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- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2021.12
- 수록면
- 131 - 131 (1page)
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In many cases of surface treatments, especially for electronic devices or a pretreatment layer before painting of a car, the coating layer is required to be very thin to have low surface electrical contact resistance, good adhesion with paints but it also requires high corrosion resistance. At that time, the traditional phosphate coating systems are normally not satisfied due to the formation of thick layers and they are normally non-conductive.
In order to meet these requirements, coatings contain components that are able to self-oxidizing to provide electrons for recover substrates from corrosion attacked areas, such as V, Cr, Zr, Mo, Nb, Ti··· are particularly concerned. In this work, we introduce the self-healing anti-corrosion chemical conversion coating solutions for light alloys such as magnesium and aluminum which called Smart Chemical Conversion Coatings. The coatings are meet three important criteria: (1) very good resistance to corrosion; (2) low surface electrical contact resistance and (3) self-healing for defect areas.
For magnesium alloys, the coatings contain of vanadium-based which exhibited high corrosion resistance but low electrical contact resistance. The coatings were formed on Mg alloys by immersion treatment in the acidic chemical conversion coating solution containing vanadium ions. Results indicated that the first important thing to improve the corrosion resistance of Mg alloys is that the coating must be coated on both the α-Mg and β-Mg<SUB>17</SUB>AI<SUB>12</SUB> phases of Mg alloys. The second important thing, the coating must be thin to produce low electrical contact resistances but it should have a self-healing effect to produ ... 전체 초록 보기
In order to meet these requirements, coatings contain components that are able to self-oxidizing to provide electrons for recover substrates from corrosion attacked areas, such as V, Cr, Zr, Mo, Nb, Ti··· are particularly concerned. In this work, we introduce the self-healing anti-corrosion chemical conversion coating solutions for light alloys such as magnesium and aluminum which called Smart Chemical Conversion Coatings. The coatings are meet three important criteria: (1) very good resistance to corrosion; (2) low surface electrical contact resistance and (3) self-healing for defect areas.
For magnesium alloys, the coatings contain of vanadium-based which exhibited high corrosion resistance but low electrical contact resistance. The coatings were formed on Mg alloys by immersion treatment in the acidic chemical conversion coating solution containing vanadium ions. Results indicated that the first important thing to improve the corrosion resistance of Mg alloys is that the coating must be coated on both the α-Mg and β-Mg<SUB>17</SUB>AI<SUB>12</SUB> phases of Mg alloys. The second important thing, the coating must be thin to produce low electrical contact resistances but it should have a self-healing effect to produ ... 전체 초록 보기
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