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Low- Chromate Sealing Solution for Anodizing of Aluminum by Chromic Acid

Hong Cheng

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Abstract

By means of salt spray test, paint adhesion test, sealing quality and continuity examination, the effects of different process parameters in sealing solution on the coating performance ano dized by chromic acid were investigated, and the sealing technol ogy with low chromate content and excellent corrosion resistance was suggested. Results show that the performance of anodized film using new technology is not lower than that in the traditional solution with high chromate concentration.

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What this paper is about

By means of salt spray test, paint adhesion test, sealing quality and continuity examination, the effects of different process parameters in sealing solution on the coating performance ano dized by chromic acid were investigated, and the sealing technol ogy with low chromate content and excellent corrosion resistance was suggested. Results show that the performance of anodized film using new technology is not lower than that in the traditional solution with high chromate concentration.

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Available abstract

By means of salt spray test, paint adhesion test, sealing quality and continuity examination, the effects of different process parameters in sealing solution on the coating performance ano dized by chromic acid were investigated, and the sealing technol ogy with low chromate content and excellent corrosion resistance was suggested. Results show that the performance of anodized film using new technology is not lower than that in the traditional solution with high chromate concentration.

Key concepts: Anodizing, Chromate conversion coating, Chromic acid, Materials science, Salt spray test, Metallurgy, Aluminium, Corrosion

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