumidza, kukura kwakakora uye kukura". Kuti ikurudzire kuvandudzwa kwetekinoroji yeindasitiri uye kugadzirisa kuvimba "kwezvinhu zvinounzwa" nezvinhu zvakakosha, Hengpu yakagadzirisa tekinoroji yeTantalum Carbide Coating (CVD) uye yakasvika padanho repamusoro repasi rose.
Kuputira Tantalum carbide TaC, kubva pakuona kwekuita hakusi kwakaoma, nekugadzira sintering, CVD nedzimwe nzira dziri nyore kuwana. Nzira yekugadzira sintering, kushandisa tantalum carbide powder kana precursor, kuwedzera zvinhu zvinoshanda (kazhinji simbi) uye bonding agent (kazhinji ketani refu polymer), zvakaputirwa pamusoro pe graphite substrate zvakapiswa pakupisa kwakanyanya. Nekushandisa nzira yeCVD, TaCl5+H2+CH4 yakaiswa pamusoro pe graphite matrix pa 900-1500℃.
Zvisinei, zvinhu zvakakosha zvakaita sekutariswa kwekristaro kwetantalum carbide deposition, ukobvu hwefirimu hwakafanana, kusunungurwa kwekumanikidzwa pakati pekuputira uye graphite matrix, kuputika kwepamusoro, nezvimwewo, zvinonetsa zvikuru. Kunyanya munzvimbo yekukura kwekristaro, hupenyu hwakagadzikana hwebasa ndiyo parameter huru, ndiyo inonyanya kuoma.
Nguva yekutumira: Chikunguru-21-2023