汽车发电系统的发展与设计思路的演变

汇总近年来汽车发电系统的交流发电机定子技术的进步,介绍新型传动皮带与皮带轮的结构;从发电机与蓄电池的相关关系介绍发电系统设计思路的演变。     

热带海洋大气环境中3004系列铝和铜电化腐蚀行为研究(英文)

The galvanic corrosion behaviour of aluminium 3004 and copper with different area ratios were studied in the tropical marine atmosphere at Tuticorin harbour over a period of 426 days. The area ratios of AAl : ACu, studied were 1:1, 1:2, 1:4, 1:8, 2:1, 4:1 8:1. The galvanic corrosion behaviour of metals was studied in terms of relative increase in the corrosion rate of aluminium due to galvanic coupling with copper, relative decrease in the corrosion rate of copper due to galvanic coupling with aluminium, and the susceptibility of aluminium to pitting owing to galvanic coupling with copper. The galvanic potential and galvanic current of the system were monitored. Pits of different dimensions ranging from mild etchings to perforations were experienced on the borders and the surfaces of the interface of aluminium in contact with copper. The weathering parameters and the environmental pollutants which have a major role in influencing the galvanic corrosion of metals were also monitored. The corrosion products resulting from galvanic corrosion were analysed using XRD and the pitting on aluminium resulting from galvanic corrosion has been highlighted in terms of pit depth, size and density of pit, using a high resolution microscope.     

阴阳离子穿插的配位聚合物：｛［MoS4Cu4（4，4′-bpy）4］［MoS4Cu4（4，4′-bpy）2I4＆#183;4H2O］｝n的合成和晶体结构

通过一种有效的构建三维M/S/Cu配位聚合物的方法,成功合成了一个新的基于鞍状单体[ MoS4 Cu4]的阴阳离子穿插的三维配位聚合物｛[MoS4Cu4（4,4′-bpy）4][MoS4Cu4（4,4′-bpy）2I4＆#183;4H2O]｝n．X射线单晶衍射表明,该晶体属于四方晶系,空间群为I41/acd,a＝24.830（3）？,b＝24.830（3）？,c＝28.208（6）？,α＝β＝γ＝90＆#176;．晶体结构分析显示,配位聚合物1由穿插的阳离子[MoS4Cu4（4,4′-bpy）4]2＋和阴离子[MoS4Cu4（4,4′-bpy）2I4＆#183;4H2O]2-组成的三维钻石状配位聚合物．     

含铜、锌冷晶体停搏液对心肌保护的实验研究

以离体灌注鼠心为模型，观察了铜、锌加入ＳＴ·Ｔｈｏｍａｓ心脏停搏液对缺血再灌注心肌的保护作用。通过观察乳酸脱氢酶（ＬＤＨ）、磷酸肌酸酶（ＣＫ）、超氧化物歧化酶（ＳＯＤ）、黄嘌呤氧化酶（ＸＯ）、丙二醛（ＭＤＡ）的含量及心肌超微结构改变，发现应用含铜、锌冷晶体停搏液能明显减轻心肌再灌注损伤，有利于术后心功能恢复。     

铜合金表面钴镍基纳米涂层的水热法合成

利用水热法及后续热处理过程在铜合金表面合成纤维状产物原位增强的钴镍基涂层,并研究了纤维状产物的原位生成机制.结果表明,在涂层中钴、镍基纳米颗粒被纤维状产物桥联.在线型分子结构柠檬酸钴和柠檬酸镍络合物“分子模板”的诱导下,钴、镍原子沿线型方向形核、长大,实现了纤维状产物在钴、镍基纳米颗粒之间的原位生长.     

铜管在船舶海水管系中的腐蚀

结合系列船舶设计、建造及维修实例,对铜管在船舶海水管系中出现腐蚀的现象进行了同型船对比调查,对铜管腐蚀机理进行了分析,结合分析结果对出现铜管腐蚀的船舶进行了针对性的考察找到原因,提出了相应解决方案,并对后续船舶海水管系设计提出了建议。     

薄膜铝栅极有机半导体静电感应三极管的试制及动作特性

试制的有机静电感应三极管采用真空蒸镀法和有机色素酞菁铜(CuPc),制成Au/CuPc/Al/CuPc/Au五层结构,制作的薄膜铝栅极有机静电感应三极管,在偏置电压为V_(DS)=3V,V_(GS)=0V时,静态动作电流I_(DS)=1.2×10~(-6)A/mm~2,动态小信号响应频率可达到1000Hz。实验结果表明,与采用MOS结构的CuPc有机薄膜三极管相比,该三极管驱动电压低,呈典型的静电感应三极管不饱和电流-电压特性。     

A study on synthesis and oxidation mechanism of mono-alkyl phosphate

Oxidation of white phosphor, us by peroxides to produce mono-alkyl phosphate in the alcoholic solution has been studied under non-and catalytic conditions. In this paper, the mechanism of the oxidation process was analyzed. The content of mono-alkyl phosphalte in the product is affected by different types of alcoholic solution and peroxide solvent. The result shows the availabulity of the following order for the activity of the peroxide solvent and alcoholic solutions-tert-butyl hydroperoxide>(di) benzoyl peroxide>hydroperoxide; methanol> n-butyl alcohol> phenol. Under optimized reaction conditions: n (a white phosphorus) : n( tert-butyl hydroperoxide) : n (methanol)= 1:10:12, reaction temperature 80 ℃, reaction time 2.5 h, products of 80.0% mono-alkyl phosphonates can be provided when white phosphorus undergoes oxidation by tert-butyl hydroperoxide in the methanol solutions. When Cu (I), and Cn(Ⅱ) complexes are used as catalysts, it is possible to significantly enhance the oxidation of white phosphorus with the increase in the reaction rate. Th'e order for activity of catalysts is Cu(acac)2>Cu (CH3COO)2>Cu (C3 H7COO)2:>CuI>CuCI2. Noticeably, with Cu(acac)2 as catalyst, the selectivity for mono-alkyl phusphonates can reach 95% under adequate reaction conditions.     

伏安法测定PM2.5中的硝酸根离子

利用多孔铜修饰电极检测PM 2.5中硝酸根离子的含量.探讨了硝酸根离子在多孔铜修饰电极上的电化学性质.研究了硝酸根离子的响应电流与浓度的关系.结果表明:硝酸根离子还原峰电流与其浓度在6.67×10-6 ～2.00×10-4 mol/L范围内呈良好的线性关系,相关系数r=0.998,方法检出限为2.00×10-6 mol/L.将该方法用于PM2.5中硝酸根离子含量的检测,测定结果与用分光光度法测定相近,说明该电化学测定方法可以用于PM2.5中硝酸根离子含量的检测结果是可靠的,具有一定的实用价值.     

库车县铜厂水库对库俄铁路隧道的影响评价

在对库车县铜厂水库和库俄隧道所处场地的地层特征、地质构造及库水渗透速度等进行分析的基础上,评价水库蓄水后对隧道工程的影响,并为其隧道洞身的防护措施提出了建议。