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Trans. Nonferrous Met. Soc. China 31(2021) 2220-2231 Correlations among stress corrosion cracking, grain-boundary microchemistry, and Zn content in high Zn-containing Al-Zn-Mg-Cu alloys Ding... among the corrosion behaviour, grain-boundary microchemistry, and Zn content in Al-Zn-Mg-Cu alloys were studied using stress corrosion cracking (SCC) and intergranular corrosion (IGC) tests, combined......
:TG146.2 文献标志码:A Effect of aging treatment on corrosion properties of high Zn content super-high strength Al alloy RAN Fan-qing, CHEN Zi-yong, GAO Kun-yuan, NIE Zuo-ren (School... susceptibility of the high Zn content super-high strength Al alloy was studied using optical microscopy (OM), scanning electron microscopy (SEM) and transmission election microscopy (TEM). The results show......
that the lattice parameters of nano-scale Ni(OH)2 are changed and the agglomeration of particles becomes obvious with the increased Zn-doped content. Compared with un-doped one, the discharge specific capacities... is still above 85% of its initial capacity discharged at 0.2C. Therefore, a suitable Zn-doped content is beneficial to improving the discharge performance of nano-scale Ni(OH)2. Key words: nano......
合金,通过末端淬火的方法研究其淬火敏感性,结合透射电镜微观组织观察结果就m(Zn)/m(Mg)对淬火敏感性的影响机理进行分析和探讨.研究结果可为密度更低的高强高韧高淬透性Al-Zn-Mg-Cu合金的研发提供参考. 1 实验 通过熔炼铸造获得Al-3Zn-4.5Mg-1Cu,Al-4Zn- 3.5Mg-1Cu和Al-5Zn-3.5Mg-1Cu 3种合金.原材料采用高纯铝锭,锌锭,镁锭,铝... content on quench sensitivity of Al-Zn-Mg-Cu aluminum alloys[J]. Journal of Alloys and Compounds, 2011, 509(13): 4636-4642. [8] LIVAK R J, PAPAZIAN J M. Effects of copper on precipitation and quench......
2010 Abstract: The roles of Zn content and thermo-mechanical treatment in affecting microstructures and mechanical properties of Mg-x%Zn-1%Mn (mass fraction, x=4, 5, 6, 7, 8, 9) wrought Mg alloys were investigated. The microstructure was extremely refined by dynamic recrystallization (DRC) during extrusion. With increasing Zn content, the DRC grains tended to grow up, at the same time, more......
content means a lower floatability of sphalerite [7,19,20]. Furthermore, the determination of the Fe and Zn contents in sphalerite can be used for the correct estimation of the Zn content within an ore... studies only used 2-3 methods to determine the content of Fe or Zn in natural sphalerite, and rarely compared the difference between the results of different methods. Besides, no research was found......
Zn(Ⅱ)-(NH4)2SO4-H2O体系中锌的电积宋丹娜1,张鹏2,唐谟堂3(1.北京市环境科学研究院2.中南大学 冶金科学与工程学院,长沙 4100833.中南大学 冶金科学与工程学院, 长沙 410083)摘 要:研究采用Zn(Ⅱ)-(NH4)2SO4-H2O体系从高氟和氯锌烟尘中回收锌新工艺的电积过程.结果表明,在阴极电流密度400A·m-2,温度60℃,起始Zn2+浓度60g·L-1,异极矩3cm,时间4h的最佳电积条件下,所得电锌品位>99.97%,阴极锌析出率为83.09%,电流效率92.88%,电能消耗3618kW.h.关键词:冶金技术; 锌电积; 硫酸铵; 高氟氯锌烟尘; 电解槽......
Abstract: The effects of Zn content on strength and wear performance of Al-12Si-3Cu alloy synthesized by gravity casting were systematically investigated. The microstructure and mechanical properties...-Zn alloys increased with increasing Zn content, but tendency in the tensile and compressive strengths and ductility reversed after adding 1.5%-2% Zn. In addition, the friction coefficient and volume......
J. Cent. South Univ. (2016) 23: 3051-3059 DOI: 10.1007/s11771-016-3368-6 Effects of minor Zn content on microstructure and corrosion properties of Al-Mg alloy ZHAO Jing-wei(赵经纬)1, LUO Bing-hui(罗兵辉)1... indistinct. In this work, the effects of Zn element, especially the Zn content, on the microstructure and corrosion properties have been investigated. In order to have a better understanding......
Zn含量较低,AB2和AB5型相的含量并不发达,最终形成了高丰都的A2B7型相. 表2 三种合金的晶胞参数和相对含量 Table 2 Crystal structure, cell parameters and phase content of three kinds of alloys 图3 Zn在不同相中的固溶量和各相丰度随Zn含量的变化 Fig. 3...力几乎相当.但需要注意的是,合金3#中含有更多的AB5型相.作者前期的研究[32]表明,AB5型相的显微硬度较高,是更易粉化的相.因此,虽然合金1#和3#粉化特征相似,但考虑两者相组成的差异,Zn的加入还是有利于合金抗粉化能力的改善. 表4 合金1#和3#浸泡后的氧含量及气态循环后的粒度分析 Table 4 Oxygen content and particle size......