High-temperature Kurapa Maitiro eKushandiswa Akaoma Alloys

Kupisa kwepamusoro-kupisa kwema alloys kwakaoma kunoitwa mune yakanyatsogadzirirwa high-temperature yevira. Iyo tsvina alloys inoiswa pasi pepamusoro-tembiricha yekugadzirisa pamusoro pe1800 ℃ munzvimbo inodzivirira gasi. Munguva iyi, cobalt inoshandiswa sesimbi inosungirirwa inonyunguduka uye inofashaira, zvichiita kuti alloy iparare uye huwandu hwayo huwedzere zvakanyanya. Iyo alloy chimiro inova porous uye huchi-senge, ichiita iyo yakaoma alloy zvakanyanya nyore kutyora uye kugadzirisa. Munguva yekupisa-kupisa kwepamusoro, huwandu hukuru hwechikamu chemvura hunoonekwa mualloy, ichiwedzera kupararira kwemaatomu uye kuwedzera kunyungudika uye kunaya kweWC. Mbeu dzeWC dzinokura nekukurumidza, dzichiwedzera kubva pa1 kusvika pa2 μm kusvika kumakumi kana kunyange mazana emamicrometer. Uyezve, panguva yekudzokororwa kweWC, kukanganisa muchimiro chezviyo kunobviswa, uye chimiro chekristaro cheWC chinova chakazara. Panguva imwecheteyo, chiyero chemamwe masimbi, kusvibiswa kusiri kwesimbi, uye kusvibiswa kunokuvadza kwakatanga kunowanikwa mualloy kunobviswa.

Kukura kwezviyo zvealloy kunowedzera nokukurumidza nekuwedzera kwekushisa kwekushisa kwepamusoro. Zvisinei, kana kupisa kwehutano kunoramba kuripo, kuwedzerwa kwenguva yekurapa hakuna chinhu chakakosha pakuwedzera kwekukura kwezviyo zvealloy. Saizi yezviyo yealloy inoshanduka nekupisa kwekurapa uye kubata nguva mushure mekupisa kwakanyanya. Chinokosha chekudzora maitiro ekurapa kwepamusoro-soro ndeyekudzora kupisa kwehutano. Asi tembiricha yekurapa haisi iyo yakanyanya kunaka. Kana tembiricha yekurapa yakanyanya kukwirira, inotanga kukanganisa hupenyu hwebasa remhando yepamusoro-yekupisa; chechipiri, ichaita kuti chikamu chakawandisa chemvura mu alloy, yakawedzera volatilization yeCo phase, kuparara kweWC skeleton, uye kuita kuti alloy ibatane ne crucible, zvichiita kuti zvive zvakaoma kuchenesa uye kuputsa. Kazhinji, iyo yepamusoro-tembiricha yekurapa maitiro inodzorwa kutenderedza 2000 ℃, uye zvinokurudzirwa kubata kwemaawa maviri.