Ni—V中间合金制造工艺研究

利用工业V     

A simple method for the production of highly ordered porous carbon materials with increased hydrogen uptake capacities

The synthesis, characterization and hydrogen uptake of porous carbons generated by heat treatment was investigated using various zeolites and mesoporous silicas as hard templates. The effect of heat treatment on the structural order, textural properties and hydrogen uptake capacities of porous carbons templated from the model zeolite EMC-2 in a temperature range of 600–800 °C during chemical vapour deposition were studied in details. The heat treatment improved the structural order of replicated microporous carbons, significantly increased both total and microporous surface area and pore volume, and remarkably increased the hydrogen uptake capacity. The optimized heat treatment conditions were at 900 °C for 3 h. The heat treatment at high temperatures was found to be a simple and general approach to synthesize well-ordered microporous carbons from different zeolite templates, using various carbon precursors and through different synthesis methods. The microporous carbons possessed a high surface area and pore volume with increased microporosity and therefore exhibited improved hydrogen storage capacities up to 5.85 wt% at 20 bar and −196 °C. The heat treatment, however, has no obvious effect on the textural properties and hydrogen uptake capacities for mesoporous carbons templated from mesoporous silicas.     

基于IDA的阀厅结构地震易损性分析

尽管近年来大型换流站阀厅结构越建越多,但是对阀厅结构的易损性研究仍十分缺乏。考虑到大型换流站阀厅结构在电力系统中的重要性,对这类结构易损性开展深入地研究是十分必要的。在数值模型正确性得到验证基础上,对阀厅结构开展在不同类型地震动作用下的增量动力分析(IDA),基于增量动力分析结果建立阀厅结构处于不同破坏状态的地震易损性曲线。研究结果表明当地震动峰值加速度小于0.5g时,阀厅结构刚度降幅比较缓慢,而随着峰值加速度增大,其刚度降幅逐渐增快。由地震易损性曲线可知,在罕遇地震作用下阀厅结构处于不同破坏状态的超越概率均小于5%,该阀厅结构抗震设计满足要求并具有较大安全储备。     

泡沫铝技术的国内外进展

详细介绍了国内外泡沫铝技术的现状和发展趋势以及泡沫铝制品的性能 ,并对泡沫铝产业的现状及发展作了分析和展望     

TiB2制取的热力学计算

通过热力学计算，发现在碳热还原氧化钛和氧化硼的过程中，氧化钛的还原过程是分步进行的，但不会生成金属钛。氧化硼的还原是一步生成单质硼，且是整个过程的控制步骤。在单质硼的参与下，低价氧化钛被碳还原，直接生成二硼化钛。     

低分子比铝电解质的槽电阻—Al2O3浓度曲线

低分子比铝电解质的槽电阻－Ａｌ２Ｏ３浓度曲线是实现低分子比铝电解而进行Ａｌ２Ｏ３下料自动控制的基础。本文在实验室铝电解槽上使用低分子比电解质，应用Ｌｅ－ＢｌａｎｃｅＩ－Ｕ曲线法测定了槽电阻计算式Ｒ＝（Ｕ－Ｖｅｘｔ）／Ｉ中的常数值Ｖｅｘｔ，并通过槽电压Ｕ，槽电流Ｉ和Ａｌ２Ｏ３浓度，研制了槽电阻－Ａｌ２Ｏ３浓度曲线。     

因特网上交互式铝电解体系物理化学性质查询系统的设计与建设

本工作的目的是建立一个以因特网为介质的铝电解质物理化学性质的计算与查询系统.系统的查询和运算是首先通过表单接收数据,然后调用JavaScript函数传递数据,在Javaapplet小程序中处理这些数据,再利用Graphics类中的方法绘制相应的性能曲线.系统目前收录的铝电解质物理化学性质包括:液相线温度、三氧化二铝溶解度、电导率、蒸气压、密度、表面张力、粘度、金属溶解性等.     

Synthesis and properties of polymeric complexes containing bithiazole rings and carbazole units

A novel polymer (poly[2,2'‐(4,4'‐bithiazolylene)][N‐(2‐ethylhexyl)‐3,6‐carbazylene] (PBTCA) was first synthesized from 2,2′‐diamino‐4,4′‐bithiazole and N‐(2‐ethylhexyl)‐3,6‐diformylcarbazole. The structure of the polymer was determined with IR and ¹H‐NMR spectroscopy. The PBTCA–Nd³⁺ complex was prepared via the mixing of neodymium trichloride hexahydrate and PBTCA in dimethyl sulfoxide under a nitrogen atmosphere. The magnetic behaviors of the Nd³⁺ complex of a poly(Schiff base) were measured as a function of the magnetic field strength (0–50 kOe) at 4 K and as a function of the temperature (4–300 K). The results show that PBTCA–Nd³⁺ is a ferromagnet when the temperature is below 15 K, and above that, it is a diamagnet. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 443–446, 2006     

铝电解质初晶点数据与低温电解

工业铝电解采取适宜的电解温度，它通常高出电解质的初晶点（即熔点）－5－10℃，本文汇集了新近的初晶点数据并讨论实现低温电解的可行性。     

碳化硅耐火材料在铝电解槽中应用的可行性

为评价某厂生产的碳化硅性能，测试了其化学成分，物相组成，电阻率，在高温下耐电解质、铝液的腐蚀性以及空气氧化性，同时借助电子扫描分析对腐蚀机理进行探讨，最后得出这种材料适合作铝电解槽侧壁材料，它在电解槽上的应用有利于延长槽寿命，增加产能。