CAJ | 학술논문

通过凝胶注模成形制备出的Mo凝胶生坯经过干燥、脱脂以及烧结处理后，得到具有多孔结构的Mo骨架，分析烧结温度对Mo骨架孔隙率及微观结构的影响。通过对Mo骨架进行渗铜处理得到Mo-Cu烧结体，通过能谱分析仪分析熔渗温度对Mo-Cu烧结体中Cu含量的影响；运用XRD、SEM对Mo-Cu烧结体进行性能表征，并测试其热膨胀系数。结果表明，凝胶注模成形的 Mo 生坯经过烧结后具有较好的孔隙结构；Mo 骨架渗铜处理后的Mo-Cu烧结体具有Mo与Cu两相独立存在的且由Cu包覆Mo的结构，熔渗温度为1400℃时，其膨胀系数(100℃)达6.35765×10?6/℃。
통과응효주모성형제비출적Mo응효생배경과간조、탈지이급소결처리후，득도구유다공결구적Mo골가，분석소결온도대Mo골가공극솔급미관결구적영향。통과대Mo골가진행삼동처리득도Mo-Cu소결체，통과능보분석의분석용삼온도대Mo-Cu소결체중Cu함량적영향；운용XRD、SEM대Mo-Cu소결체진행성능표정，병측시기열팽창계수。결과표명，응효주모성형적 Mo 생배경과소결후구유교호적공극결구；Mo 골가삼동처리후적Mo-Cu소결체구유Mo여Cu량상독립존재적차유Cu포복Mo적결구，용삼온도위1400℃시，기팽창계수(100℃)체6.35765×10?6/℃。
Molybdenum green body was prepared by gelcasting. The green body was turned into porous Mo-skeleton after drying, degreasing and sintering. The effect of sintering temperature on porosity and microstructure of Mo-skeleton was investigated. Then the Mo-skeleton was processed by Cu- infiltrating for getting Mo-Cu body. The influence of infiltrating temperature on content of Cu in Mo-Cu body was analysised through EDS, the property of Mo-Cu sintering body was characterized by XRD and SEM. And the thermal expansivity of the body was measured. The results show that the molybdenum green body presents a good porous structure. The Mo-Cu sintering body prepared by Cu-infiltrating shows that the Mo and Cu exist separately with the structure of Cu coating Mo. The expansion coefficient of Mo-Cu sintering body is 6.357 65×10?6/℃at 100℃.