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| THERMOGRAVIMETRIC STUDY OF EFFECT OF RARE EARTH ON CATALYTIC CARBONITRIDING OF STEEL 20 |
| by WEI Yongde; CHEN Gang (Harbin Institute of Technology); LIU Jinxiang; GAO Xiuying (Dalian Institute of Chemical Physics; Academia Sinica) |
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Cite this article:
by WEI Yongde; CHEN Gang (Harbin Institute of Technology); LIU Jinxiang; GAO Xiuying (Dalian Institute of Chemical Physics; Academia Sinica). THERMOGRAVIMETRIC STUDY OF EFFECT OF RARE EARTH ON CATALYTIC CARBONITRIDING OF STEEL 20. Acta Metall Sin, 1986, 22(3): 132-136.
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Abstract A study was made of the kinetics of the process of catalytic carbonitriding of a steel 20 surface activated by the various additions of rare earth under different temperatures by means of thermogravimetric analysis! It showed that the co-filtration of steel surface carbonitride together with rare earth, as an active element, leads to result microalloying . The carbonitriding rate may be accelerated up to 20—25% with improved quality of concentrated case.
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Received: 18 March 1986
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1 Waudby, P.E., Int. Met. Rev., 23 (1978) , 74．
2 余宗森;褚幼义,钢中稀土,冶金工业出版社,1982．
3 塩川二朗,铁钢,68(1982) ,1065．
4 韦永德,刘志如;王春义;范爱龄;程建民,金属学报,19(1983) .B 197．
5 谭志诚,金属学报,16(1980) .239．
6 Lange, K.W.; Shenck, H., Chemical Metallurgy of Iron and Steel, ISI, London, 1971． p. 367． |
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