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活塞阳极氧化表面气泡形成的机理及影响 魏晓伟1,王平1 (1.西华大学材料学院,四川,成都,610039) 摘要:对铝合金阳极氧化区气泡形成的机理,影响和防止措施进行了探讨.在氧化表面常产生并聚集大量气泡(气泡主要是阳极热量集中处形成的水蒸气气泡和氧离子形成的氧气气泡),导致电压较快地增大而易出现"打火"现象,严重影响活塞氧化膜的质量和厚度的均匀性.利用自制脉冲恒流电源等装置,对ZL109活塞顶面硬质阳极氧化过程中气泡的形成,生长进行了研究.结果表明,快速排除活塞顶面氧化过程中的气泡,可以有效地防止"打火"现象,提高氧化膜质量. 关键词:阳极氧化; ZL109活塞; 气泡; 形成机理; [全文内容正在添加中] ......
Thermostability of Al-Cu-Mg-Fe-Ni Alloy with Trace Scandium and Zirconium Yu Kun1,Li Songrui1,Li Wenxian1 (1.Department of Materials Science and Engineering, Central South University of Technology,Changsha 410083, P. R. China) 摘要:Three Al-Cu-Mg-Fe-Ni-Sc-Zr ingot metallurgy alloys with different compositions had been prepared. The hardness variations of cold-rolled alloy plates during annealing......
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J. Cent. South Univ. (2012) 19: 2073-2080 DOI: 10.1007/s11771-012-1247-3 Hot-compression behavior of Al alloy 5182 TANG Jian-guo(唐建国), HUANG Xing-xing(黄星星), ZHANG Xin-ming(张新明) School of Materials Science and Engineering, Central South University, Changsha 410083, China ? Central South University Press and Springer-Verlag Berlin Heidelberg 2012 Abstract: Hot-compression of aluminum alloy 5182......
Microstructure evolution of TA15 titanium alloy during hot power spinningCHEN Yong, XU Wen-chen, SHAN De-bin, GUO Bin(School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)Abstract:The microstructure evolution of TA15 titanium alloy during hot power spinning was studied. Effects of wall reduction on microstructure evolution of TA15 titanium alloy were......
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University), Changsha 410083, China)Abstract:The elevated-temperature mechanical properties and thermal stability of Al-Cu-Mg-Ag heat-resistant alloy were studied by tensile test, transmission electron... to the increase of the precipitations number and the decrease of the size. The same conclusions are drawn in the study of increasing Mg content. The alloy possesses excellent thermal stability. At 100-150 °C......