Izici zezinto zokufudumeza ezivame ukusetshenziswa ezithandweni zikagesi ezishisa kakhulu:

I-Molybdenum: Ivamise ukusetshenziswa esithandweni se-vacuum sintering esingu-1600°C, ukuvuthwa kwesivinini kukhuphukela ku-1800°C ngaphansi kwe-vacuum, futhi ukuvuthuluka kuba buthakathaka emkhathini ovikelayo i-hydrogen ngenxa yezici zengcindezi, futhi ingasetshenziswa kufika ku-2000°C. ;

I-Tungsten: Ngokuvamile isetshenziswa esithandweni se-vacuum sintering ku-2300 ° C, i-volatilization iyashesha lapho i-vacuum ingu-2400 ° C, ukuvuthwa kuyancipha emkhathini ovikelayo we-hydrogen ngenxa yezici zengcindezi, futhi ingasetshenziswa ku-2500 ° C);

I-Tantalum: Ivamise ukusetshenziswa esithandweni se-vacuum sintering ku-2200°C. Ngokungafani ne-tungsten ne-molybdenum, i-tantalum ayikwazi ukusebenza emkhathini oqukethe i-hydrogen ne-nitrogen. Inzuzo yayo ukuthi ukusebenza kwayo kwemishini nokusebenza kwe-welding kungcono kunaleyo ye-tungsten ne-molybdenum;

I-Graphite: Ivamise ukusetshenziswa esithandweni se-vacuum sintering esingu-2200°C, ukuvuthwa kwesivinini kukhuphukela ku-2300°C endaweni engenalutho, futhi ukuvuthuluka kuba buthakathaka ngenxa yengcindezi emkhathini ovikelayo (igesi engasebenzi), engasetshenziswa ku-2400° C;

1. I-Tantalum isetshenziswa kakhulu ezithandweni ze-vacuum ngenxa yokusebenza kwayo okuhle kakhulu kwemishini nokusebenza kwe-welding. Kodwa-ke, ngenxa yokushisa kwayo okulinganiselwe kokusebenza okungu-2200 ° C nokungakwazi kwayo ukusebenzisa igesi yokuzivikela, ikhawulela ububanzi bayo bokusetshenziswa. Izinsimbi eziphikisayo ezifana ne-tantalum ne-niobium zizomunca inani elikhulu lama-athomu e-hydrogen emkhathini we-hydrogen, futhi zizobangela ukuqhekeka kwe-hydrogen uma selipholile. Izinsimbi ezifana ne-niobium ne-tantalum zivame ukuvuthwa endaweni ye-hydrogen emazingeni okushisa aphezulu, ngakho azikwazi ukuvikeleka nge-hydrogen.

Hlobo luni lokuvikela igesi i-tantalum engalusebenzisa ukwehlisa ukuqina? Ngaphezu kokusetshenziswa kokuvikelwa kwe-argon nokuvikelwa kwegesi ehlanganisiwe ye-argon-hydrogen, inqobo nje uma igesi engaphenduli nge-tantalum ngesikhathi sokwelashwa kokushisa okungapheli, ingasetshenziswa njengesivikelo somkhathi. Ukuzinza kwe-argon kungcono kunokwe-nitrogen. Kodwa-ke, ukungabi nalutho kwe-nitrogen kuhlobene, okungukuthi, akufanelekile ukusabela okuthile. I-Magnesium ingashisa ku-nitrogen. Ngakho-ke, mhlawumbe ukusabela akukwazi ukusebenzisa i-nitrogen njengegesi evikelayo, kodwa ingakhetha kuphela i-argon. Indlela yokwenza i-tungsten block ehlanganiswe ngezinto ze-tantalum: Ingafinyelelwa ngokufafaza i-plasma ungqimba lwe-tantalum ebusweni bezinto ze-tungsten ngaphansi kokuvikelwa komkhathi we-argon.

2. I-Tungsten Ngenxa yokuthi i-tungsten inokusebenza okuhle kwezinga lokushisa eliphezulu, ngokuthuthuka kanye nokwenza ngcono ukwakheka nobuchwepheshe bokukhiqiza, i-tungsten isetshenziswa kakhulu kuhhavini yokushisa ephezulu. Ayikho inkinga ngokusetshenziswa kwe-tungsten esithandweni esingaphansi kuka-2300 ℃. Ngo-2300 ℃, ukuvuthwa kuzosheshiswa, okuzothinta impilo yesevisi yomzimba oshisayo. Ngakho-ke, ngokuvamile kunconywa ukusebenzisa umoya wokuvikela we-hydrogen ku-2200 ~ 2500 ℃;

3. Isici sokushisa se-graphite sisetshenziselwa ukushisa i-graphite esithandweni somlilo. I-high-purity, high-strength, isotropic yakhelwe isotropic ye-graphite emithathu ephezulu, ngaphandle kwalokho ukusebenza okuthembekile kwezinga lokushisa eliphezulu, ukusebenza kukagesi kanye nempilo yesevisi ngeke kutholakale.

4. Esithandweni sokushisa esiphakathi nendawo nesiphansi sokumelana nokushisa, ngenxa yokushisa okuphansi, i-tungsten ngokuvamile ayisetshenziswa, ngokuvamile i-graphite, i-tantalum, ne-molybdenum kuphela isetshenziswa; ezithandweni zomlilo ezingaphansi kuka-1000 ℃, izinto ze-nickel-cadmium nezinto ze-iron-chromium-aluminium nazo zisetshenziswa. Linda.