发明名称 |
THERMAL BARRIER COATING WITH CONTROLLED DEFECT ARCHITECTURE |
摘要 |
Yttria stabilized zirconia (YSZ) particles (40) form a thermal barrier layer (58) on a metal substrate (24). The YSZ particles have a porous interior (52, 54) and a fully melted and solidified outer shell (50). The thermal barrier layer may have porosity greater than 12%, including porosity within the particles and inter-particle gap porosity. Inter-particle gaps may be greater than 5 microns. The thermal barrier layer may exhibit elastic hysteresis and an average modulus of elasticity of 15-25 GPa. A bond coat (44A, 44B) may be applied between the substrate and the thermal barrier layer. The bond coat may have a first dense MCrAlY layer (44A) on the substrate and a second rough, porous MCrAlY layer (44B) on the first MCrAlY layer, the bond layers diffusion bonded to each other and to the substrate. |
申请公布号 |
US2015140356(A1) |
申请公布日期 |
2015.05.21 |
申请号 |
US201314082661 |
申请日期 |
2013.11.18 |
申请人 |
Riggs Walter L.;Swanson Gunnar W.;Lammers Heiko |
发明人 |
Riggs Walter L.;Swanson Gunnar W.;Lammers Heiko |
分类号 |
F01D25/00 |
主分类号 |
F01D25/00 |
代理机构 |
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代理人 |
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主权项 |
1. A thermal barrier coating system comprising:
a bond coat on a substrate; a plurality of ceramic particles forming a thermal barrier layer on the bond coat, wherein the ceramic particles comprise a porous interior portion and a non-porous outer shell. |
地址 |
Rural Hall NC US |