材料期刊网

Fabrication of meander and spiral type micro inductors

T.S.Yoont , W.S.Cio , C.O.Kim , H.W.Kang , Y.H.Kim

材料科学技术（英文）

To obtain microstructure of magnetic devices, the thin film inductors were fabricated by the process such as thin film manufacturing, photolithography and wet etching. The frequency characteristics of these devices are measured at high frequency range. When the inductor sizes of the spiral and the meander type are same, the inductance and the quality factor of the spiral type inductor are larger than those of the meander type inductor, but the driving frequency of the spiral type inductor is fewer than that of the meander type inductor.

关键词:

CIO薄膜材料制备进展

郎野 , 胡礼中 , 长贺秋 , 宁志敏 , 杜建锋 , 高卓

兵器材料科学与工程 doi:33-1331/TJ.20120302.1649.005

随着侦察及动态跟踪技术的飞跃发展和广泛应用,使战场的单向或双向透明度增大.如果不综合运用光电对抗技术,将难以对付红外、激光、雷达等侦察或制导.透明导电薄膜CIO(CdIn2O4)是一种高性能半导体材料,通过调节掺杂浓度,可实现红外波段的高反射性及可见光波段的高透过性.但由于CIO薄膜体系的复杂性和纯CIO薄膜的大面积制备尚没有完全解决,严重阻碍了它在光电对抗、红外防护等方面的实际应用.综述CIO薄膜的多种制备方法以及各自的优缺点,并着重介绍CIO薄膜在抗红外领域的应用.

关键词: CIO薄膜 , 红外 , 透光率 , 高反射

CIO纳米粉体制备方法的研究

姚云 , 宋宁 , 严玉环

材料导报

研究了CIO纳米粉体的制备.以4N的In、HCl、CuCl2·2H2O、Li2CO3、CuCl等试剂为原料,采用固相法、阳离子交互反应法、化学共沉淀法制备CIO纳米粉体.通过TG-DTZ、CRD、SEM、TEM、BET等现代分析测试手段对制备的粉体进行表征.结果表明,目相法制备的粉体晶粒粒径为1μm,比表面积为3.53m2/g;阳离子交互反应击制备的粉体晶粒粒径为30.032nm,比表面积为27.4m2/g;化学共沉淀法制备的粉体团聚少、分散性好,晶粒粒径为27.815nm、比表面积为42.06m2/g,较前2种方法具有优势.

关键词: CIO纳米粉体 , 同相反应法 , 阳离子交互反应法 , 化学共沉淀法 , 制备

Microstructure and preparation of nano S-W-S new solid lubrication system

Transactions of Nonferrous Metals Society of China

The method for preparing a new solid lubrication system of nano S-W-S was presented. The microstructure of the S-W-S nano cluster was investigated using TEM and XRD. The system is a mixture clusters of both monocrystal and polycrystal of layered hexagonal structure with one tungsten atom linking with two sulphur atoms, and the week Van der Waals' force bonding together the different layers. The changes of electronic structure were studied with XPS. The hybridization of different electronic shelf orbitals of the sulphur atom in the nano cluster is regarded as the quantum size effect. The clusters are found to be of a closed spherical,structure without any dangling bond.

关键词: solid lubrication system;nanometer cluster;quantum size effect;powders

Ni-Fe-W-S刷镀层耐磨性机理研究

张远明 , 惠文华

材料保护 doi:10.3969/j.issn.1001-1560.2001.06.007

采用扫描电子显微镜、X射线光电子能谱(XPS)、俄歇电子能谱(AES)等手段研究了代铬镀层(Ni-Fe-W-S).在磨损前后的成分变化及价态变化,发现WS2具有固体润滑作用,并初步探讨了Ni-Fe-W-S合金层耐磨性的作用机理.研究表明,偏聚的W与S形成立方晶系的WS2作为固体润滑剂可有效地降低摩擦系数,同时,W的偏聚使层错能降低,不易形成磨损裂纹.

关键词: 合金镀层 , 耐磨性 , 偏聚

S355J2W耐候钢的耐腐蚀性能

鲁二敬 , 卢峰华 , 许鸿吉 , 谢明 , 钮旭晶

机械工程材料

通过周期浸润腐蚀试验，对比研究了S355．12W耐候钢和Q345R低合金钢在NariSOs溶液中的耐腐蚀性能，并用扫描电镜对腐蚀产物进行了观察和分析。结果表明：在相同试验条件下，S355J2W耐候钢的腐蚀速率低于Q345R钢的；S355J2W耐候钢会在表面形成黑褐色锈层，而Q345R钢表面形成橘红色易剥落的疏松锈层；S355J2W耐候钢腐蚀产物微观形貌为沿放射性方向生长的针状晶体，Q345R钢为颗粒状聚合物堆积而成，形状无规则，颗粒之间有较大的空隙。

关键词: S355J2W耐候钢 , 周期浸润腐蚀试验 , 耐腐蚀性能

Unusual W-shaped Galvanic Cell Model of ISCC of α-brass in Neutral Mattsson's Solution

WU Shaobin , R. J. Arsenault , I. R. Kramer Metallurgical Materials Laboratory , University of Maryland , USA.

材料科学技术（英文）

Intergranular stress corrosion cracking (ISCC) of α-brass in neutral Mattsson's solution was found to be controlled by an unusual "W"-shaped galvanic cell whose cathode is the grain boundary oxide film (G.B.0. film) and surface film and the anode is fresh metal at the cracked tip on both sides of the G.B.0. film. Redox reactions involved in the cell have been proposed here. According to this mdel, initidtion of ISCC is caused by the rupturing of surface film along grain boundaries, thus forming a galvanic cell. Propagation of ISCC resulted from alternate advances of G.B.0. film and dissolution on both sides of G.B.0. film caused by the effect of electrochemical reaction. This work developed an effective approach to investigate the embrittlement process at the tip of the crack, by increasing the length of the embrittlement region through constant strain test and distinguishing the morphology and the nature of the corrosion products by optical microscopy and scanning electron microscopy (SEH).

关键词: α-brass , null , null , null

S355J2W+N钢激光-MAG复合焊与MAG焊对比

谷晓鹏 , 段珍珍 , 邓钢 , 谷晓燕

材料工程 doi:10.11868/j.issn.1001-4381.2015.02.004

利用激光-MAG复合焊和MAG焊进行了厚板S355J2W+N低碳钢的焊接实验,分析了两种焊接方法接头的微观组织和力学性能.结果表明:复合焊和MAG焊焊缝接头均由焊缝区、过热区、重结晶区和不完全重结晶区构成,复合焊接头截面呈“高脚杯”状特点,焊缝填充量和热影响区宽度较MAG焊明显减小.复合焊由于冷却速率快,过热区魏氏组织略有增多,硬度高于MAG焊,抗拉强度和弯曲性能与MAG焊相比,无显著差异,均能够满足生产标准的要求.

关键词: S355J2W+N , 激光 , MAG , 复合焊 , 接头组织 , 性能

金属表面功能性Mo(W)-S彩色簇合物膜的结构与性能

李道华 , 忻新泉

表面技术 doi:10.3969/j.issn.1001-3660.2004.04.015

采用加速腐蚀实验、LSV、CV、FT-IR、FT-Raman、XPSS和AES研究了Mo(W)S24-在金属表面的成键特征和波谱变化,探讨了生成的彩色簇合物膜的组成、结构、性能、化学状态和形成机理.结果表明,膜层中存在桥基Mo(W)-S-M键、端基Mo(W)=S和Mo(W)=O键.膜为多分子层组成的复杂体系,属于功能性修饰层,其颜色是各组分统计分布的结果.

关键词: 金属表面 , 配位化学反应 , Mo(W)-S , 彩色簇合物膜 , 结构与性能

锌表面Mo(W)-S-Zn簇合物转化膜的XPS和AES研究

李道华 , 叶向荣 , 周益明 , 忻新泉

材料保护 doi:10.3969/j.issn.1001-1560.1999.04.002

在锌表面获得了多种不同颜色且具有金属光泽的不溶性Mo(W)-S-Zn簇合物转化膜.所获膜层具有良好的耐蚀性能和装饰效果,加热处理后颜色将发生变化,加速腐蚀试验结果表明,金黄色膜耐蚀性最佳.FT-IR、FT-Raman、XPS和AES分析表明,该膜层厚度约为60 nm.钼在膜表面的价态为+6价,而在膜内则以+6、+4价共存.从AES深度分布曲线可知,其组织为32.5%Zn,19.3%Mo,39.4%S,8.5%O.膜为多分子层组成的复杂体系,其颜色是各组分统计分布的结果.

关键词: Mo(W)-S-Zn簇合物 , 转化膜 , XPS , AES