【作者】 何子博；

【导师】 冉均国；

【作者基本信息】 四川大学 ， 材料学， 2006， 硕士

【摘要】 眼睛是人类获取外界信息最重要的器官,但许多人由于一定的问题都需要进行视力矫正,而眼镜作为“人类应用最广泛的一种光学治疗的药物”,对人类生活有很大的改善和提高。用来做眼镜片的材料,最初是无机物,之后发现了重量轻、光学性能好的透明塑料,其中聚碳酸酯(PC)以其优良的光学和机械性能最具有应用潜力。但是聚碳酸酯镜片最大缺陷就是镜片本身硬度低,表面易被磨损,抗刮擦能力差,这成为制约树脂镜片使用寿命的基本问题。目前主要通过镀膜工艺在镜片上沉积加硬膜,提高表面耐磨损性,解决刮擦带来的危害和延长镜片的使用寿命。以有机硅树脂系列作为加硬膜,镜片的硬度和耐磨损性得到了很大的提高,但也存在着膜层较厚、不均匀等不足之处。而类金刚石(DLC)薄膜以良好的光学和机械性能,只要很薄一层(<0.1μm)就可以显著提高镜片的表面硬度,增加耐磨损性,延长镜片的使用寿命。本实验用射频辉光放电等离子体化学气相沉积(RF-PECVD)设备在聚碳酸酯(PC)镜片上沉积类金刚石(DLC)膜,着重研究甲烷浓度(CH4/Ar的体积百分数)、沉积功率和沉积时间等工艺参数对沉积DLC薄膜的组成、结构和性能的影响。用电子扫描电镜(SEM)、Raman光谱和X光电子能谱分析薄膜的组成和结构后表明所沉积的薄膜中类金刚石和金刚石含量﹥80%。研究工艺参数对涂覆DLC薄膜耐磨性和附着性能的影响,通过摩擦磨损试验、落砂试验和更多还原

【Abstract】 Eyes are the most important organs to get the external information for human beings, but many people need correct their sight for some problems of their eyes. Eye glasses , being“the most broad application of ophthalmic curing drugs for human”, can improve the sistuation in life for those people.Originally inorganic materials of glass were used for ophthalmic lens, and then optical plastics with light weight, good optical properties were produced, of which polycarbonates(PC) are the most potential due to its good optical and mechanic properties. However, PC lens are inherently soft and easily scratched or worn out in abrasive conditions, and thus they essentially limited the usage time of plastic lens. Now hard protective films on plastic lens are employed to enhance the resistance, reduce the scratch damage and prolong the usage time.Silicone was used as abrasion-resistant coatings to improve the hardness and resistance, but with the shortage of big thickness and bad uniformity. Diamond-like carbon films , just being thin less than 0.1μm, can enhance the hardness and resistance of lens, prolong the usage time.DLC films were deposited on PC by the method of RF-PECVD. The influnce of depositing parameters—methane concentration (volume percent of CH4/Ar), depositing power and time—on the composition, the microstructure and the properties of DLC films was discussed.更多还原