一前言为了提高涡轮热端镍基高温合金部件的使用寿命,通常在其表面上施加渗铝防护层。渗铝层在不同的合金上,以及在不同的工作环境下表现的耐蚀性,一直是人们所关心的问题之一。本文通过实验室的静态抗氧化试验、喷盐后加速氧化试验及燃气喷盐热腐蚀试验等手段来观察和评定三种合金渗铝层的高温耐蚀性,为实际使用提供参考数据。二试验过程 1 试样制备(1)三种合金的标称成分见表1。(2)试样规格 Preface To improve the service life of turbine hot-rolled nickel-base superalloy components, an aluminized barrier is usually applied to its surface. Aluminized layer on different alloys, as well as the performance of corrosion resistance in different work environments, has been one of the issues of concern. This paper observes and evaluates the high temperature corrosion resistance of the three aluminized aluminizing layers through the static anti-oxidation test in the laboratory, the accelerated oxidation test after salt spray and the hot corrosion test by gas spray salt, providing the reference data for practical use. Two test process 1 Sample Preparation (1) The nominal composition of the three alloys in Table 1. (2) Specimen specifications