CAJ | 학술논문

以Fe、Al元素粉末为原料，采用粉末冶金法，通过偏扩散/反应合成烧结，制备FeAl金属间化合物多孔材料。通过 XRD、SEM、EDS 等表征手段，研究多孔试样烧结过程中基础元素的挥发及孔结构变化行为，并进行室温状态下的抗水腐蚀实验。结果表明，在1000~1300℃之间，随温度升高，试样在真空烧结过程中的质量损失率升高，在最终烧结温度为1300℃、保温4 h的条件下，质量损失率为10.5%；而试样在氩气氛烧结过程中，随温度升高试样质量几乎没有变化；氩气氛烧结条件下制备的 FeAl 多孔材料的抗水腐蚀性能明显优于真空条件下制备的多孔试样。氩气氛条件下烧结制备FeAl金属间化合物多孔材料能够避免真空烧结过程中Al元素的挥发，从而有效提高FeAl金属间化合物多孔材料的抗水腐蚀性能。
이Fe、Al원소분말위원료，채용분말야금법，통과편확산/반응합성소결，제비FeAl금속간화합물다공재료。통과 XRD、SEM、EDS 등표정수단，연구다공시양소결과정중기출원소적휘발급공결구변화행위，병진행실온상태하적항수부식실험。결과표명，재1000~1300℃지간，수온도승고，시양재진공소결과정중적질량손실솔승고，재최종소결온도위1300℃、보온4 h적조건하，질량손실솔위10.5%；이시양재아기분소결과정중，수온도승고시양질량궤호몰유변화；아기분소결조건하제비적 FeAl 다공재료적항수부식성능명현우우진공조건하제비적다공시양。아기분조건하소결제비FeAl금속간화합물다공재료능구피면진공소결과정중Al원소적휘발，종이유효제고FeAl금속간화합물다공재료적항수부식성능。
Porous FeAl materials were prepared by powder metallurgy through partial diffusion and reactive synthesis using Fe、Al mixture powder as raw materials. The evaporation behavior of element and pore structure changes of porous FeAl were characterised by the XRD、SEM、EDS, and the experiments of water-corrosion-resistant were carried at the room temperature. The results show that the mass loss rate increases with increasing final sintering temperature from 1 000 ℃ to 1 300 ℃ under the vacuum sintering;the mass loss rate is 10.5%at the final vacuum sintering temperature of 1 300 ℃ and holding for 4h;However,the mass loss rate of porous FeAl little change with increasing final sintering temperature under argon atmosphere sintering. The water-corrosion-resistant properties of the fabricated porous FeAl under the argon atmosphere is better than those under the vacuum atmosphere. The evaporation of Al element of porous FeAl materials can be restrained successfully in the process of high temperature argon atmosphere sintering, thus it can improve the water-resistance corrosion performance of porous FeAl.