Influence of heat treatment on structure and properties of cast magnets of the Nd-Ge-C system alloyed by copper

被引：0
|
作者：
Vystavkina, VV [1 ]
Vasyl'yeva, OO [1 ]
机构：
[1] Zaporozhe State Univ, UA-69063 Zaporozhe, Ukraine
来源：
METALLOFIZIKA I NOVEISHIE TEKHNOLOGII | 2004年 / 26卷 / 08期
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中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The structure-phase transformation after heat treatment and Cu-doping of Fe66Cu2Nd20C9.5B0.5 cast alloy is investigated in a present work. For Fe66Cu2Nd20C9.5B0.5 alloy preparation, constituent elements are inductively melted under argon atmosphere. The magnets are prepared by the annealing of ingots. As revealed, complex processes of main-elements' dilution are occurred after Nd-Fe-C-magnets' annealing. Such processes lead to the optimal-microstructure formation at annealing temperature 950degreesC. As shown, during annealing-temperature enhancement, coercivity correlates with NdsFe14C and Nd2Fe17 phases' microhardness and lattice-parameters' change. In Cu-doped alloys after annealing during 5 h at 950degreesC, coercivity is raised up to 880 kA/m and residual induction up to 0.58 T. The Cu addition to Nd-Fe-C alloys appears to be a promising way for high-coercivity magnets' production.
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页码：1011 / 1022
页数：12
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