PROCESS FOR PRODUCING A THERMAL BARRIER IN A MULTILAYER SYSTEM FOR PROTECTING A METAL PART AND PART EQUIPPED WITH SUCH A PROTECTIVE SYSTEM
    4.
    发明申请
    PROCESS FOR PRODUCING A THERMAL BARRIER IN A MULTILAYER SYSTEM FOR PROTECTING A METAL PART AND PART EQUIPPED WITH SUCH A PROTECTIVE SYSTEM 审中-公开
    在用于保护金属部件的多层系统中生产热障的方法和装备有这种保护系统的部件

    公开(公告)号:US20130344349A1

    公开(公告)日:2013-12-26

    申请号:US14003339

    申请日:2012-03-07

    IPC分类号: F01D25/08 F01D5/28 B05D3/06

    摘要: A method for producing a thermal barrier in a multilayered system for protecting a metal part made of superalloy, by producing a thermal treatment by flash sintering protection materials in layers superposed on the metal part in an SPS machine enclosure. The layers contain, on a superalloy substrate, at least two layers of zirconium-based refractory ceramics. A metal part is produced according to a SPS flash sintering method and contains a superalloy substrate, a metal sub-layer, a TGO oxide layer and the thermal barrier formed by the method. A first ceramic is an inner ceramic designed to have a substantially higher expansion coefficient. An outer ceramic is designed to have at least lower thermal conductivity, and at least one of a sintering temperature or maximum operating temperature that is substantially higher. The thermal barrier has a composition and porosity gradient from the metal sub-layer to the outer ceramic.

    摘要翻译: 一种用于在用于保护由超级合金制成的金属部件的多层系统中制造热障的方法,通过在SPS机器壳体中重叠在金属部件上的层中通过闪蒸烧结保护材料进行热处理。 这些层在超级合金基底上含有至少两层锆基耐火陶瓷。 根据SPS快速烧结法制造金属部件,并且包含超合金基板,金属子层,TGO氧化物层和通过该方法形成的热障壁。 第一陶瓷是设计成具有显着更高膨胀系数的内陶瓷。 外陶瓷被设计成具有至少较低的热导率,并且烧结温度或最高工作温度中的至少一个基本上更高。 热屏障具有从金属子层到外部陶瓷的组成和孔隙率梯度。