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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 2    No. 1    February 1992

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THE RELATTON BETWEEN THE TEMPERING EFFECTS AND THE INTRINSIC COERCIVITY OF SINTERED SmCo5 ALLOY AT 750℃
Pan Shuming

General Research Institute of Non-Ferrous Metals, Being, 100088, China

Abstract:The relation between the tempering effects of sinterd SmCos alloy at 750℃and its intrinsic coercivity (iHC) has been studied by the use of photoelectron energy spectrum, X-ray diffraction and high-voltage electrop microscope. The result is that the cause of iHC dropping seriously for sintered SmCo5 alloy tempered at 750℃ is not the eutectoid decomposition of SmCo5 and the increase of oxygen. In fact, iHC dropping is caused by that some defect-rich regions in Sm2Co17 decomposed form SmC05 from nucleation centers in reversed magnetization course.

 

Key words: sintered alloy, tempering effect, intrinsic coercivity, SmCo5

ISSN 1672-7029
CN 43-1423/U

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