采用有限元法计算了涂层结构、材料成分等对等离子喷涂Sm2Zr2O7/NiCoCrAlY功能梯度热障涂层热冲击性能的影响.结果表明:径向热应力在试样边沿急剧降低,而轴向热应力在边沿处发生从压应力向拉应力的突变；从基体至涂层表面,涂层中的径向冲击热应力逐渐增大,增加涂层层数可缓解热应力；材料组成对涂层的冲击热应力影响不明显.所研究的1357功能梯度热障涂层具有最好的抗热冲击性能.
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