在铁基底上以Au/Cu为过渡层沉积金刚石膜

采用热丝法化学气相沉积以碳纳米管为形核剂在Ａｕ／Ｃｕ 镀膜为过渡层的铁基底上沉积金刚石膜,研究了以Ａｕ／Ｃｕ 作为过渡层的铁基底上沉积金刚石膜质量的影响因素。试验结果表明, Ａｕ／Ｃｕ 过渡层可以在铁基底上沉积出质量很好的金刚石膜,涂料、基底预处理以及沉积工艺对金刚石膜质量的改善具有明显的作用。     

Fe—Ni／Cu磁性多层膜中层间耦合和磁性的研究

利用振动样品磁强计和电子顺磁共振谱仪研究了Ｆｅ－Ｎｉ／Ｃｕ多层膜中的层间耦合和二维效应，以及它们对磁性的影响，对于Ｆｅ－Ｎｉ（３．０ｎｍ）／Ｃｕ多层膜，面内饱和场Ｈｓ，矫顽力Ｈｃ，剩磁比均随Ｃｕ层厚度作同步振荡变化，对于Ｆｅ－Ｎｉ（２．０ｎｍ）／Ｃｕ和Ｆｅ－Ｎｉ（３．０ｎｍ）／Ｃｕ多层膜，有效饱和磁化强度与共振线宽ΔＨ，随Ｃｕ层厚度作同步振荡变化。在它们的铁磁共振谱中，除了一致进动共振模外，还存在     

NiFe/Cu多层膜巨磁电阻与界面结构的研究

采用磁控测射方法制备的ＮｉＦｅ／Ｃｕ多层膜，在室温下测量到巨磁电阻随Ｃｕ层厚度振荡的第三峰，讨论了ＮｉＦｅ／Ｃｕ多层膜界面结构对巨磁电阻的影响     

交流阻抗法对几种铜缓蚀剂比较研究

采用交流阻抗法研究了在ＮａＣｌ溶液中缓蚀剂ＢＴＡ、ＴＴＡ、５ＭＢＴＡ ＣＢＴＭＥ对铜电极的缓蚀行为并进行了比较。４种缓蚀剂的缓蚀性均随浓度的增加而增加，当浓度达到７０ｍｇ／Ｌ时缓蚀性最佳。缓蚀剂浓度低于２０ｍｇ／Ｌ时ＢＴＡ、ＴＴＡ、５ＭＢＴＡ有效好的缓蚀性，超过４０ｍｇ／Ｌ时ＣＢＴＭＥ的缓蚀性明显优于其他３种。复合配方试验结果表明，当缓蚀剂总浓度为４０ｍｇ／Ｌ，ＢＴＡ与５ＭＢＴＡ复配的最佳比例为２     

FeSi／Cu多层膜的磁性和磁光效应

用射频交流溅射法制备了具有不同层厚的ＦｅＳｉ／Ｃｕ多层膜系列样品。通过铁磁共振谱测量发现：当Ｃｕ层厚度（ｄＣｕ）小于１５Ａ时，ＦｅＳｉ层间发生交换耦合。室温饱和磁化强度测量发现：ｄＣｕ＜１５Ａ，磁化强度随ｄＣｕ减小而明显下降。磁光克尔谱测量则表明：ｄＣｕ＜１５Ａ时，谱线出现异常。将上述三个结果进行综合分析提出如下模型：ｄＣｕ＜１５Ａ，Ｃｕ层中传导电子被反向极化，并通过ＲＫＫＹ相互作用使ＦｅＳｉ层间     

Co—Al／Cu多层膜中层间耦合的振荡对光学性质和磁光效应的作用

用四探针法,纵向表面磁光效应,极克尔磁光谱仪和椭圆偏胱谱仪研究了离子束溅射法制备的「Ｃｏ９０Ａｌ１０（１．６ｎｍ）／Ｃｕ」３０多层膜中的层间耦合,磁光效应及光学性质。结果发现对于Ｃｏ－Ａｌ／Ｃｕ多层膜,其面内饱和场ＨＳ,矫顽力ＨＣ,磁电阻ΔＲ／Ｒ,特别是等效介电函数δ,磁光极克尔角θＫ分别随Ｃｕ层厚度的变化同步作周期性的振荡,其 ０．９ｍｍ。     

黄铜渗铝的研究

采用粉末渗镀法，研究了黄铜渗铝工艺。获得有效渗铝的工艺条件是：渗镀温度６００℃，渗镀时间３ｈ，渗剂组成是Ａｌ粉４０％、ＮＨ４Ｃｌ２％和Ａｌ２Ｏ３粉５８％。渗铝后的黄铜耐蚀性提高１．８倍，硬度增加２５．６％，渗层厚度为５０μｍ。通过Ｘ射线衍射分析等得出，黄铜渗铝层的结构由表面至基体是Ｃｕ０．６１０８Ａｌ→γ２－Ｃｕ９Ａｌ４→α－ＣｕＺｎ（含Ａｌ）→α－ＣｕＺｎ。     

动电位法研究酸性溶液中CTAB对Cu的缓蚀作用

该文选用典型的阳离子型表面活性剂十六烷基三甲基溴化铵（ＣＴＡＢ）作为Ｃｕ的缓蚀剂。采用动电位扫描法研究了酸性介质中ＣＴＡＢ对金属铜的缓蚀作用。探讨了酸度、表面活性剂浓度及温度等因素对缓蚀效率的影响。     

Cu层厚度对NiFe／Cu／Co的巨磁电阻效应影响

用磁控射频溅射法制备了ＮｉＦｅ／Ｃｕ／Ｃｏ２多层膜;研究了薄膜的磁特性和磁电阻特性与中间层Ｃｕ厚度的关系,在适当的Ｃｕ厚度下,制备出了具有很好自旋阀巨磁阻效应的多层膜。研究表明,在弱磁场下,薄膜的磁电阻回线的斜率与原来的磁化过程有关,因此该薄膜材料可以用于巨磁电阻存储器中。     

黄铜渗铝的研究

采用粉末渗镀法，研究了黄铜渗铝工艺。获得有效渗铝的工艺条件是：渗镀温度６００℃，渗镀时间３ｈ，渗剂组成是Ａｌ粉４０％、ＮＨ４Ｃｌ２％和Ａｌ２Ｏ３粉５８％。渗铝后的黄铜耐蚀性提高１．８倍，硬度增加２５．６％，渗层厚度为５０μｍ。通过Ｘ射线衍射分析等得出，黄铜渗铝层的结构由表面至基体是Ｃｕ（０．６１０８）Ａｌ（０．３８９２）→γ２－Ｃｕ９Ａｌ４→α－ＣｕＺｎ（含Ａｌ）→α－ＣｕＺｎ。     

2－十一烷基－1－（双硫脲）乙基－咪唑啉在铜表面上的成膜作用

研究了２－十一－烷基－１－（双硫脲）乙基咪唑啉（简称ＳＭ－２）在盐酸介质中对７０－１铜的缓蚀作用及其在黄铜和紫铜管表面上的成膜性能。结果表明，它优于ＢＴＡ或ＭＢＴ。     

模拟海水中铜腐蚀及缓蚀的光电化学研究

用光电化学方法现场测量铜电极的开路光电压,用开路光电压的变化来反映铜的腐蚀行为及缓蚀剂ＢＴＡ的缓蚀行为。实验发现开路光电压由正变负即光响应由Ｐ型光响应转变为Ｎ型光响应表明铜电极受到Ｃｌ－的侵蚀,在铜板电极表面形成了含有ＣｕＣｌ在内的复杂相。在本文条件下从ｗ（缓蚀剂ＢＴＡ）为５×１０－６％时开始产生缓蚀作用,随着ｗ（缓蚀剂）的增加,ＣｕＢＴＡ膜变得越致密越厚,缓蚀作用越好,表现为开路光电压越来越小。并用表面电子能谱技术测试结果佐证     

苯并三氮唑与5-羧基苯并三氮唑在NaCl溶液中对铜缓蚀作用的SERS研究

采用表面增强拉曼光谱技术（SERS）研究了w＝0．03NaCl溶液中BTA（苯并三氨唑）及其衍生物5CBTA（5－羟基苯并三氮唑）对铜的缓蚀作用机理,发现5CBTA对铜的作用与BTA的作用机理相似,在较大正电位下两者都是通过三氮唑环与铜形成配合物覆盖在铜表面,随着电位负移在铜电极表面吸附的聚合物膜逐渐转化分为分子形式吸附,5CBTA中的－COOH基团只是起到空间位阻的作用,没有参与电极表面的吸附。两者配使用以BTA吸附为主,其缓蚀机理没有发生改变,也没有产生协同效应。     

铜阳极膜导电性转型起因探讨

对在不同酸碱度和添加剂的电解液中,铜电极氧化膜呈现与块体铜氧化物不同的ｎ型半导体性质的实验结果进行了综合分析,指出铜阳极膜导电性转型应归因于隙间铜离子在膜中向溶液方向的迁移并形成浓度梯度,使邻近基底的氧化物层转呈ｎ型导电,并在可吸收到足够强度和能量的照射光时呈现阳极光电流响应。     

Cu2+配位桥联作用组建荧光性多层膜

借助Au—S化学键的作用,在金基底上组装DL-半胱氨酸(Cys),形成单层自组装膜Cys／Au．然后,利用Cu^2 的配位桥联作用,将卜萘胺乙酸(NAA)组装于Cys／Au上,构建一种新型的自组装多层膜NAA／Cu／Cys／Au．文中采用电化学、荧光光谱、电子能谱等方法表征自组装膜的结构,采用电化学阻抗谱技术和循环伏安法研究该荧光性自组装膜的性能．结果表明,基于铜离子配位作用的NAA／Cu／Cys／Au膜与基于静电作用制得的双层膜NAA／Cys／Au相比,具有更好的导电性。     

卤素离子与苯骈三氮唑协同成膜动力学的体声波传感技术研究

采用体声波传感技术就卤素离子与铜缓蚀剂——苯骈三氮唑( BTA)协同成膜的动力学及相应复合膜的稳定性进行了研究 .结果表明 ,卤素离子 ( F- ,Cl- ,Br- ,I- )中仅 I- 与 BTA具有协同效应 ,能有效地提高BTA的缓蚀效果和膜层稳定性 ,同时 ,对 BTA的成膜动力学有明显影响     

Corrosion properties of bio-oil and its emulsions with diesel

Bio-oil is a new liquid fuel but very acidic. In this study, bio-oil pyrolyzed from rice husk and two bio-oil/diesel emulsions with bio-oil concentrations of 10 wt% and 30 wt% were prepared. Tests were carried out to determine their corrosion properties to four metals of aluminum, brass, mild steel and stainless steel at different temperatures. Weight loss of the metals immersed in the oil samples was recorded. The chemical states of the elements on metal surface were analyzed by X-ray photoelectron spectroscopy （XPS）. The results indicated that mild steel was the least resistant to corrosion, followed by aluminum, while brass exhibited slight weight loss. The weight loss rates would be greatly enhanced at elevated temperatures. Stainless steel was not affected under any conditions. After corrosion, in- creased organic deposits were formed on aluminum and brass, but not on stainless steel. Mild steel was covered with many loosely attached corrosion materials which were easy to be removed by washing and wiping. Significant metal loss was detected on surface of aluminum and mild steel. Zinc was etched away from brass surface, while metallic copper was oxidized to Cu20. Increased Cr203 and NiO were presented on surface of stainless steel to form a compact passive protection film. The two emulsions were less corrosive than the bio-oU. This was due to the protection effect of diesel. Diesel was the continuous phase in the emulsions and thus could limit the contact area between bio-oil and metals.     

苯并三唑衍生物的缓蚀作用及PPP量子化学研究

通过挂片失重法和电化学极化曲线研究了苯并三唑,１－氯苯并三唑,５－硝基苯并三唑和５－氨基苯并三唑四种苯并三唑衍生物在ＮａＣｌ溶液中对铜的缓蚀作用。用ＰＰＰ－ＳＣＦ半经验量子化学方法对它们的结构参数进行计算,分析表明ＢＴＡ优良的缓蚀作用主要来自它对一价了了的促钝化作用,苯并三唑衍生物在铜表面的吸附是通过整个环上的π电子与铜相互作用实现的,π电子的化学吸附作用对其缓蚀性能有一定的影响。     

Synthesis and structure of Cu5(BTA)6(TTA)4·5DMF, copper-nitrogen cluster containing η3-benzotriazolate

The title cluster compound-Cu5(BTA)6(TT- A)4@5DMF was prepared using thenyltrifluoroacetone and benzotriazolate ligands. The crystal structure indicates that a tetrahedral array of Cu(1), Cu(2), Cu(3) and Cu(4) ions surrounding a central Cu(5) ion are held together by bridging tridentate BTA- and terminated by TTA- bond cap. The three nitrogen atoms of a BTA- bond three different copper ions to form a η3-benzotriazolate. The central Cu ion has a distorted octahedral structure and the surrounding Cu ions are 5 coordinated forming distorted tetragonal structures. The distances between the surrounding Cu(Ⅱ) ions and the central Cu(Ⅱ) ion are in the range of 0.3561-0.3755 nm and those between the surrounding Cu(Ⅱ) ions are in the range of 0.5785-0.6301 nm.     

Synergistic Effect of Tungstate and Benzotriazole on Corrosion Inhibition of Carbon Steel in Solutions Containing Cl^-

The corrosion inhibition of tungstate, benzotriazole (BTA) and their combination in solutions containing Cl^- was studied by electrochemical techniques. The results indicated that the inhibition efficiency of tungstate was higher than that of BTA. The efficiency increased with increasing concentration of tungstate or BTA. In the studies of synergistic effect of tungstate and BTA, it had been found that in pH 9.0 solution, the largest Rt could be obtained with the concentration ratio of tungstate / BTA being 1 : 1. Lowering the pH value of solution would reduce the efficiency of inhibitors, especially in binary inhibitors. Increasing the concentration of Cl^- accelerated the corrosion of carbon steel in the solutions with various inhibitors, but the influence of Cl^- on corroding rate in binary inhibitors was not so strong as in single component. The results ofsurface analysis showed that W, C, N, O and Fe elements existed in the protecting film formed with binary inhibitors. The thickness of the film was about 12-15 nm.