Affiliation:
1. Kyushu Institute of Technology
Abstract
The thermal sprayed coatings are widely used in waste incineration boilers and fossil fuel-fired
boilers. However, the defects, such as porosity, cracks and unmelted particles, in these coatings are
detrimental to corrosion performance. In this study, the nickel based self fluxing alloy coating was fused
by YAG laser to improve performance of the coating. Under appropriate laser parameters, the nonporous,
crack-free coating was produced. The rubber wheel type abrasion wear test and hot corrosion test conducted
in the presence of a mixed salt of Na2SO4/NaCl/KCl at 650°C showed that the modified coating exhibited
excellent wear and corrosion resistances compared with the as sprayed and gas fused coatings.
Publisher
Trans Tech Publications, Ltd.
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