Raman Spectroscopic Study on Mechanism of Aluminum Triphosphate Pigment

应用拉曼光谱研究了含有防锈颜料涂装特性的钢样 ,在此基础上探讨了三聚磷酸铝防锈颜料对A3钢的保护机理 .三聚磷酸铝溶解后能到达钢样表面 ,其离子可与铁离子化合形成三聚磷酸铁 .三聚磷铁能缓慢地通过化学键牢固地附着在钢样表面 ,最终在钢表面形成一层隔绝腐蚀介质和钢样的紧蜜保护膜阻止了腐蚀的继续发生从而达到保护的目的The painted steel sample whose coating contained anticorrosive pigment has been investigated by Raman spectroscopy.The protective mechanism of aluminum triphosphate pigment for A3 steel is proposed as follows: Aluminum triphosphate can be dissolved and arrive at the surface of the steel.The dissolved triphosphate ions can complex with ferric ions.And the new products,namely ferric triphosphate,can strongly adhere at the surface of the steel by chemical bonds slowly.At last,a compact protective film,which effectively separates the steel substrate from the aggressive media,is formed at the steel surface.作者联系地址：中国科学院福建物质结构研究所,中国科学院福建物质结构研究所,中国科学院福建物质结构研究所,中国科学院福建物质结构研究所,中国科学院福建物质结构研究所 福建厦门361012 ,福建厦门361012 ,福建厦门361012 ,福建厦门361012 ,福建厦门361012Author's Address: Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences,Xiamen 361012,Chin

Electrochemical Impedance Spectroscopy Studies on Inhibitive Performance of Aluminum Triphosphate Pigment

利用电化学阻抗谱研究了方解石及三聚磷酸铝环氧涂层的耐蚀性能 ,并提出了它们的作用机理 .结果表明 ,方解石只起体质颜料作用 ,不具备缓蚀性能 ;而三聚磷酸铝因在钢基表面作用形成致密的保护膜则表现出优良的缓蚀性能 .The epoxy coatings on A3 steel sheets containing calcite or aluminum triphosphate (AlTP), were investigated by Electrochemical Impedance Spectroscopy (EIS). The results showed that calcite pigment is not an inhibitor, but an extender pigment, and that AlTP pigment can considerably enhance the protective performance of epoxy coating. The triphosphate ion at the interface between the steel substrate and the coating can complex with the corrosion product, such as ferric and ferrous ions, and form a compact protective film which effectively separates the steel substrate from the aggressive media.作者联系地址：中国科学院福建物质结构研究所!福建厦门361012,中国科学院福建物质结构研究所!福建厦门361012,中国科学院福建物质结构研究所!福建厦门361012,中国科学院福建物质结构研究所!福建厦门361012,中国科学院福建物质结构研究所!福建厦门361012Author's Address: Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Xiamen, 361012,Chin

苯胺的光电、催化聚合及聚苯胺膜的光电、催化性能和离子交换的研究

学位：理学硕士院系专业：化学化工学院化学系_物理化学(含化学物理)学号：xy00017

Study of CoS_2 as a novel negative electrode material for lithium ion battery

报道了一种新型锂离子蓄电池阳极材料CoS2,利用X射线衍射(XRD)、电子扫描电镜(SEM)和BET等技术研究了其结构和形貌。XRD显示CoS2为立方结构,晶胞参数a=0.5531nm,SEM观察其颗粒大约在30mm,表面有丰富的微结构。对不同乙炔黑含量的材料进行研究发现,乙炔黑含量为30%的样品具有较好的电化学性能,首次最大嵌锂容量高达1280mAh·g-1。非原位XRD研究了材料在充放电过程中结构的变化,同时研究了其反应机理。Cobalt disulfide was investigated as a promising anode material for lithium ion batteries. The crystal structure and surface morphology have been characterized by using XRD、SEM and BET techniques. The results of XRD show that the sample is a cubic phase. The grain size of sample is 30 mm with a special nanostructure characteristic as observed by means of SEM, Charge-discharge experiments show that the sample with 30% different acetylene black has the best performance that the first lithium insertion capacity is about 1 280 mAh·g-1. Ex-situ XRD experiments were also carried out to determine the structural changes of delithiated / lithiated anode materials and used to analyze the reaction mechanism.国家自然科学基金资助项目(20473068,29925310

Electrochemical and Corrosion Behaviour of A3 Steel Covered With Ion selective Organic Coating

采用动电位扫描极化曲线和电化学交流阻抗技术，研究了A3钢表面涂装阴离子选择性、阳离子选择性和双极性有机涂层在3%nACl溶液中的腐蚀和电化学行为，分析了不同离子选择性涂层对A3钢防蚀性能的差别，并探讨了其耐蚀机理Potentiodynamic method and electrochemical impedance spectroscopy technique were empoloyed to study the corrosion electrochemical behaviour of A3 steel covered with anion selective、 cation selective and bipolar organic coating ,and phenolic varnish (nonionic selective organic coating) as contrast, in 3% NaCl solution.The results indicate that,compared with phenolic varnish,anion selective organic coating accelerates the propagation of metal corrosion,whereas cation selective organic coating decelerates corrosion propagation, and bipolar organic coating is of the most corrosion resistance among the Four type organic coatings.国家自然科学基金;中国科学院腐蚀与防护国家重点实验室课

EFFECT of ION-SELECTIVE PHENOLIC COATINGS ON ELECTRO-CHEMICAL BEHAVIOUR of COPPER IN 3% NaClSOLUTION

利用掺杂离子交换体制备了含不同交换离子品种的阴离子选择性、阳离子选择性和双极性酚醛涂层,研究了涂装不同离子选择性酚醛涂层的铜电极在3%nACl溶液中的腐蚀电化学行为,讨论了各种离子选择性涂层对铜防护性能的差别,并与没有离子选择性的涂层作了比较。Anion-selective, cation-selective and bipolar phenolic coatings were prepared by mixing phenolic varnish with ion exchangers.MoO42- anion exchanger resin and ammonium molybdophosphate were utilized as anion and cation exchangers respectively.The bipolar coating consisted of an anion-selective inner layer on the metal side and a cation-selective outer layer on the solution side.The polarization curves and Nyquist plots of copper electrodes covered with various ion-selective phenolic coatings and nonionic-selective phenolic coating as contrast in 3% NaCl solution were measured by poltentio-dynamic method and EIS technique.The results indicated that, compared with the nonionic- selective coating, the anion-selective coating accelerated the propagation of metal corrosion, cation-selective coating decelerated corrosion propagation, and bipolar coating was the most corrosion-resistant among the Four types of phenolic coatings.With the bipolar coating, the anodic current was greatly suppressed, while no current blockage occurred in the cathodic direction.Thus there arose rectiFication of ion movement retarding the ionic current in the anodic direction.The rectiFication phenomenon blocked the Flow of anodic ion transport and led to metal passivation.This showed that the bipolar coating possessed some Function of passivation membrane and had important eFFect on the process of anodic dissolution.国家自然科学基金资助项目;金属腐蚀与防护国家重点实验室课

A Study on AntiCorrosion Performance of IonSelective Phenolic Coatings for Carbon Steel by EIS

研究了涂有不同离子选择性酚醛层的碳钢试样在3%nACl溶液中的电化学交流阻抗谱，用不同的等效电路解析了不同涂层体系的频谱行为，讨论了不同离子选择性涂层对碳钢的防腐蚀性能，分析了各自的耐蚀机理。结果表明，双极性和阳离子选择性酚醛涂层对碳钢的防腐蚀性能比酚醛清漆好，而阴离子选择性酚醛涂层比酚醛清漆差。Abstract The anticorrosion performance of carbon steel painted with anionselective,cationselective and bipolar phenolic coatings,and phenrolic varnish (nonionicselective phenolic coating) as contrast in 3% NaCl solution,was investigated by electrochemical impedance spectroscopy (EIS) technique.The results showed that compared with nonionicselective phenolic coating, the anionselective phenolic coating accelerates the propagation of metal corrosion, whereas cationselective phenolic coating decelerates corrosion propagation, and bipolar phenolic coating is the most corrosionresistance among the fur types of phenolic coatings.国家自然科学基金;中国科学院腐蚀与防护国家重点实验室课

Study on the New Technique of Cu Micro-plating Based on Ceramics

建立微机处理体系(包括线路、图形设计,光照点选择及活化处理等)与化学镀铜相结合的微细镀覆新技术.该技术可在Al2O3基底上获得性能良好的Cu镀层,其布线速率达 50mm/s,线分辨率 35μm,工艺简便,条件温和,为陶瓷微细镀覆开辟了新途径.By combing the computer processing system (including the design of the line and the pattern, the choice of the scanning area and the treatment of the activation) with the electroless-plating technology, this article provides a new approach for the micro-plating based on the ceramics. The copper film based on ceramics with good properties can be obtained under the mild operating conditions. The line resolution is 35 μm and the wiring speed is 50 mm/s. The results had also showed that the quality of the copper plating is closely related to the roughness of the ceramic substrates.作者联系地址：中科院福建物质结构研究所二部,中科院福建物质结构研究所二部,中科院福建物质结构研究所二部,中科院福建物质结构研究所二部,中科院福建物质结构研究所二部,中科院福建物质结构研究所二部 福建厦门361012 ,福建厦门361012中科院研究生院,北京100039 ,福建厦门361012 ,福建厦门361012 ,福建厦门361012中科院研究生院,北京100039 ,福建厦门361012Author's Address: *1,ZHAO Xiong-chao~1,2,GUO Qi-long~1,HONG Yan-ping~1,DENG Qun-shan~1,2,CHEN Ren-huan~11. Institute of Matter Structure Chinese Acadermy of Sciences,Corrosion Division,Xiamen361012,China,2.Graduate School of the Chinese Acadermy of Sciences,Beijing 100039, Chin

Corrosion Behaviour of Copper Covered With Ion selective Phenolic Coatings by EIS

用电化学交流阻抗技术研究了涂装不同离子选择性涂层的铜电极在３％ＮａＣｌ溶液中的腐蚀行为，根据不同涂装体系的阻抗谱特征，建立了相应的等效电路模型，由阻抗数据解析的结果，讨论了不同离子选择性涂层对铜的防蚀性能．结果表明，离子选择性涂层的组成和结构对铜的腐蚀行为影响很大，由阴离子选择性内层和阳离子选择性外层构成的双极性涂层具有优异的防蚀性能．Electrochemical impedance spectroscopy(EIS) technique was employed to study the corrosion behaviour of copper painted with the anion selective、 cation selective and bipolar phenolic coatings in 3% NaCl solution. From the impedance spectrum characteristics, the models of equivalent circuit for these different coating systems were established,and the methods for the analysis of experimental impedance diagrams in terms of coating and interface properties were discussed. The research results show that the composition and structure of ion selective coatings have significant influence on corrosion behaviour of copper. The bipolar coating consisting of an anion selective inner layer and a cation selective outer layer possesses excellent corrosion resistance.作者联系地址：固体表面物理化学国家重点实验室厦门大学化学系,中国科学院福建物质结构研究所二部Author's Address: State Key Lab. for Phys. Chem. of the Solid Sur., Dept. of Chemistry, Xiamen Univ., Xiamen 361005 Gu Zhijun Zhang Zhigang Su Fangten

Selective Electroless Copper Plating Micro-pattern on Ceramics Without Sensitisation and Activation

本文提出一种新的化学镀铜工艺,与激光微细刻蚀技术相结合可在Al2O3基底上实现无敏化活化化学镀铜,获得光亮致密、分辨率较高(40μm),导电性良好的化学镀层.The purpose of this article is to provide a new technology of electroless copper plating without palladium activation steps. By combining the technology of laser micro-etching with the new copper-plating bath, copper plating on ceramics was obtained. The experimental results showed that the solution used for copper electroless plating was stable and the copper coating obtained was bright,dense with good electrical conductivity.The line definition was about 40 μm. The electroless Cu films deposited from this system were gentle and required simple operating conditions.作者联系地址：中科院福建物质结构研究所二部,中科院福建物质结构研究所二部,中科院福建物质结构研究所二部,中科院福建物质结构研究所二部,中科院福建物质结构研究所二部,中科院福建物质结构研究所二部 福建厦门361012中国科学院研究生院,北京100039 ,福建厦门361012 ,福建厦门361012中国科学院研究生院,北京100039 ,福建厦门361012 ,福建厦门361012 ,福建厦门361012Author's Address: 1, 2, GUO Qi-long~1, SHEN Yi-cheng~1, 2, ZHAO Xiong-chao~1, HONG Yan-ping~1, GU Zhi-jun~*11.Institute of Matter Structure Chinese Academy of Sciences, Corrosion Division, Xiamen 361012,China, 2.Graduate School of the Chinese Academy of Sciences,Beijing 100039,China