Passivation coating for flexible substrate mirrors
    4.
    发明授权
    Passivation coating for flexible substrate mirrors 失效
    柔性衬底镜的钝化涂层

    公开(公告)号:US4963012A

    公开(公告)日:1990-10-16

    申请号:US259634

    申请日:1988-10-19

    IPC分类号: C03C17/36 G02B1/10 G02B5/08

    摘要: A protective diffusion barrier for metalized mirror structures is provided by a layer or coating of silicon nitride which is a very dense, transparent, dielectric material that is impervious to water, alkali, and other impurities and corrosive substances that typically attack the metal layers of mirrors and cause degradation of the mirrors' reflectivity. The silicon nitride layer can be deposited on the substrate before metal deposition thereon to stabilize the metal/substrate interface, and it can be deposited over the metal to encapsulate it and protect the metal from corrosion or other degradation. Mirrors coated with silicon nitride according to this invention can also be used as front surface mirrors. Also, the silver or other reflective metal layer on mirrors comprising thin, lightweight, flexible substrates of metal or polymer sheets coated with glassy layers can be protected with silicon nitride according to this invention.

    摘要翻译: 用于金属化反射镜结构的保护性扩散屏障由氮化硅层或涂层提供,氮化硅层是非常致密,透明的介电材料,其不透水,碱和其它杂质以及典型地侵蚀镜子金属层的腐蚀性物质 并导致反射镜的反射率降低。 在其上沉积金属之前,氮化硅层可以沉积在衬底上,以稳定金属/衬底界面,并且可以将其沉积在金属上以封装并保护金属免受腐蚀或其它退化。 根据本发明的涂有氮化硅的镜子也可以用作前表面镜。 而且,根据本发明,可以用氮化硅保护包含薄玻璃层的薄的,重量轻的柔性基底的金属或聚合物片上的银或其他反射金属层。