摘要
用电沉积方法制备了NiCoCr-Al_2O_3泡沫合金,研究了镀液组分对泡沫合金组分的影响。结果表明,随着镀液中CrCl_3·6H_2O和Al_2O_3的增加,合金中Cr和Al_2O_3含量增加,Cr质量分数高于6．8％,镀层变黑, Al_2O_3质量分数高于8．1％时,合金变脆。合金只有在≥852．37℃热处理后形成了有利于高温抗氧化性的相态,在1 200℃热处理后,合金的高温氧化增重率最低。随着合金中Cr和Al_2O_3含量的增加,合金的高温抗氧化性提高,且Al_2O_3含量对高温抗氧化性影响更显著。
NiCoCr-Al2O3 foam alloy was electrodeposited, the effects of the composition of solution on the properties of foam alloy were studied. The contents of Cr and Al2O3 in the alloy increase with the increases of concentrations of CrCl3 · 6H2O and Al2O3 in bath, the alloy surface changes to black when Cr in the alloy is over 6. 8% ; the alloy becomes fragile when Al2O3 in the alloy is over 8.1%. It is foudn that only when the temperature was higher than 852. 37 ℃ did the phase which is propitious to antioxidation at high temperatures appear. The effects of treatment temperature on the antioxidation of the alloy at high temperatures were investigated, the mass gain was the lowest after the alloy was treated at 1 200℃. The effects of chromium and aluminium contents on the antioxidation of the alloy at high temperatures were also studied, the antioxidation of the alloy was improved with increasing the amount of Cr and Al2O3 in the alloy. It is found that Al2O3 promoted the antioxidation of the alloy.
出处
《应用化学》
CAS
CSCD
北大核心
2007年第2期188-191,共4页
Chinese Journal of Applied Chemistry
