湿式法により鋼板上に作製した複合セラミック膜の熱安定性と機械的特性

概要

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A ceramic coating slurry was designed, which suspended or dissolved ceramic components (silica, titania, alumina and kaolinite) and glass-forming components (alkali silicates and soda ash) in water. SiO_2-Al_2O_3-TiO_2 based composite films (about 100μm thick) were deposited on a steel plate by coating the slurry with a brush, followed by drying and calcination. The ceramic coatings obtained under proper conditions were found to exhibit excellent stability over a wide range of temperature. As evaluated by copper electrodeposition method, through-holes were present in the coatings calcined at 700℃ or below, while they were eliminated completely after calcination at 1100℃ in N_2. Vickers hardness of the coatings increased with increasing calcination temperature, while adhesive strength went through a sharp maximum at 800℃.
社団法人日本セラミックス協会の論文
2006-02-01