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분무건조와 환원-확산 공정에 의한 Nd2Fe14B 분말의 합성

Synthesis of Nd2Fe14B Powders by Spray-Drying and Reduction-Diffusion Process

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주제분류금속공학

초록

Abstract

The magnetic Nd-Fe-B powders were prepared by a thermochemical method, consisting of the processes of spray-drying, debinding, milling, H2-reduction, Ca-reduction, and washing. The optimum process conditions were studied by microstructural and thermal analysis. The resultant Nd-Fe-B powder was spherical with the size of 1 mm. Effects of the process parameters of each step on the microstructure of the powders were investigated, and their magnetic properties were evaluated.

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