EB-PVD热障涂层对IC10合金力学性能的影响

采用电弧离子镀技术在IC20合金基体上制备NiCrAlYSi粘结层，利用电子束物理气相沉积（EB—PVD）技术在粘结层上制备YSZ陶瓷面层。研究了YSZ热障涂层对IC10合金拉伸、持久、疲劳性能的影响。结果表明：IC10合金沉积YSZ热障涂层后，980℃／200MPa高温持久寿命与IC10合金相当；900℃高温抗拉强度σb、屈服强度σ0.2、伸长率占和断面收缩率砂与基体相比，基本保持不变；室温抗拉强度σb。屈服强度σ0.2：与基体相比稍有下降；800℃／447MPa疲劳寿命与基体合金相当。因此，IC10合金沉积TBCs涂层后，对IC10合金力学性能无明显影响，不影响合金的实际使用。

Effect of EB-PVD Thermal Barrier Coating on Mechanical Properties of IC10 Alloy

The Y2O3 stabilized ZrO2 thermal barrier coatings with arc ion plated NiCrAlYSi bond coating were deposited by EB-PVD technique on the IC10 alloy substrate. The effect of YSZ thermal barrier coating on the tensile strength,yield strength at 900℃ and the rotating bending fatigue life were studied. Compared IC10 alloy with thermal barrier coating to IC10 alloy,the results of the stress rupture life under 980℃/200 MPa conditions, the tensile intension and yield intension at 900℃ and the rotating bending fatigue life under 800℃/447 MPa were identical. But it's room temperature tensile strength and yield strength decreases in some sort. So the EB-PVD TBCs process does not affect the mechanical properties of IC10 substrate.