著者

佐藤 忠夫 堀米 毅 上田 幹人

出版者

The Surface Finishing Society of Japan

雑誌

表面技術 = The Journal of the Surface Finishing Society of Japan (ISSN:09151869)

巻号頁・発行日

vol.51, no.6, pp.640-645, 2000-06-01

被引用文献数

1

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TiB₂ and TiN films were coated by chemical vapor deposition on SKD 61 steel to improve the corrosion resistivity of a diecasting machine in a melted aluminum alloy. The protectivity of the film in the melted aluminum alloy was examined by an immersion test at 900°C and a thermal cycle test between room temperature and 900°C. TiN film, which serves as a binder, greatly improves the adhesion of TiB₂ film on the steel substrate. The thermal cycle test indicated that the optimum thickness of TiB₂ and TiN layers is at 4 and 6μm, respectively. Compared to ion-nitrized steel, steel coated by TiB₂/TiN exhibits significantly higher degree of corrosion resistivity.