中文

Journal of Applied Sciences ›› 1996, Vol. 14 ›› Issue (3): 353-357.

• Articles • Previous Articles     Next Articles

STUDIES OF THE GRASS-GREEN MOLYBDATE CONVERSION FILM ON STAINLESS STEEL

HAN KEPING1, FANG JINGLI1, LIU QIN2   

  1. 1. Applied Chemistry Institute, State Key Laboratory Coordination Chemistry, Nanjing University;
    2. Nanjng Economics College
  • Received:1994-09-21 Revised:1995-05-09 Online:1996-09-30 Published:1996-09-30

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Abstract: A grass-green conversion film was formed on stainless steel with the cathodic electcodeposition method from molybdate solution. This film displayed good thermostability. The results of XPS and AES analysis showed that the thickness of the film was 173nm and Mo existed as Mo(VI) on the surface of the film, but as Mo(VI) and Mo(IV) in the niternal layer of the film. The relative atomic percent contents (A.C.%) of the film obtained from the elemental composition constant region of the profile curved by AES were O 52.8%, Mo 30.4%,P 12.5% and Fe 4.3%respectively. The cyclevoltammetric oxidation peak also showed that the Mo (IV) existed in the internal layer of the film.

Key words: molybdate, AES, cyclevoltammetry, colourring film, stainless steel, XPS