研究了快速凝固/热压Al掺杂FeSi2基合金中的微观组织特征以及原位生成氧化物颗粒对热电材料电学性能的影响.结果表明,随着对快速凝固粉末氧化处理时间的延长,p型掺杂的β-FeSi2半导体会先转变成n-型,然后又转变成p-型半导体,并存在"热伏极性反转"现象.氧化处理降低β-FeSi2基热电材料的电学性能,未经氧化处理的FeAl0.1Si2材料在测量温度范围内的功率因子最大,在500℃达到465μW.m-1.K-1.
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