本文采用真空熔炼法制备了Fe3Al金属间化合物,借助SEM,XRD,EDX等手段研究了Fe3Al在O-S混合气氛下800-1000℃的高温腐蚀行为及其中的晶相变化、晶界扩散过程,并从热力学和动力学方面对其腐蚀机理进行了分析.结果表明:Fe3Al合金在600-900℃范围内,具有较好的抗高温腐蚀性能.当温度超过1000℃或长时间腐蚀时,腐蚀速度迅速增加.
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