US-France Cooperative Research: Structure and Properties ofCrystalline-Amorphous Composite Coatings on Stainless Steel

该奖项将支持美国和 法国材料科学家关于离子辅助涂层的主题 不锈钢 来自斯坦福大学的美国调查人员 大学，是：博士罗伯特辛克莱，博士威廉尼克斯和博士。 大卫史蒂文森。 法国同行是P. Moine教授， 普瓦捷大学冶金物理学院。 在过去的十年里，离子实现已经成为一种通用的， 是材料改性的有效方法， 包括金属、半导体、陶瓷、复合材料和 聚合物 在这个项目中，研究人员将进行一项 不锈钢离子辅助涂层的科学研究 钢 技术目标是实现低摩擦 系数，高耐磨和耐腐蚀的表面，通过使用 非晶TiNi结合BN。 科学问题解决 将为： 1. 涂层组织与离子束辐照的关系 加工条件，通过进行彻底的材料 对各种样品进行表征。 2. 表面性能与微观结构的相关性， 特别注意粘附力、纳米硬度、摩擦力 磨损和腐蚀。 普瓦捷实验室的离子注入设备齐全， 次级离子质谱和X射线表征，以及 摩擦学性能研究 斯坦福大学的研究小组 截面透射电子显微镜的经验， 薄膜的力学性能和电化学腐蚀 问题研究 这项研究的结果应该提供1）新的知识 关于新型纳米材料的结构、性质和形成机理， 和有前途的不锈钢涂层和2）改进 了解离子辅助镀膜技术。

This award will support collaborative research between U.S. and French material scientists on the topic of ion-assisted coating of stainless steel. The U.S. investigators, all from Stanford University, are: Dr. Robert Sinclair, Dr. William Nix and Dr. David Stevenson. The French counterpart is Professor P. Moine, Laboratoire de Metallurgie Physique, University of Poitiers. Ion-implementation has become over the past decade a versatile and effective method for the modification of materials properties, including those of metals,semi-conductors, ceramics, composites and polymers. In this project the investigators will carry out a scientific investigation of the ion-assisted coating of stainless steel. The technical goal is to realize a low friction coefficient, high wear and corrosion resistant surface, by using amorphous TiNi combined with BN. The scientific issues addressed will be: 1. The relationship of the coating microstructure with ion-beam processing conditions, by carrying out thorough material characterization on a wide variety of samples. 2. Correlation of the surface properties with the microstructure, with particular attention to adhesion, nano-hardness, friction, wear and corrosion. The Poitiers laboratory is well-equipped for the ion-implantation, secondary ion-mass spectrometry and x-ray characterization, and the tribological property studies. The Stanford group has much experience with cross-section transmission electron microscopy, mechanical properties of thin films and electrochemical corrosion studies. Results of this research should provide 1) new knowledge about the structure, properties and formation mechanisms of novel and promising coatings of stainless steel and 2) improved understanding of ion-assisted coating technology.