Kana silicon carbide crystal inokura, "nharaunda" yekukura kwemukati pakati peaxial centre yekristaro uye kumucheto kwakasiyana, kuitira kuti kristall stress iri pamucheto iwedzere, uye crystal edge iri nyore kubudisa "kukanganisa kwakakwana" nekuda kwesimba re graphite stop ring "carbon", maitiro ekugadzirisa dambudziko rekumucheto kwe9 kana kuwedzera nzvimbo yakakosha 5 (inonyanya kukosha nharaunda) .
Sezvo hurema hwakakura hwakadai se "microtubules" uye "inclusions" zvishoma nezvishoma zvichidzorwa neindasitiri, inonetsa silicon carbide makristasi kuti "akure nekukurumidza, kureba uye gobvu, uye kukura", mupendero "hurema hwakakwana" hwakanyanya kuoneka, uye nekuwedzera kwedhayamita uye ukobvu hwesilicon carbide makristasi akashongedzwa neakawanda dhayamita, dhayamita inorema. ukobvu.
Iko kushandiswa kwetantalum carbide TaC coating ndeyekugadzirisa dambudziko rekumucheto uye kuvandudza kunaka kwekristaro kukura, inova imwe yepakati tekinoroji nzira ye "kukura nekukurumidza, kukura gobvu nekukura". Kukurudzira kusimudzira tekinoroji yeindasitiri uye kugadzirisa kutsamira kwe "import" yezvinhu zvakakosha, Hengpu yakagadzirisa kugadzirisa tekinoroji yetantalum carbide coating (CVD) uye yakasvika padanho repamusoro repasi rose.
Tantalum carbide TaC coating, kubva pakuona kwekuona haina kuoma, ne sintering, CVD nedzimwe nzira dziri nyore kuwana. Sintering nzira, kushandiswa tantalum carbide upfu kana precursor, achiwedzera anoshingaira zvinhu (kazhinji simbi) uye bonding mumiririri (kazhinji refu cheni polymer), coated kusvika pamusoro graphite substrate sintered panguva yakakwirira tembiricha. Nenzira yeCVD, TaCl5+H2+CH4 yakaiswa pamusoro pegraphite matrix pa900-1500℃.
Nekudaro, iwo akakosha ma paramita akadai sekristaro kutariswa kwetantalum carbide deposition, yunifomu yefirimu ukobvu, kuburitswa kwekushushikana pakati pejasi uye graphite matrix, kutsemuka kwepasi, nezvimwewo, zvinonetsa zvakanyanya. Kunyanya mune sic crystal yekukura nharaunda, yakagadzikana hupenyu hwesevhisi ndiyo yakakosha parameter, ndiyo yakanyanya kuoma.
Nguva yekutumira: Jul-21-2023