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Abstract
Ceramic coated slide plates were developed in order to ensure smooth sliding of the tongue rail and tight contact with stock rail. The 0·5 mm thickness thin metallic bonded layer was synthesized by spraying ceramic powders using conventional plasma spraying technique. Coated materials were mostly Al2O3 ceramic including metallic materials. It is concluded field tests that coated plates satisfied endurance specifications, corrosion, wear and load specifications without any maintenance of ceramic coated plates. Since field tests have been successfully performed, more than 10,000 slide plates are being used in Japan by Shin-kansen Rail Way and private railway companies.