碳化鎢模具材料特性對抗沾黏膜層設計及其與玻璃間界面化學反應之影響研究

Study on the Influences of Material Properties of WC Molds on the Design of Protective Coatings and Its Interfacial Reaction with Various Glasses

林祐瑞(You-Ruei Lin)

指導教授 ： 趙崇禮

淡江大學/工學院/機械與機電工程學系碩士班/碩士(2010年)

https://doi.org/10.6846/TKU.2010.00944

摘要

玻璃模造技術最有機會製作出高解析度且成本較低廉的非球面玻璃透鏡。目前玻璃模造業界所面臨最大問題在於熱壓後沾黏情形，如玻璃沾黏於模仁表面、模仁氧化與磨耗，這都大大縮減模仁使用壽命；對於如何延長模仁使用壽命，抗沾黏膜層的鍍膜參數將是最重要關鍵，利用抗沾黏膜輔助模仁材料，提高模仁壽命、抵抗沾黏。本研究係利用不同光學玻璃材料與碳化鎢模仁和Pt/Ir多層膜與混合膜結構鍍膜，在高溫濕潤環境中比較及探討界面化學反應。研究結果顯示，結合劑含量較多的碳化鎢模仁在高溫狀態下，較容易與光學玻璃相互擴散進而產生激烈之界面化學反應，使玻璃與模仁產生嚴重沾黏，但經溶膠-凝膠鍍膜及鋼化處理下之B270平板玻璃，有效緩和與碳化鎢模仁界面化學反應所造成的沾黏。此外，抗沾黏膜層結構的設計，也會影響膜層於高溫反應後之壽命；研究中碳化鎢模仁鍍上Pt/Ir混合膜結構可有效抑制光學玻璃與碳化鎢模仁由於界面化學反應所造成沾黏現象。在玻璃模造時，選取光學玻璃除考量光學、化學性質及成本等外，尚須考量對於模仁材料及鍍膜材料之化學吸引力，以增加模仁與硬膜之耐久性進而提高模造非球面鏡面之產值，來達到降低成本、大量轉印的目標。

關鍵字

光學玻璃 ； 玻璃模造 ； 碳化鎢模具 ； 結合劑 ； 擴散 ； 沾黏 ； 界面反應

並列摘要

Glass molding process（GMP）is considered to have great potential for mass production of spherical/aspheric glass lenses to a higher achievable accuracy and at a lower cost. However, GMP has its own problems to deal with such as sticking, oxidation, and diffusion at high temperature working environment. As a result, making mold life longer has become very critical in the GMP industry. This research aimed to investigate the interfacial chemical reaction between various optical glasses, different anti-stick coating designs and WC mold material. The results showed that, when its Co concentration got higher, WC mold had higher tendency to react with glasses. Efforts had been made in this study to investigate the effects of various protective coating designs. It was found that a Pt/Ir-compound coating on the mold could effectively suppress the interaction between the WC mold and optical glasses.

並列關鍵字

Optical Glass ； Glass Molding ； WC Mold ； Binder ； Diffusion ； Sticking ； Interfacial Reaction

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