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

• Main Authors: You-Ruei Lin, 林祐瑞
• Other Authors: 趙崇禮
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/80498967955450414975

碩士 === 淡江大學 === 機械與機電工程學系碩士班 === 98 === 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.