Influence of Salt Coating on Hot Corrosion Behavior of Co-Cr Alloy

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Abstract:

The hot corrosion behavior of Co-10Cr and Co-10Cr-5Al alloys with different coating weight (2–2.5 mg/cm2 and 4–4.5 mg/cm2 of 25%K2SO4 + 75%Na2SO4 was studied at 900 °C for 24 h in air. Results show that for both of the alloys, the mass gain of the alloy coated with 2–2.5 mg/cm2 of 25%K2SO4 + 75%Na2SO4 is greater than that of the alloy coated with 4–4.5 mg/cm2 of 25%K2SO4 + 75%Na2SO4. And correspondingly, the corrosion products layer of two alloys with the coating weight of 2–2.5 mg/cm2 is thicker than that with coating weight of 4–4.5 mg/cm2. The abnormal phenomenon is also briefly discussed.

Keywords: 25%K2SO4 + 75%NA2SO4; CO-CR ALLOY; COATING WEIGHT; HOT CORROSION

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/asl.2011.1868

Publication date: November 1, 2011

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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