Izinga lokushisa kabusha kabusha kwe-lanthanum-doped molybdenum wire liphakeme kune-pure molybdenum wire, futhi ngoba inani elincane leLa2o3 lingathuthukisa izakhiwo nokwakheka kwe-molybdenum wire. Ngaphandle kwalokho, i-LA2O3 Umphumela wesigaba sesibili ungakhulisa namandla okushisa ekamelo we-molybdenum wire futhi uthuthukise ubucwebe bokushisa kwekamelo ngemuva kokubuyiselwa emuva.
Ukuqhathanisa okushisa kabusha kokushisa: I-MicrossCreature yocingo olumsulwa lwe-molybdenum ngokusobala yanwetshwa ngo-900 ℃ futhi yawakhiwa kabusha ngo-1000 ℃. Ngokukhuphuka kokushisa okuvuthayo, okusanhlamvu okuphindaphindekile nakho kukhula, futhi izicubu ze-fibrous zinciphisa kakhulu. Lapho izinga lokushisa le-annelling lifinyelela ku-1200 ℃, i-molybdenum wire iye yaphinda yanda kakhulu, futhi i-microscucture yayo ibonisa okusanhlamvu okuphindwe kabili okuphindwayo. Njengoba izinga lokushisa lenyuka, okusanhlamvu kukhula ngokungalingani futhi kubonakale okusanhlamvu okugcwele. Lapho kufakwa ku-1500 ℃, ucingo lwe-molybdenum kulula ukuluphula, futhi isakhiwo salo sibonisa okusanhlamvu okuxakile. Ukwakheka kwe-fiber of lanthanum-doped molybdenum wire ebanzi ngemuva kokuncishiswa ngo-1300 ℃, futhi ukwakheka kwezinyo okunjengokwedlule kwavela emngceleni wefayibha. Ngo-1400 ℃, okusanhlamvu okuphindaphindekile kwavela. Ku-1500 ℃, ukuthungwa kwe-fiber kwehle kakhulu, futhi kwavela ukwakheka okuphindaphindekile, futhi okusanhlamvu kwakhula ngokungafanele. Izinga lokushisa kabusha kabusha le-lanthanum-doped molybdenum wire liphakeme kunalolo lwe-pure molybdenum wire, ikakhulukazi ngenxa yomphumela wezinhlayiya zesigaba zesibili ze-LA2O3. Isigaba sesibili seLa2o3 sivimbela ukufuduka komngcele okusanhlamvu nokukhula okusanhlamvu, ngaleyo ndlela kwandisa izinga lokushisa kabusha.
Ukuqhathaniswa kwezimo zokushisa kwe-mehendi okuqhathanisayo Lapho izinga lokushisa le-anneall ngo-1200 ℃, ukugcwala kufinyelela inani eliphezulu. I-elongation inciphisa ngokushisa kwe-anneren. I-annew advent at 1500 ℃, futhi i-excation yayo icishe ilingane ne-zero. Ukugcwala kwe-la-doped molybdenum wire kufana ne-pure molybdenum wire, futhi isilinganiso sokubumbana sifinyelela phezulu lapho sifakwa ku-1200 ℃. Khona-ke ukugcwala kuncipha ngokushisa okulula. Okuhlukile kuphela inani lokuncipha lihamba kancane. Yize ukugcwala kwe-lanthanum-doped molybdenum wire kunciphiswe kwehle ngemuva kokuncishiswa ngo-1200 ℃, ukunwebeka kuphakeme kune-pure molybdenum wire.
Isikhathi Seposi: Dece-19-2021