Patent ID: 11398327

Abstract:
An alloy for R-T-B based permanent magnet in which R is a rare earth element, T is a combination of Fe and Co, and B is boron. R includes one or more selected from Nd, Pr, Dy, and Tb. The alloy for R-T-B based permanent magnet includes M and C. M is one or more selected from Al, Cu, Zr, and Ga. Relative to 100 mass % of the alloy for R-T-B based permanent magnet, a total content of Nd, Pr, Dy, and Tb is 28.00 mass % or more and 34.00 mass % or less, Co content is 0.05 mass % or more and 3.00 mass % or less, B content is 0.70 mass % or more and 0.95 mass % or less, C content is 0.12 mass % or more and 0.19 mass % or less, a total content of M is more than 0 mass % and 4.00 mass % or less, and Fe is a substantial balance.