有色金属材料与工程2024，Vol.45Issue(2)：17-26,10.DOI:10.13258/j.cnki.nmme.20230319001
NiCoCrAlYTa粘结层与镍基高温合金基体的界面高温互扩散行为
Interdiffusion behavior between NiCoCrAlYTa coating and Ni-based superalloy at high temperature
摘要
Abstract
NiCoCrAlYTa coating was deposited on GH3128 superalloy substrate by vacuum plasma spraying(VPS),and then the specimens were heated treatment for different time at 1100℃was carried.The element interdiffusion behavior was evaluated between the coating and the GH3128 superalloy were characterized by scanning electron microscopy(SEM)and energy dispersive spectrometer(EDS).The results show that thicknesses of the interdiffusion zone(IDZ)and the secondary reaction zone(SRZ)increase with the elongation of heat treatment time,and the growth of the topological close-packed(TCP)phases can be observed in the SRZ.Al,Ta and Co elements diffuse from the coating to the substrate,while Ni,W and Mo elements diffuse from the substrate to the coating.According to the EDS results of the content of elements at the interface between the coating and the substrate,the diffusion coefficient of the above elements at the interface can be calculated.Therefore,the diffusion rate of each element can be achieved during high temperature heat treatment process,which discovers the elements diffusion law at the interface between the coating and the substrate.关键词
镍基高温合金/二次反应区/扩散系数/拓扑密堆相/真空等离子体喷涂Key words
Ni-based superalloy/secondary reaction zone/diffusion coefficient/topological close-packed phase/vacuum plasma spraying分类
金属材料引用本文复制引用
蔡汉文,钟兴华,赵华玉,庄寅,盛靖,倪金星,李伟,陶顺衍..NiCoCrAlYTa粘结层与镍基高温合金基体的界面高温互扩散行为[J].有色金属材料与工程,2024,45(2):17-26,10.基金项目
国家科技重大专项资助项目(2017-VI-0010-0082) （2017-VI-0010-0082）
上海市自然科学基金资助项目(21ZR1472800) （21ZR1472800）
