| 摘要 |
An Sm2Co17 alloy contains by weight 22.5 to 23.5% Sm as an effective amount, 20.0 to 25.0% Fe, 3.0 to 5.0% Cu, 1.4 to 2.0% Zr as an effective amount, minor amounts of oxygen and carbon, an additional amount of Sm in the range of from about 4 to about 9 times the oxygen content of the alloy, an additional amount of Zr in the range of from about 5 to about 10 times the carbon content of the alloy, the balance being cobalt. The alloy has a crystallographic structure comprising cells of 2-17 Sm-Co rhombohedral phase surrounded by a continuous network of the 1-5 Sm-Co nexagonal phase. |
