Precision glass molding is a significant approach for mass production of high precision glass lenses. However, the adhesion problem, which occurs between glass and mold, seriously affects the lenses quality and mold life. Thus, there is an urgent need to develop an anti-adhesion coating for the mold inserts. With the continuous demand for glass lenses, it is essential to develop an anti-adhesive coating that can be adapted to both visible optical glass and infrared glass. In this study, an α-Al₂O₃ multilayer coating is deposited on tungsten carbide substrate by chemical vapor deposition and the surface roughness of the coating is improved from 100 nm to 10 nm in Ra by ultra-precision grinding with optimized machining parameters. Two currently used coatings of the rare metal Ta multilayer coating and diamond-like carbon coating are compared with the newly developed coating. Typical dense barium crown optical glass D-ZK3 and chalcogenide glass IRG206 are chosen as testing materials for wettability tests and practical precision glass molding experiments. The experimental results show that α-Al₂O₃ coating exhibits good anti-adhesion property for both glass materials, while Ta coating is not proper for IRG206 chalcogenide glass and diamond-like carbon coating is not suitable for D-ZK3 optical glass. Considering its excellent properties in oxidation resistance and service life, the α-Al2O3 multilayer coating would be a highly potential anti-adhesion coating for precision glass molding.

精密玻璃成型是大规模生产高精度玻璃镜片的重要方法。但是，玻璃和模具之间发生的粘合问题严重影响了镜片的质量和模具寿命。因此，迫切需要开发用于模具嵌件的防粘涂层。随着对玻璃镜片的不断需求，开发一种可同时适用于可见光学玻璃和红外玻璃的防粘涂层至关重要。在这项研究中，α-Al系₂ ö ₃通过化学气相沉积将多层涂层沉积在碳化钨基材上，并通过优化的加工参数进行超精密研磨，将涂层的表面粗糙度在Ra中从100 nm提高到10 nm。将目前使用的两种稀有金属Ta多层涂层和类金刚石碳涂层与新开发的涂层进行比较。选择典型的致密钡冠光学玻璃D-ZK3和硫属化物玻璃IRG206作为润湿性测试和实际精密玻璃成型实验的测试材料。实验结果表明，α-Al系₂ ö ₃镀膜对两种玻璃材料都具有良好的抗粘附性能，而钽镀膜不适用于IRG206硫属化物玻璃，类金刚石碳镀膜不适用于D-ZK3光学玻璃。考虑到其优异的抗氧化性能和使用寿命，α-Al2O3多层涂层将是用于精密玻璃成型的高潜力防粘涂层。