DZ 125镍基高温合金表面电子束物理气相沉积涂层的扩散行为研究

Diffusion Behavior of EB-PVD Coating on DZ 125 Nickel-based Super-alloy

研究了DZ 125镍基高温合金表面电子束物理气相沉积涂层的扩散行为。结果表明,DZ 125镍基高温合金表面电子束物理气相沉积60Co22Cr12Al1.2Y涂层互扩散区主要物相组成有3个,分别为白色的MC型碳化物、黑色的β相和灰色的γ/γ′相。二次涂覆后的60Co22Cr12Al1.2Y涂层具有较好的抗静态氧化能力。

The diffusion behavior of EB-PVD coating on DZ 125 nickel-based super-alloy was studied. The results show that the main phases in counter-diffusion zone of the EB-PVD 60Co22Cr12Al1.2Y coating are MC type carbide, β phase and γ/γ＇ phase. Static state oxidizability of the 60Co22Cr1 2Al1.2Y coating is improved after secondary depositing.