摘要：利用XRD,TGA,SEM/EDS等方法,研究了(Ni,Pd)Al涂层在纯Na2SO4以及Na2SO4+25%NaCl两种熔盐环境中的高温抗热腐蚀行为.结果表明,与NiAl涂层相比,(Ni,Pd)Al涂层900℃下具有较好的抗高温热腐蚀性能.添加改性元素Pd,阻碍了S进一步向涂层内层扩散,提高了铝化物涂层的抗高温腐蚀性能.
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