13-based alloy; magnetocaloric; sample size"/> 0.6Pr0.4Fe11.4Si1.6B0.2 alloy was produced with industrial raw materials by induction melting method and NaZn13 type magnetocaloric phase was obtained by annealing at high temperature for short time. The annealed alloy was hydrogenated with various shapes and sizes. The bulk sample with a size of 3-5 cm was broken to powders from the outside to inside like an onion with a smooth ball shape center part left during the hydrogenation process, while the small samples with sizes less than 1 cm still hold their original shapes. The critical crack size for the La0.6Pr0.4Fe11.4Si1.6B0.2 alloy was 1 cm on hydrogenation to avoid breaking down to powders. The processing could be used to develop La0.6Pr0.4Fe11.4Si1.6B0.2Hx alloys with a certain sizes and shapes directly from casting alloy by hydrogenation absorption."/>

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Processing effect on the hydrogenation of La0.6Pr0.4Fe11.4Si1.6B0.2 magnetocaloric alloy
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Affiliation:

China Northern Steel Rare-earth Group Hi-tech Co,Ltd Baotou,,State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing

Clc Number:

TB64

Fund Project:

SB RAS Project (III.23.2.1); Fundamental Research Project of Byelorussian AS and Fundamental Research Program OEMMPU RAS “Multiscale Investigation of Properties and Behavior of Advanced Materials”

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    Abstract:

    Thick plate of La0.6Pr0.4Fe11.4Si1.6B0.2 alloy was produced with industrial raw materials by induction melting method and NaZn13 type magnetocaloric phase was obtained by annealing at high temperature for short time. The annealed alloy was hydrogenated with various shapes and sizes. The bulk sample with a size of 3-5 cm was broken to powders from the outside to inside like an onion with a smooth ball shape center part left during the hydrogenation process, while the small samples with sizes less than 1 cm still hold their original shapes. The critical crack size for the La0.6Pr0.4Fe11.4Si1.6B0.2 alloy was 1 cm on hydrogenation to avoid breaking down to powders. The processing could be used to develop La0.6Pr0.4Fe11.4Si1.6B0.2Hx alloys with a certain sizes and shapes directly from casting alloy by hydrogenation absorption.

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[Zhang Tao, Liu Cuilan, Zhang Yong. Processing effect on the hydrogenation of La0.6Pr0.4Fe11.4Si1.6B0.2 magnetocaloric alloy[J]. Rare Metal Materials and Engineering,2017,46(6):1684~1688.]
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History
  • Received:January 23,2015
  • Revised:March 05,2015
  • Adopted:May 13,2015
  • Online: November 07,2017
  • Published: