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采用 ＥＢ—ＰＶＤ的方法，连续蒸发按一定组分比混合的 Ａ１＋Ａｌ２Ｏ３＋ＺｒＯ２混合源，在 Ｎｉ基高温合金基体上制备了一种新型结构的热障涂层，ＳＥＭ和ＥＤＳ的观察、分析表明，这种涂层实现了由金属粘结层向陶瓷顶层的微观结构的梯度过渡和化学成分的连续变化．涂层的基本结构为 ＮｉＣｏＣｒＡｌＹ／ Ｎｉ３Ａｌ／ Ｎｉ３Ａｌ＋Ａｌ２Ｏ３／ Ａｌ２Ｏ３／ Ａｌ２Ｏ３＋ ＺｒＯ２／ ＺｒＯ２这种梯度热障涂层在１０５０℃的抗高温氧化性能优于传统的二层结构的热障涂层经１０５０℃保温３０ ｍｉｎ，迅速冷却至室温的热循环测试３００次后，涂层没有发生剥落，显示了良好的抗热震性能
A new structured thermal barrier coating was prepared on the Ni-based superalloy substrate by EB-PVD method. The results of SEM and EDS showed that this kind of The coating achieves a gradual transition of the microstructure from the metal bonding layer to the ceramic top layer and a continuous change of the chemical composition. The basic structure of NiCoCrAlY / Ni3Al / Ni3Al + Al2O3 / Al2O3 / Al2O3 + ZrO2 / ZrO2 gradient thermal barrier coating at 1050 ℃ high temperature oxidation resistance is better than the traditional two-layer structure of the thermal barrier coating by 1050 ℃ insulation 30 min, rapid cooling to room temperature thermal cycling test 300 times, the coating did not spall, showing good thermal shock resistance