To clarify the corrosion mechanism associated with the precipitate of T1(Al2CuLi)in Al-Li alloys,the simulated bulk precipitate of T1 was fabricated through melting and casting.Its electrochemical behavior and couplin...To clarify the corrosion mechanism associated with the precipitate of T1(Al2CuLi)in Al-Li alloys,the simulated bulk precipitate of T1 was fabricated through melting and casting.Its electrochemical behavior and coupling behavior with α(Al)in 3.5% NaCl solution were investigated.Meanwhile,the simulated Al alloy containing T1 particle was prepared and its corrosion morphology was observed.The results show that there exists a dynamic conversion corrosion mechanism associated with the precipitate of T1.At the beginning,the precipitate of T1 is anodic to the alloy base and corrosion occurs on its surface.However,during its corrosion process,its potential moves to a positive direction with immersion time increasing,due to the preferential dissolution of Li and the enrichment of Cu.As a result,the corroded T1 becomes cathodic to the alloy base at a later stage,leading to the anodic dissolution and corrosion of the alloy base at its adjacent periphery.It is suggested that the localized corrosion associated with the precipitate of T1 in Al-Li alloys is caused by the alternate anodic dissolution of the T1 precipitate and the alloy base at its adjacent periphery.展开更多
From both historical and artistic points of view,Qinqiang Opera can be considered a significant genre outside the realms of Peking Opera and Kunqu Opera.The research on Qinqiang Opera has long been a focal point in th...From both historical and artistic points of view,Qinqiang Opera can be considered a significant genre outside the realms of Peking Opera and Kunqu Opera.The research on Qinqiang Opera has long been a focal point in the research on local operas with particular emphasis from a local perspective of the Yisu Art Troupe,a key and hot topic in the studies of Qinqiang Opera.Taking the Yisu Art Troupe as a case study to scrutinize and address the intricacies within the process of modernization of traditional Chinese opera proved to be beneficial.Since the 20th century,studies on the Yisu Art Troupe have evolved from scattered and impressionistic self-narratives into systematic and theoretical academic research.In the new century,scholars,such as Xin Xuefeng,Li Youjun,and Guo Hongjun,have been especially diligent with studies in this field.As Xin Xuefeng is relatively unknown due to his emphasis on traditional opera music,Li Youjun and Guo Hongjun have gradually emerged as important contemporary scholars in the study of the Yisu Art Troupe.Guo and Li not only further theorize the study of the Yisu Art Troupe but also conduct in-depth and meticulous studies on the nature of the Yisu Art Troupe,the establishment of the director-centered mode in Qinqiang Opera,the social function,and the playwriting of the Yisu Art Troupe by examining and reflecting it within the broader context of the modernization of traditional Chinese opera in the 20th century.展开更多
基金Project(50401012) supported by the National Natural Science Foundation of China
文摘To clarify the corrosion mechanism associated with the precipitate of T1(Al2CuLi)in Al-Li alloys,the simulated bulk precipitate of T1 was fabricated through melting and casting.Its electrochemical behavior and coupling behavior with α(Al)in 3.5% NaCl solution were investigated.Meanwhile,the simulated Al alloy containing T1 particle was prepared and its corrosion morphology was observed.The results show that there exists a dynamic conversion corrosion mechanism associated with the precipitate of T1.At the beginning,the precipitate of T1 is anodic to the alloy base and corrosion occurs on its surface.However,during its corrosion process,its potential moves to a positive direction with immersion time increasing,due to the preferential dissolution of Li and the enrichment of Cu.As a result,the corroded T1 becomes cathodic to the alloy base at a later stage,leading to the anodic dissolution and corrosion of the alloy base at its adjacent periphery.It is suggested that the localized corrosion associated with the precipitate of T1 in Al-Li alloys is caused by the alternate anodic dissolution of the T1 precipitate and the alloy base at its adjacent periphery.
基金funded by the National Social Science Fund of China’s project“Research on the Modernization Construction of Chinese Drama Theory in the 20th Century”(Approval Number:19BZW098)。
文摘From both historical and artistic points of view,Qinqiang Opera can be considered a significant genre outside the realms of Peking Opera and Kunqu Opera.The research on Qinqiang Opera has long been a focal point in the research on local operas with particular emphasis from a local perspective of the Yisu Art Troupe,a key and hot topic in the studies of Qinqiang Opera.Taking the Yisu Art Troupe as a case study to scrutinize and address the intricacies within the process of modernization of traditional Chinese opera proved to be beneficial.Since the 20th century,studies on the Yisu Art Troupe have evolved from scattered and impressionistic self-narratives into systematic and theoretical academic research.In the new century,scholars,such as Xin Xuefeng,Li Youjun,and Guo Hongjun,have been especially diligent with studies in this field.As Xin Xuefeng is relatively unknown due to his emphasis on traditional opera music,Li Youjun and Guo Hongjun have gradually emerged as important contemporary scholars in the study of the Yisu Art Troupe.Guo and Li not only further theorize the study of the Yisu Art Troupe but also conduct in-depth and meticulous studies on the nature of the Yisu Art Troupe,the establishment of the director-centered mode in Qinqiang Opera,the social function,and the playwriting of the Yisu Art Troupe by examining and reflecting it within the broader context of the modernization of traditional Chinese opera in the 20th century.
