| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite magnetic member particularly improved in the magnetic properties in the ferromagnetic part of a composite magnetic member having ferromagnetic part and non-magnetic part in one member. SOLUTION: A material having ferromagnetism, having a composition consisting of 0.35-0.75% C, 10-16% Cr, <=7% Mn, <=4% Cu, <=0.05% N, <=2% of either or both of Si and Al, and the balance essentially Fe, is partially heated to a temp. not lower than the austenitic transformation temp. and cooled, by which austenite is allowed to remain, and ferromagnetic part and non-magnetic part are formed. The ferromagnetic part has >=200 maximum magnetic permeability μm and the non-magnetic part is composed essentially of austenitic structure, and further, magnetic permeability and Ms point are regulated to <=2 and <=-10 deg.C, respectively. As alloying element, Ni can be incorporated by <=4% within the range satisfying Cu+Ni=6%. |
