| 摘要 |
PURPOSE:To provide a ferromagnetic, amorphous alloy excellent in thermal stability and in saturated magnetic flux density, by forming an alloy composed of Co, Ni, Fe, Zr, and Cr, Mo, or W in a specific ratio. CONSTITUTION:An amorphous magnetic alloy having a composition shown by the following formula: (CoxNiyFez)aMbZrc, where M is one or more memebers among transition metals such as Cr, Mo, W, x=l-y-z, 0<=y<=0.2, 0<=z<=0.7, a=1-b- c, 0<=b<=0.05, 0.05<=c<=0.2. Said alloy contains no nonmetallic elements such as B, C, P, Si etc. as vitrifiable elements unlike conventional amorphous alloys, hence it is thermally stable and shows no changes with time in magnetic characteristics. In addition it has >=450 deg.C crystallization temp., >=10kg saturated magnetic flux density, -5X10<-6>-5X10<-6> magnetostriction, and is made amophous relatively easily by super-rapid cooling of the molten alloy. |
