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Effect of carbon additions on the microstructure of a single crystal Ni-based superalloy AM3 被引量:2
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作者 Yu Zhuhuan Liu Lin +3 位作者 Zhao Xinbao Zhang Weiguo Zhang Jun Fu Hengzhi 《China Foundry》 SCIE CAS 2010年第4期352-356,共5页
The microstructure of experimental nickel-base single crystal superalloys with different levels of carbon has been studied. The results indicated that with increasing carbon addition, the liquidus temperature decrease... The microstructure of experimental nickel-base single crystal superalloys with different levels of carbon has been studied. The results indicated that with increasing carbon addition, the liquidus temperature decreased obviously and the as-cast microstructures exhibited a decrease in the amount of γ/γ′ eutectic structure and an increase in the volume fraction of carbides. The carbides formed in these alloys were most script-type MC carbides which appeared continuous dendritic networks in the interdendritic region. The segregation behavior of element W was influenced by the carbon addition. 展开更多
关键词 基于 Ni superalloy 挑选水晶 分离 最容易溶解
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Effects of molecular structure parameters on ring-opening reaction of benzoxazines 被引量:4
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作者 刘欣 顾宜 《Science China Chemistry》 SCIE EI CAS 2001年第5期552-560,共9页
A colorless monoclinic crystal of dichloro-benzoxazine was obtained and examined by single crystal X-ray diffraction analysis. At the same time, molecular modeling analysis of nine benzoxazine compounds with different... A colorless monoclinic crystal of dichloro-benzoxazine was obtained and examined by single crystal X-ray diffraction analysis. At the same time, molecular modeling analysis of nine benzoxazine compounds with different substituting groups was performed. Both single crystal X-ray diffraction analysis and molecular modeling analysis provide a detailed picture of molecular structure on molecular level and show good consistence with each other. On the basis of structural analysis, the effects of molecular structure parameters on ring-opening polymerization of ben-zoxazines have been explored. 展开更多
关键词 BENZOXAZINES 挑选水晶 组织参数
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