METHOD OF INDUCING POROUS STRUCTURES IN LASER-DEPOSITED COATINGS
    3.
    发明申请
    METHOD OF INDUCING POROUS STRUCTURES IN LASER-DEPOSITED COATINGS 审中-公开
    在激光沉积涂层中诱导多孔结构的方法

    公开(公告)号:US20160214176A1

    公开(公告)日:2016-07-28

    申请号:US14333543

    申请日:2014-07-17

    Abstract: A layer of a powdered material (4) is heated with an energy beam (10) such that at least one gas-generating agent (8) reacts to form at least one gaseous substance (14) to produce a void-containing coating (16) adhered to the surface of a substrate (2).The powdered material may contain a metallic material, a ceramic material, or both, and may also contain at least one of a flux material (32) containing the gas-generating agent and an exothermic agent (64). The heating may occur using a laser beam and may induce a melting or sintering of the powdered material to produce the void-containing coating. A gas turbine engine component exhibiting improved thermal and mechanical properties may be formed to include the void-containing coating, which may take the form of a bond coating, a thermal barrier coating, or both.

    Abstract translation: 用能量束(10)加热一层粉末材料(4),使得至少一种气体发生剂(8)反应形成至少一种气态物质(14)以产生含空隙的涂层(16) )附着在基板(2)的表面上。 粉状材料可以含有金属材料,陶瓷材料或两者,并且还可以含有含有气体发生剂的助焊剂材料(32)和放热剂(64)中的至少一种。 可以使用激光束进行加热,并且可以引起粉末材料的熔化或烧结以产生含空隙的涂层。 可以形成具有改善的热和机械性能的燃气涡轮发动机部件,以包括可以采取粘合涂层,热障涂层或两者的形式的含空隙的涂层。

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