CAJ | 학술논문

在0.6 MPa的纯氢气氛中，采用金属/氢共晶定向凝固技术，制备得到不同Cr含量的GASAR多孔Cu-xCr合金试样(x=0,0.3%,0.5%,0.8%,1.0%,1.3%(质量分数，%))，并研究了Cr含量对多孔Cu-xCr合金气孔率和气孔平均直径的影响规律。结果表明：随Cr含量的逐渐增大，氢在合金熔体中的溶解度相应增加，导致多孔 Cu-xCr合金试样的气孔率缓慢增高；此外，随 Cr 含量的增加，受糊状区宽度变化的影响，气孔的平均直径呈先增大后减小的趋势。
재0.6 MPa적순경기분중，채용금속/경공정정향응고기술，제비득도불동Cr함량적GASAR다공Cu-xCr합금시양(x=0,0.3%,0.5%,0.8%,1.0%,1.3%(질량분수，%))，병연구료Cr함량대다공Cu-xCr합금기공솔화기공평균직경적영향규률。결과표명：수Cr함량적축점증대，경재합금용체중적용해도상응증가，도치다공 Cu-xCr합금시양적기공솔완만증고；차외，수 Cr 함량적증가，수호상구관도변화적영향，기공적평균직경정선증대후감소적추세。
GASAR porous Cu-xCr (x=0, 0.3%, 0.5%, 0.8%, 1.0%, 1.3% (mass fraction)) alloys were fabricated by the metal/hydrogen unidirectional solidification method under a hydrogen gas pressure of 0.6 MPa. The effect of the chromium content on the pore structure was investigated. The results show that the difference of hydrogen solubility between liquid and solid contributes to the increase of porosity with increasing Cr content. With increasing Cr content, the average pore diameter tends to firstly increase, and then decrease.