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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48196

Title: The chemical inertness of Ir–Re and Ta–Ru coatings in molding B2O3–ZnO–La2O3-based glass
Authors: Shih-Chang Liu
Yung-I Chen
Jiin-Jyh Shyu
Hung-Yin Tsai
Yung-Hsing Chen
Kun-Yi Lin
Kuo-Cheng Lin
Contributors: 國立臺灣海洋大學:光電與材料科技學系
Keywords: Annealing
Glass molding
OxidationThermal stability
Ir–Re
Date: 2014-11
Issue Date: 2018-08-16T01:23:08Z
Publisher: Surface and Coatings Technology
Abstract: Abstract: B2O3–ZnO–La2O3-based glasses with a high refractive index are widely used as optical glass materials for lenses. To evaluate the feasibility of applying protective coatings on glass molding dies, Ir–Re and Ta–Ru coatings were sputtered on cemented tungsten carbide or silicon substrates. B2O3–ZnO–La2O3-based glasses were placed on the surface of the coatings and heat-treated in a glass molding atmosphere of 15-ppm O2–N2 at a molding temperature of 600 °C. Up to 1000 thermal cycling annealing tests were performed at 270 °C and 600 °C. The holding time at the molding temperature was set at 1 min for each cycle. The variations in chemical inertness, residual stress, and coating characteristics after annealing were investigated.
Relation: 259 pp.352-357
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48196
Appears in Collections:[光電科學研究所] 期刊論文

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