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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48200

Title: Thermal stability of Ir–Re coatings annealed in oxygen containing atmospheres
Authors: Shih-Chang Liu
Yung-I Chen
Hung-Yin Tsai
Kuo-Cheng Lin
Yung-Hsing Chen
Contributors: 國立臺灣海洋大學:光電與材料科技學系
Keywords: Annealing
Glass molding
Thermal stability
Date: 2013-12
Issue Date: 2018-08-16T02:10:18Z
Publisher: Surface and Coatings Technology
Abstract: Abstract: Ir–Re coatings are widely applied as protective coatings on glass molding dies. Because the glass molding process in mass production is conducted in an oxygen-containing atmosphere at a high temperature, the protective coatings must endure cyclic annealing treatments. Oxidation and thermal stability of Ir–Re coatings has received scant attention. In this study, Ir–Re coatings were prepared using co-sputtering. Constant-temperature annealing treatments were conducted at 600 °C under a 1% O2–Ar atmosphere, which is an oxidation-accelerating atmosphere. The thermal cyclic test was performed at 270 and 600 °C under atmospheres of 1% O2–Ar and 15 ppm O2–N2, respectively. The 15 ppm O2–N2 atmosphere is glass molding atmosphere suitable for mass production. The variations in crystalline structure, nanohardness, surface roughness, and residual stress after various annealing treatments were investigated. The more elevated Ir content coating, namely, Ir0.77Re0.23, displays superior thermal stability compared with the lower Ir content coating, namely, Ir0.53Re0.47.
Relation: 237 pp.105-111
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48200
Appears in Collections:[光電科學研究所] 期刊論文

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