Diffusion‐alloyed additives in die‐upset Nd‐Fe‐B magnets

Autor:	C. D. Fuerst, E. G. Brewer
Rok vydání:	1991
Předmět:	Magnetization Materials science chemistry Magnet Ribbon Metallurgy General Physics and Astronomy chemistry.chemical_element Zinc Melt spinning Ingot Coercivity Stoichiometry
Zdroj:	Journal of Applied Physics. 69:5826-5828
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.347862
Popis:	In general, the stoichiometry of melt‐spun ribbons and subsequent hot‐worked Nd‐Fe‐B magnets derives from the composition of the starting ingot. We have shown, however, that it is possible to introduce small amounts of powdered metals into the ribbons after the ingot has been melt spun. Many elements, when mixed with the ribbons as a fine powder and then hot pressed, have been observed to diffuse into nearby ribbons, and in some cases (Cd, Cu, Au, Ir, Mg, Ni, Pd, Pt, Ru, Ag, and Zn) the elements diffused fairly evenly throughout the Nd‐Fe‐B ribbon matrix. These eleven elements significantly enhanced the coercivity of die‐upset magnets, with the highest coercivity observed with the addition of zinc (∼16 kOe).
Databáze:	OpenAIRE
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