Design of Protective Coatings for Glass Lens Molding
學年 96
學期 1
出版（發表）日期 2007-12-01
作品名稱 Design of Protective Coatings for Glass Lens Molding
作品名稱（其他語言）
著者 Ma, Kung Jeng; Chien, H.H.; Chuan, W.H.; Chao, Choung Lii; Hwang, K.C.
單位 淡江大學機械與機電工程學系
出版者 Stafa-Zurich: Trans Tech Publications Ltd.
著錄名稱、卷期、頁數 Key Engineering Materials 364-366, pp.655-661
摘要 The glass molding process is considered to have a great potential for the mass production of aspherical glass lenses with high precision and low cost. However, glass molding has a serious problem of mold sticking with glass which needs to be resolved. This research investigates the interface reaction between glass and mold by high temperature wetting experiment, which provides the reference for the designing anti-stick coatings. The SUMITA K-PSK200 optical glass gobs with low Tg were used in this study. The influence of operation temperature, ambient gas, substrate materials, and thin film composition on wettability of glass at high temperature were studied. The results show that the higher the temperature, the smaller the wetting angle between glass gob and substrate could be observed. This indicates that severe interface chemical reaction occured and resulted in the loss of transparency in glass appearance. The wetting experiment in nitrogen ambient improved the sticking situation. The combination of chemically stable substrates and coatings, such as Sapphire (substrate) / GaN (film) and Glass (substrate) / Al2O3 (film) can achieve the best antistick propose. The precious metal films, such as Pt, Ir, coated on the ceramic substrates can effectively reduce the interface reaction between the glass and substrates.
關鍵字 Coating;Glass Molding;Interface Reaction;Wetting
語言 en
ISSN 1013-9826 1662-9795
期刊性質 國外
收錄於 EI
產學合作
通訊作者 Chao, Choung Lii
審稿制度
國別 CHE
公開徵稿
出版型式 紙本
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