首页> 外文期刊>Inorganic materials: applied research >Peculiarities of the Formation of High-Coercivity Structure of (Sm, Zr)(Co, Cu,Fe)z Alloys in Varying the (4f-,4d-)-to-(3d-) Element Ratio
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Peculiarities of the Formation of High-Coercivity Structure of (Sm, Zr)(Co, Cu,Fe)z Alloys in Varying the (4f-,4d-)-to-(3d-) Element Ratio

机译:Peculiarities of the Formation of High-Coercivity Structure of (Sm, Zr)(Co, Cu,Fe)z Alloys in Varying the (4f-,4d-)-to-(3d-) Element Ratio

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摘要

Processes of the formation of the high-coercivity state of the Sm_(0.85)Zr_(0.15)(C0_(0.702)Cu_(0.088)Fe_(0.210))zalloys with different indices z = 6.0, 6.5, and 6.8, which characterize the (4f-,4d-)-to-(3d-) element ratio, arestudied. Correlations between the chemical composition of samples and their microstructure and the coerciveforce, which is formed in the course of isothermal aging and aging during slow cooling (or stepped annealing),are shown. The interrelation between the high-coercivity state and quantitative relationship (volume fractions)of the main structural components based on the 2:17R and 1:5H phases is discussed. The cellular morphologyof the alloy, which corresponds to the high-coercivity state, is shown to form during isothermalaging, whereas the final phase compositions of the main structural components form in a temperature rangefrom the isothermal aging temperature to 400℃ upon stepped (slow) cooling or quenching. The magneticproperties of samples in the high-coercivity state are determined by the completeness of phase transformationsin the main structural components, which substantially depends on their quantitative relations and the(4f-,4d-)-to-(3d-) element ratio.

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