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02376 Development of Coatings for Environments with High Sulfur and/or Carbon Activities at Low Oxygen Potentials

Product Number: 51300-02376-SG
ISBN: 02376 2002 CP
Author: T. Weber, C. Rosado and M. Schtutze
Industry: Energy Generation
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High velocity oxy-fuel (HVOF) thermal spray coatings of TiA1 and several A1- as well as A1-Ti-cementation coatings were applied on ferritic and austenitic stainless steels and tested in a reducing sulfidizing atmosphere, under metal dusting conditions and in a sulfidizing carburizing atmosphere at a temperature of 700°C. The tests were run isothermally for up to 1000 h. The thermal spray coatings and the Al-diffusion coatings were corrosion resistant in purely sulfidizing and in metal dusting atmospheres. If a sulfidizing and carburizing environment is present only the A1-Ti-codiffusion coating can provide protection over the whole test duration. Keywords: high temperature corrosion, protective coatings, reducing sulfidizing atmosphere, carburizing atmosphere, metal dusting, refinery residues
High velocity oxy-fuel (HVOF) thermal spray coatings of TiA1 and several A1- as well as A1-Ti-cementation coatings were applied on ferritic and austenitic stainless steels and tested in a reducing sulfidizing atmosphere, under metal dusting conditions and in a sulfidizing carburizing atmosphere at a temperature of 700°C. The tests were run isothermally for up to 1000 h. The thermal spray coatings and the Al-diffusion coatings were corrosion resistant in purely sulfidizing and in metal dusting atmospheres. If a sulfidizing and carburizing environment is present only the A1-Ti-codiffusion coating can provide protection over the whole test duration. Keywords: high temperature corrosion, protective coatings, reducing sulfidizing atmosphere, carburizing atmosphere, metal dusting, refinery residues
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