Patent ID: 11929488
Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 11:
12. The preparation method according to claim 6, characterized in that: the conditions of the low-vacuum induction melting include evacuating to 10−1 to 10−2 Pa, and then filling with argon to 0.01-0.07 MPa; the conditions of the annealing treatment include placing the alloy ingot in the protective-atmosphere furnace, evacuating to 10−1 to 10−2 Pa, then filling with argon to 0.05-0.08 MPa, and annealing at 1020° C. to 1100° C. for 1 to 10 h.