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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 6    December 2001

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Effect of La2O3 nanoparticles on
properties of molybdenum powder
WANG Jin-shu(王金淑),  ZHOU Mei-ling(周美玲),  ZUO Tie-yong(左铁镛),
NIE Zuo-ren(聂祚仁),  ZHANG Jiu-xing(张久兴),  LIU Juan(刘  娟)

Key Laboratory of Advanced Functional Materials, Ministry of Education,
P.R.China; School of Materials Science and Engineering,
Beijing Polytechnic University,Beijing 100022, P.R.China

Abstract: The properties of La2O3-doped molybdenum powder were studied. The La2O3 nanoparticles on the surface of molybdenum powder which is produced by the reduction of La(NO3)3-doped MoO2 in hydrogen decrease the intensity of feature energy loss peak of molybdenum substrate; but increase that of peak of Mo3d. The surface of molybdenum powder exposed to the atmosphere can be reduced because the surface is mainly covered with La2O3 nanoparticles. As a result, the capability of anti-oxidation of molybdenum is improved.

 

Key words:  La2O3-doped molybdenum powder;  XPS;  nanoparticle

ISSN 1672-7029
CN 43-1423/U

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