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the strength of the WeldaliteTM210 alloy. But the small addition of Zn has unfavourable effect on the ductility of the WeldaliteTM210 alloy. Key words: WeldaliteTM210 Al-Li alloy; Zn; microstructure...2为WeldaliteTM210-free Zn合金. 表1 实验合金的化学成分分析结果 Table 1 Measured chemical compositions of experimental alloy 2 结果及分析 2.1 时效硬化特性 图1所示为不同合金在T6和T8状态下的硬度与时效时间曲线.从图1(a)可知,与一般的Al......
移动使Fe-Al化合物层失稳破裂.Zn-11%Al-x%Mg合金中Mg元素可明显推迟液Zn进入镀层中Fe-Al合金层的时间,使Fe-Al合金层更加稳定和致密.关键词:锌铝镁合金;凝固;微观组织;生长动力学;扩散;热浸镀锌;...Zn-11%Al,Zn-11%Al-1.5%Mg,Zn-11%Al-3%Mg和Zn-11%Al-4.5%Mg合金熔池中进行不同时间的热浸镀,使用X射线衍射仪,扫描电子显微镜,能谱仪等仪器设备,研究Mg含量对Zn-11%Al合金镀层凝固组织和镀层中Fe-Al合金层生长的影响.结果表明:Zn-11%Al合金镀层凝固组织由富Al相和Zn/Al二元共晶组成;随着Zn-11%Al-x%Mg合金中Mg含量的增加......
,研究电流密度,温度和脉冲参数等因素对镀层的影响.结果表明:阴极反应为准可逆反应,锌离子在镍电极和钨电极上形核是三维瞬时形核半球形扩散长大过程,直流电流密度为4mA/cm2,温度为80 ℃时,镀层质量最好；脉冲电沉积得到的镀层要优于直流电沉积得到的镀层,尤其在脉冲宽度为2ms,脉冲间隔为8ms,电流密度为8mA/cm2时,得到的镀层光滑而均匀,颗粒大小接近0.3μm . 关键词:Zn；ZnCl2...电极上只有三元成核过程；得到的是锌和铝的合金.SUN等[6-8]将EMIC与ZnCl2 混合得到能够在空气中稳定存在的离子液体,并用于电沉积锌.循环伏安测试表明,当ZnCl2与EMIC的摩尔比为1?3时,体系呈Lewis碱性,电化学窗口大约为3.0V,与碱性的EMIC-A1C13相同；当ZnCl2与EMIC的摩尔比为0.5?1时,体系呈Lewis酸性,电化学窗口约为2V.在适当的温度和电压下,在酸......
%, the amount of Mg32(Al,Zn)49 phase in the as-cast microstructure of the experimental alloys increases and its distribution becomes more continuous. In addition, the Mg-10Zn-4A1 alloy containing 0.25%RE... in Table.1, which were prepared from commercially AM60 alloy, pure Mg, Al, and Zn. The rare earth additions were made of Y-rich misch metal, and TiC were added in the form of powder. The experimental......
metal alloy target placed in front of the aperture. In this work, the error ranges of P-XRF for determining Fe and Zn were (0.0076-0.0405) wt.% and (0.0705-0.0735) wt.%, respectively. 2.4 EPMA EPMA... 100083； 3. 西藏华泰龙矿业开发有限公司,拉萨 850200 摘 要:采用化学滴定和光谱技术(便携式X射线荧光光谱(P-XRF),电子探针能量色散光谱(EPMA-EDS),电子探针波长色散光谱(EPMA-WDS)和飞行时间二次离子质谱(ToF-SIMS))测定天然闪锌矿样品中Fe和Zn的含量. 此外,利用EPMA-WDS成像和ToF-SIMS成像分析闪锌矿样品中Fe和Zn的分布.结果表明......
严重,给社会造成巨大损失.热浸镀锌技术是目前世界上最基本,使用最广泛的钢材防腐蚀方法[1-2].Zn-Al合金是一种防腐蚀材料,主要用作钢铁制品表面的防腐蚀镀层,与纯锌和纯铝镀层相比较,Zn-Al合金镀层具有粘附性强,耐磨性和抗腐蚀性好,成本低等特点,是理想的热镀层保护材料,具有广泛的用途.在热浸镀Zn-Al合金中Al含量在0.005%~0.020%范围内时,能明显改善锌液的流动性,增加镀层表面的...不充分,为了开发外观漂亮,性能优异的Zn-Al基热浸镀合金镀层,深入研究合金成分和热浸镀工艺对镀层组织和性能的影响具有重要意义.本文作者拟采用溶剂烘干法制备不同Al含量的热浸镀Zn-(0.02~5)%Al合金镀层和Zn-5%Al-0.05%RE合金镀层,用光学显微镜,扫描电镜和能谱仪观察分析合金镀层的表面和截面组织及元素分布,用盐雾试验箱和全浸腐蚀实验方法研究Al含量和添加稀土对锌铝合金镀层形貌......
:TG146.2 文献标志码:A Effects of Mg, Ag and Zn multi-alloying on aging behavior of new Al-Cu-Li alloy LUO Xian... of Mg, Ag and Zn multi-alloying on tensile properties and microstructure of a new Al-Cu-Li alloy were investigated by means of tensile test, scanning electron microscopy (SEM) and transmission......
leading to the obvious improvement of the ambient and elevated temperature strength characteristics [8]. Mg-Zn-Al alloys can be considered to be one of the most promising heat treatable alloy types due... (a) and area scan maps of elements Mg (b), Al (c), Zn (d), Y (e) and Mn (f) of as-cast alloy The SEM image and XRD pattern of the as-cast alloy are shown in Fig. 2, where the discontinuous strip and granular......
galvanized Zn-Al-Mg alloy coating; microstructure; electrochemistry; cyclic corrosion test; cut-edge protection performance; corrosion resistance mechanism 随着锌资源的不断消耗和环境污染的日益严重,热镀锌镀层在耐蚀性能和力学性能等方面已不能满足要求...蚀行为.ISHIKAWA等[9]研究了热镀锌铝镁镀层的腐蚀产物,发现在水溶液中可以分离出ZnCl2,AlCl3以及MgCl2等化合物,并认为腐蚀产物是由Zn(Ⅱ),Al(Ⅲ)和Mg(Ⅱ)[Zn(Ⅱ)wAl(Ⅲ)xMg(Ⅱ)y](2w+3x+2y)(OH)(2w+3x+2y)-z-Clz·nH2O组成,它们凝聚在一起,形成致密的氧化膜,阻碍了镀层的进一步腐蚀.李锋等[10-11]研究热镀Zn-11......
-qing, HONG Bo, LI Yuan, LI Jie, LIU Ye-xiang (School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China) Abstract: Pb and its alloy film were prepared on the Al... of the film, and a compact and composition adjustable Pb alloy film can be obtained on Al substrate. Key words: molten salt; electroless plating; Al substrate; Pb film; combination strength; metal bath 金......
