English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 52084/87215 (60%)
造訪人次 : 8914747      線上人數 : 525
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/65292

    題名: Design of Protective Coatings for Glass Lens Molding
    作者: Ma, Kung Jeng;Chien, H.H.;Chuan, W.H.;Chao, Choung Lii;Hwang, K.C.
    貢獻者: 淡江大學機械與機電工程學系
    關鍵詞: Coating;Glass Molding;Interface Reaction;Wetting
    日期: 2007-12
    上傳時間: 2011-10-20 21:37:41 (UTC+8)
    出版者: Stafa-Zurich: Trans Tech Publications Ltd.
    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.
    關聯: Key Engineering Materials 364-366, pp.655-661
    DOI: 0.4028/www.scientific.net/KEM.364-366.655
    顯示於類別:[機械與機電工程學系暨研究所] 期刊論文


    檔案 大小格式瀏覽次數



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋