SBIR PHASE I: Modifying Hard Carbon Coatings for Improved Tribological Properties

SBIR 第一阶段：改性硬碳涂层以改善摩擦学性能

• 批准号: 9561410
• 负责人: Andrew Freedman
• 金额: $ 7.5万
• 依托单位: Aerodyne Research Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-02-01 至 1996-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9561410&HistoricalAwards=false
• 关键词: SBIR; PHASE; Modifying; Hard; Carbon

9561410 Dai This Small Business Innovation Research Phase I project concerns the chemical modification of hard carbon coatings through reaction with radical species in order to improve their tribological performance. These modifications can also lead to the realization of wear resistant solid lubricant coatings. Two complementary approaches will be examined in parallel, fluorination and nitridation. Fluorination of hard carbon surfaces can reduce their friction, while reaction of hard carbon with active nitrogen species may produce nitrogen-containing carbon films with excellent thermal stability and hardness. This Phase I project will investigate pathways to improving the tribological properties (friction, striction and wear) of hard carbon coatings through chemical modifications of the surface region. The goal is to define the mechanisms of fluorination and nitridation using novel sources and to establish quantitatively the relationship between the surface chemical composition, surface morphology and the tribological properties. X-ray photoelectron spectroscopy (XPS) and Fourier Transform Infrared (FTIR) spectroscopy will be used in conjunction with Atomic Force Microscopy (AFM) to characterize the modified films' chemical composition, surface structure, morphology and their tribological performances (friction, striction). In addition, a wear rester will be used to characterize the wear resistance of the modified films. This project is designed for the development of solid lubricant coatings in the areas of precision tooling, magnetic recording, space technology, etc. A major market that would be affected would be magnetic disk media. As recording density increases, the distance (fly height) between the read/write head and the disk has to be decreased; full contact operation is under consideration. As a result, the tribological properties of the hard carbon overcoats directly affect the dualibility of the disk and the read/write head.

9561410 Dai 这个小型企业创新研究第一阶段项目涉及通过与自由基物质反应对硬碳涂层进行化学改性，以提高其摩擦学性能。 这些修改还可以实现耐磨固体润滑涂层。 将并行研究两种互补的方法：氟化和氮化。 硬碳表面的氟化可以减少其摩擦，而硬碳与活性氮物质的反应可以产生具有优异热稳定性和硬度的含氮碳膜。 该第一阶段项目将研究通过表面区域的化学改性来改善硬碳涂层的摩擦学性能（摩擦、收缩和磨损）的途径。目标是利用新的来源来定义氟化和氮化的机制，并定量地建立表面化学成分、表面形态和摩擦学性能之间的关系。 X射线光电子能谱（XPS）和傅里叶变换红外（FTIR）光谱将与原子力显微镜（AFM）结合使用，以表征改性薄膜的化学成分、表面结构、形态及其摩擦学性能（摩擦、收缩）。 此外，还将使用耐磨仪来表征改性膜的耐磨性。 该项目旨在开发精密模具、磁记录、空间技术等领域的固体润滑涂层。受影响的主要市场将是磁盘介质。 随着记录密度的增加，读/写头与磁盘之间的距离（飞行高度）必须减小；正在考虑全面接触操作。 因此，硬碳涂层的摩擦学性能直接影响磁盘和读/写头的双重性。