ASTUDY OF VALENCE OF YTTRIUM IN Y_2O

金属学报(英文版), 1999, 12(4): 602-606.

ASTUDY OF VALENCE OF YTTRIUM IN Y_2O_3 Mo CATHODE

J.S.Wang1 , 2) , M.L.Zhou2) , J.X.Zhang2) , Z.R.Nie2) T.Y.Zuo2) and G.J.Zhang2) 1) State Key Laboratory of Materials Chemistry and Applications , Peking University , Beijing 100871 , China2) Schoolof Materials Science and Engineering , Beijing Polytechnic University , Beijing 100022 , China

Keywords： valence , null , null , null

The valenceofelementyttrium of Y2 O3 Mocathode materialhasbeenstudied by usingther mal weight analysis, X ray diffraction analysis, Scanning electron microscopy and X rayphotoelectronspectrum . It hasbeen provedthatyttrium oxidecan bereduced by molybdenum carbide. Thereaction between powdered Y2 O3 and Mo2 Ccan happen at 1173 , and Y2 O3may bereduced to metallicyttrium . Afterthepowder mixtureof Y2 O3 and Mo2 Cwasheat treated at1873 K, Yttrium existsin two kinds of chemicalstate- yttrium of zero valence and yttrium ofthreevalences.

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ASTUDY OF VALENCE OF YTTRIUM IN Y_2O_3 Mo CATHODE

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