Izinga lokushisa le-recrystallization le-lanthanum-doped molybdenum wire liphakeme kunocingo oluhlanzekile lwe-molybdenum, futhi kungenxa yokuthi inani elincane le-La2O3 lingathuthukisa izakhiwo kanye nesakhiwo socingo lwe-molybdenum.Ngaphandle kwalokho, umphumela wesigaba sesibili se-La2O3 ungaphinda ukhuphule izinga lokushisa legumbi lentambo ye-molybdenum futhi uthuthukise ukuqina kwezinga lokushisa kwegumbi ngemva kokwenziwa kabusha kwekristalu.
I-Recrystallization Temperature Comparison: I-microstructure yocingo oluhlanzekile lwe-molybdenum ngokusobala yanwetshwa ku-900 ℃ futhi yaphinde yahlanganiswa ku-1000 ℃.Ngokukhuphuka kwezinga lokushisa le-annealing, okusanhlamvu kwe-recrystallization nakho kuyanda, futhi izicubu ezinama-fibrous ziyancipha kakhulu.Lapho izinga lokushisa le-annealing lifinyelela ku-1200 ℃, intambo ye-molybdenum yenziwe kabusha ngokuphelele, futhi i-microstructure yayo ikhombisa okusanhlamvu okufana okufanayo okulinganayo okuphinde kukhanye.Njengoba izinga lokushisa likhuphuka, okusanhlamvu kukhula ngokungalingani futhi kubonakala okusanhlamvu okumahhadla.Uma ifakwe ku-1500 ℃, intambo ye-molybdenum kulula ukuphuka, futhi isakhiwo sayo sibonisa okusanhlamvu okumahhadla kwe-quiaxed.Isakhiwo sefayibha ye-lanthanum-doped molybdenum wire siye sanwetshwa ngemva kokufakwa ku-1300 ℃, futhi umumo ofana nezinyo uvele emngceleni wefayibha.Ku-1400 ℃, okusanhlamvu okwenziwe kabusha kwavela.Ku-1500 ℃, ukuthungwa kwefayibha kwehle kakhulu, futhi ukwakheka okwenziwe kabusha kwavela ngokusobala, futhi okusanhlamvu kwakhula ngokungalingani.Izinga lokushisa lokuvuselela kabusha le-lanthanum-doped molybdenum wire liphakeme kunalelo locingo lwe-molybdenum oluhlanzekile, olubangelwa ikakhulukazi umthelela wezinhlayiya zesigaba sesibili se-La2O3.Isigaba sesibili se-La2O3 sivimbela ukufuduka komngcele wokusanhlamvu kanye nokukhula kokusanhlamvu, ngaleyo ndlela kukhuphule izinga lokushisa le-recrystallization.
Ukuqhathaniswa Kwezakhiwo Zemishini Yezinga Lokushisa Kwegumbi: Ukwelulwa kwentambo ye-molybdenum emsulwa kuyenyuka njengoba izinga lokushisa le-anneal likhuphuka.Lapho izinga lokushisa le-anneal liku-1200 ℃, ubude bufinyelela inani eliphezulu.Ubude buyancipha njengoba izinga lokushisa le-aneal likhuphuka.Ifakwe ku-1500 ℃, futhi ubude bayo bucishe bulingane noziro.Ukwelulwa kwentambo ye-molybdenum ye-La-doped kufana nentambo ye-molybdenum emsulwa, futhi izinga lokwelulwa lifinyelela umkhawulo omkhulu lapho lidonswa ku-1200 ℃.Bese-ke ubude buyehla ngokunyuka kwezinga lokushisa.Okuhlukile kuphela ukuthi izinga lokunciphisa lihamba kancane.Nakuba ukunwetshwa kwentambo ye-lanthanum-doped molybdenum yehliswa ngemva kokudonsa ku-1200 ℃, ubude buphakeme kunocingo oluhlanzekile lwe-molybdenum.
Isikhathi sokuthumela: Dec-19-2021