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急急急！求助学位论文摘要翻译！
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请不要直接用“google”等翻译工具及弱智软件做无聊工作，否则一律视为无效！正文如下：摘 要 在当前湿法冶金工业领域中，铅及铅合金作为难溶性阳极材料仍被广泛的应用于电解Cu、Zn等的生产中，但由于铅电极在电解液中的少量溶解、阴极析出、易蠕变、电阻率大等缺点，消耗了阳极材料，影响了阳极使用寿命，而且溶解在溶液中的铅会在阴极上析出使金属中的铅杂质增高，降低了产品质量。因此，随着当前经济社会发展对生产生活中节能、降耗的要求，迫切要求制备出一种综合性能优异的新型电极材料，尤其是金属层状复合电极材料最为容易实现研究开发。 然而，现在国内外关于金属层状复合电极材料报道并不多。所以本课题“第三组元改善Al、Pb界面结合状况及其材料性能的研究”有待填补国内具有自主知识产权的层状复合电极材料研制技术空白，具有积极意义。研究工作及结果主要包括： (1) 基于键参数函数理论、电负性差理论、原子尺寸差，分析了制备Al-X-Pb层状复合材料的热力学可行性，并优化出一种第三组元过渡物质Sn； (2) 应用Al、Sn、Pb三元混合吉布斯自由能计算方法，通过建立MATLAB函数计算模型，找到了制备工艺温度范围内当Al、Sn、Pb组分点含量（at.%）为：0.42%，73.55%，26.03%，混合温度为753.15K时，Al、Sn、Pb三元混合吉布斯自由能最小,约为-5.33×104J/mol，并用MATLAB绘图工具surf()绘出其二元函数图像进行了验算,从理论的角度证实了层状复合模型的正确性； (3) 采用热物理温度场浸镀及热包覆铸造的方法制备出了Al-Sn-Pb层状复合材料，通过组织形貌分析、物相分析和力学试验，研究界面元素的扩散分布、扩散层厚度与调控方法。结果表明，引入第三组元金属后，极大地改善了Al、Pb的结合强度（拉伸剪切、三点弯曲强度），三组元之间的互扩散随着温度的升高而加剧，形成的界面层厚度也逐渐变厚，界面呈宽度较为均匀的波浪状分布； (4) 进一步测算出界面电阻率的数值，并分析出界面电阻随制备工艺温度的变化规律，为通过调整工艺参数改善材料导电性提供了途径。结果发现，其界面电阻率虽然较Pb略大，但由于界面层的厚度只有不到10μm厚，加之引入Al基材作为内芯，综合来看，使得界面的电阻得到了极大地改善。 文章对Al-x-Pb层状复合材料进一步的研发工作及应用前景进行了初步讨论与展望，为制备一种新型层状复合电极材料提供了一种科学方法。 |
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2楼2009-07-15 10:04:10
★ ★ ★ ★ ★ ★ ★ ★ ★ ★
zsgandy(金币+10,VIP+0): 7-15 11:01
zsgandy(金币+10,VIP+0): 7-15 11:01
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在当前湿法冶金工业领域中，铅及铅合金作为难溶性阳极材料仍被广泛的应用于电解Cu、Zn等的生产中，但由于铅电极在电解液中的少量溶解、阴极析出、易蠕变、电阻率大等缺点，消耗了阳极材料，影响了阳极使用寿命，而且溶解在溶液中的铅会在阴极上析出使金属中的铅杂质增高，降低了产品质量。因此，随着当前经济社会发展对生产生活中节能、降耗的要求，迫切要求制备出一种综合性能优异的新型电极材料，尤其是金属层状复合电极材料最为容易实现研究开发。 Currently, in hydrometallurgy industries field, lead and lead alloy as insoluble anode material are still widely applied in electrolysis of Cu, Zn. But lead electrode dissolves a small portion of itself in electrolyte, and other disadvantages such as precipitation from cathode, easily changed, large resistivity, so that it consumes anode, as well as impacts anode life. Worse, lead dissolved in solution will be precipitated on cathode so as to cause lead impurity increase and reduce product quality. Thus, under condition of saving energy and reducing consumption to cater for current economic and social development, a new type of integrated performance electrode material is necessary urgently. In particular, laminated metal electrode composite materials are easily to research and develop. 然而，现在国内外关于金属层状复合电极材料报道并不多。所以本课题“第三组元改善Al、Pb界面结合状况及其材料性能的研究”有待填补国内具有自主知识产权的层状复合电极材料研制技术空白，具有积极意义。研究工作及结果主要包括： However, reports about metal laminated composite electrode materials are rare at home and abroad. Therefore, this issue, "the third element to improve interface of Al, Pb and properties of material" can improve technologies of laminated composite electrode material in our country which possess independent intellectual property rights, and it shows positive significance. Researches and results as follows: |
3楼2009-07-15 10:08:58
4楼2009-07-15 10:12:04
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
zsgandy(金币+15,VIP+0): 7-15 11:02
zsgandy(金币+15,VIP+0): 7-15 11:02
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(1) 基于键参数函数理论、电负性差理论、原子尺寸差，分析了制备Al-X-Pb层状复合材料的热力学可行性，并优化出一种第三组元过渡物质Sn； (1)Based on key parameter function theory, electronegativity difference theory, atomic size difference, thermodynamic feasibility of Al-X-Pb laminated composite preparation was analyzed with optimization of a third transition element Sn; (2) 应用Al、Sn、Pb三元混合吉布斯自由能计算方法，通过建立MATLAB函数计算模型，找到了制备工艺温度范围内当Al、Sn、Pb组分点含量（at.%）为：0.42%，73.55%，26.03%，混合温度为753.15K时，Al、Sn、Pb三元混合吉布斯自由能最小,约为-5.33×104J/mol，并用MATLAB绘图工具surf()绘出其二元函数图像进行了验算,从理论的角度证实了层状复合模型的正确性； (2) Combined application of Gibbs free energy calculation method to Al, Sn, Pb mixture, and MATLAB function model, G of this mixture reach minimum within preparation process temperature when Al, Sn, Pb composition point content (at.%) was 0.42%, 73.55%, 26.03%, respectively, at temperature of 753.15K, which was about -5.33 × 104J/mol. And the MATLAB graphics tool in surf () was used to draw binary function in order to check. From a theoretical point of view, laminated composite model was confirmed. |
5楼2009-07-15 10:29:09
6楼2009-07-15 10:53:53
7楼2009-07-15 11:25:12
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
zsgandy(金币+15,VIP+0): 7-15 11:31
zsgandy(金币+15,VIP+0): 7-15 11:31
|
(3) 采用热物理温度场浸镀及热包覆铸造的方法制备出了Al-Sn-Pb层状复合材料，通过组织形貌分析、物相分析和力学试验，研究界面元素的扩散分布、扩散层厚度与调控方法。结果表明，引入第三组元金属后，极大地改善了Al、Pb的结合强度（拉伸剪切、三点弯曲强度），三组元之间的互扩散随着温度的升高而加剧，形成的界面层厚度也逐渐变厚，界面呈宽度较为均匀的波浪状分布； (3) Al-Sn-Pb layered composite material was prepared by temperature field of thermal physics and hot-dip coating casting method. Through structure morphology analysis, phase analysis and mechanical test, distribution of interface elements, diffusion layer thickness and control method were completed. The results showed that with introduction of the third element, it greatly improved combination strength of Al, Pb (tensile shear, three-point bending strength); while inter-diffusion in the three elements went up as temperature increased. Formed interface was gradually thicken. Interface width was uniform distribution just like wave. |
8楼2009-07-15 11:29:54
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
zsgandy(金币+10,VIP+0): 7-15 12:18
qingfeng877680(金币+10,VIP+0):代楼主追加奖励10金，欢迎常来！ 7-15 19:05
zsgandy(金币+10,VIP+0): 7-15 12:18
qingfeng877680(金币+10,VIP+0):代楼主追加奖励10金，欢迎常来！ 7-15 19:05
|
(4) 进一步测算出界面电阻率的数值，并分析出界面电阻随制备工艺温度的变化规律，为通过调整工艺参数改善材料导电性提供了途径。结果发现，其界面电阻率虽然较Pb略大，但由于界面层的厚度只有不到10μm厚，加之引入Al基材作为内芯，综合来看，使得界面的电阻得到了极大地改善。 文章对Al-x-Pb层状复合材料进一步的研发工作及应用前景进行了初步讨论与展望，为制备一种新型层状复合电极材料提供了一种科学方法。 (4) Further, interface resistivity was measured, as well as changes regulation of interface resistance with preparation temperature, so that it provide a way to improve material conductivity by adjusting process parameters. The results showed that although interface resistivity was slightly larger than Pb, in sum, it had been improved greatly because of the thickness of interfacial layer less than 10μm, besides introduction of Al matrix as a core. In this paper, concerning Al-x-Pb layered composite material, further research and application prospects were analyzed. A scientific method was provided to produce a new type of laminated composite electrode material. |
9楼2009-07-15 11:37:55
10楼2009-07-15 12:23:44