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Citation: Wang Jikui, Fang Jingli. The Conversion Film of Na₈[(HEDP)₂Mo₅O₂₁]·5H₂O on Zinc Deposit[J]. Chinese Journal of Applied Chemistry, ;1996, 13(5): 73-75. shu

The Conversion Film of Na₈[(HEDP)₂Mo₅O₂₁]·5H₂O on Zinc Deposit

Wang Jikui ¹ ,
Fang Jingli ²

1.
1. Department of Applied Chemistry, Nanjing Universiyy of Chemical Technology, Nanjing 210009;
2.
2. Institute of Appplied Chemistry, Nanjing University, Nanjing 210009

Received Date: 30 December 1995
Available Online: 21 May 1996

A golden yellow conversion film was obtained by immersing zinc deposit specimens into Na₈[(HEDP)₂Mo₅O₂₁]·5H₂O solution (HEDP, CH₃C). Several factors including concentration, PH, temperature of the treating solution and the treating time affecting the anticorrosion efficiency of the conversion film were investigated. The accelerated corrosion test proved that the film possesses a good corrosion resistance. The composition of the film and the valence states of elements in the film were determined by XPS and AES.The results showed that the relative atomic percent content of the film was Zn 17.84%,O 50.28%,C 7.42%,Mo 18.00% and P 6.44%.Mo existed as Mo(Ⅵ),Mo(Ⅴ),Mo(Ⅲ) and Mo, while Zn existed as various species of Zn(Ⅱ) in the film.
- zinc deposit,
- Na₈[(HEDP)₂Mo₅O₂₁]·5H₂O,
- conversion film
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The Conversion Film of Na₈[(HEDP)₂Mo₅O₂₁]·5H₂O on Zinc Deposit