Method for modifying the surface of a thermal barrier coating, and related articles
    3.
    发明授权
    Method for modifying the surface of a thermal barrier coating, and related articles 有权
    改性热障涂层表面的方法及相关物品

    公开(公告)号:US06180260B2

    公开(公告)日:2001-01-30

    申请号:US09324551

    申请日:1999-06-03

    IPC分类号: B32B1500

    摘要: A method for providing a substantially-smooth protective coating on a metal-based substrate is disclosed. It comprises the steps of: (a) applying a thermal barrier coating over the substrate by plasma-spraying; (b) plasma-heating the applied coating according to a time- and temperature schedule sufficient to re-melt the surface region of the coating, allowing it to flow and smoothen; and then (c) cooling the surface region to a temperature below its melting point. The thermal barrier coating is often zirconia-based, e.g., yttria-stabilized zirconia. After being cooled, the surface is much smoother than when originally applied, thereby allowing the coating to be used in a higher-temperature environment.

    摘要翻译: 公开了一种在金属基底上提供基本平滑的保护涂层的方法。 其包括以下步骤:(a)通过等离子体喷涂在衬底上施加热障涂层;(b)根据足以重新熔化涂层表面区域的时间和温度程序等级加热涂覆的涂层 ,让它流畅平滑; 然后(c)将表面区域冷却到低于其熔点的温度。热障涂层通常是基于氧化锆的,例如氧化钇稳定的氧化锆。 冷却后,表面比最初施加的表面更光滑,从而允许涂层在较高温度的环境中使用。

    Protection of thermal barrier coating with an impermeable barrier coating
    7.
    发明授权
    Protection of thermal barrier coating with an impermeable barrier coating 失效
    用不透水屏障涂层保护热障涂层

    公开(公告)号:US5871820A

    公开(公告)日:1999-02-16

    申请号:US702370

    申请日:1996-08-23

    IPC分类号: C04B35/622 B05D7/14 B05D1/36

    CPC分类号: C04B35/62222 Y02T50/67

    摘要: A method is provided for protecting thermal barrier coatings deposited on parts from the deleterious effects of environmental contaminants at operating temperatures. The method uses an impermeable barrier coating with the thermal barrier coating, where the impermeable barrier coating prevents environmental contaminants and resulting contaminant compositions from infiltrating openings in thermal barrier coatings during service at operating temperatures.

    摘要翻译: 提供了一种保护沉积在零件上的热障涂层免受环境污染物在操作温度下的有害影响的方法。 该方法使用具有热障涂层的不可渗透的阻隔涂层,其中不可渗透的阻隔涂层防止环境污染物和所产生的污染物组合物在工作温度下使用期间在热障涂层中渗透开口。