Abstract

(Sm,Zr)(Co,Cu,Fe)_6.0–6.8 alloys are prepared by vacuum induction melting and subsequently subjected to heat treatment in order to form a high-coercivity state, which includes annealing at 1160–1180°C for 5 h, quenching to room temperature, isothermal aging at 800°C for 20 h, and subsequent stepped tempering from 800 to 400°C at an average cooling rate of 100°C/h. The morphology and composition of main structural constituents of the alloys are studied by electron microscopy using samples in the form of individual grains separated from ingots. The hysteretic properties of the (Sm,Zr)(Co,Cu,Fe)_z samples in the high-coercivity state are shown to correlate with the volume fractions of their main structural constituents, which, in turn, are controlled by the ratio of the 4f-/4d-/3d-element contents in the chemical composition of the alloy.

中文翻译：

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永磁体用高矫顽力 (Sm,Zr)(Co,Cu,Fe)z 合金的结构成分和相

摘要

(Sm,Zr)(Co,Cu,Fe) _6.0–6.8合金通过真空感应熔炼制备，随后进行热处理以形成高矫顽力状态，其中包括在 1160–1180°C 下退火 5 h ，淬火至室温，在 800°C 等温时效 20 小时，随后以 100°C/小时的平均冷却速率从 800 到 400°C 逐步回火。合金的主要结构成分的形态和组成通过电子显微镜使用从铸锭中分离出来的单个晶粒形式的样品进行研究。(Sm,Zr)(Co,Cu,Fe) _z样品在高矫顽力状态下的滞后特性与其主要结构成分的体积分数相关，而体积分数又受4楼-/4 d -/3 d -合金化学成分中的元素含量。