Method of making an apparatus for transpiration cooling of substrates such as turbine airfoils
    43.
    发明授权
    Method of making an apparatus for transpiration cooling of substrates such as turbine airfoils 有权
    制造涡轮机翼等基板蒸发冷却装置的方法

    公开(公告)号:US09579722B1

    公开(公告)日:2017-02-28

    申请号:US14596307

    申请日:2015-01-14

    Abstract: A method and apparatus for generating transpiration cooling using an oxidized porous HTA layer metallurgically bonded to a substrate having micro-channel architectures. The method and apparatus generates a porous HTA layer by spreading generally spherical HTA powder particles on a substrate, partially sintering under O2 vacuum until the porous HTA layer exhibits a porosity between 20% and 50% and a neck size ratio between 0.1 and 0.5, followed by a controlled oxidation generating an oxidation layer of alumina, chromia, or silica at a thickness of about 20 to about 500 nm. In particular embodiments, the oxidized porous HTA layer and the substrate comprise Ni as a majority element. In other embodiments, the oxidized porous HTA layer and the substrate further comprise Al, and in additional embodiments, the oxidized porous HTA layer and the substrate comprise γ-Ni+γ′-Ni3Al.

    Abstract translation: 一种使用冶金结合到具有微通道结构的衬底的氧化多孔HTA层产生蒸发冷却的方法和设备。 该方法和装置通过在基底上铺展通常为球形的HTA粉末颗粒产生多孔HTA层,在O 2真空下部分烧结直到多孔HTA层呈现20%至50%的孔隙率和0.1至0.5之间的颈部尺寸比,随后 通过控制氧化产生厚度为约20至约500nm的氧化铝,氧化铬或二氧化硅的氧化层。 在具体实施方案中,氧化的多孔HTA层和衬底包含Ni作为多数元素。 在其它实施方案中,氧化的多孔HTA层和基底还包含Al,并且在另外的实施方案中,氧化的多孔HTA层和基底包含γ-Ni +γ'-Ni3Al。

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