SBIR Phase I: A Superior Corrosion Resistant Undercoating for Vapor Deposited Hard Coatings

SBIR 第一阶段：用于气相沉积硬质涂层的卓越耐腐蚀底漆

• 批准号: 0060288
• 负责人: Hamlin Jennings
• 金额: $ 9.99万
• 依托单位: Evanston Materials Consulting Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-01-01 至 2001-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0060288&HistoricalAwards=false
• 关键词: SBIR; Phase; Superior; Corrosion; Resistant

This Small Business Innovation Research (SBIR) Phase I project will develop a new type of corrosionresistant undercoating for application to metal substrates prior to the deposition of a hard decorative top coat applied by physical vapor deposition (PVD). PVD metal nitride coatings such as TiN and ZrN are extremely hard, and thus provide excellent scratch and wear resistance. However, they do not provide adequate corrosion resistance because of micron-scale flaws that act as corrosion sites, and thus a corrosion-resistant underlayer is needed. This undercoat must be smooth, sufficiently hard to support the hard PVD coating, and provide good adhesion to both the substrate and to the PVD coating. Ideally, the undercoat would provide a leveling effect to minimize polishing of the metal substrate. Recently, a new method for coating metal with a thin layer of glass has been developed. This coating, which is being optimized as a protective outercoating for polished aluminum, has many of the attributes of a successful PVD undercoating including corrosion resistance, hardness, and leveling. The key technological step will be to develop good adhesion between this glass coating and a PVD coating, and that will be the main focus of the proposed research.PVD coatings are widely used for applications that require both durability and an attractive appearance; for example, metal-nitride coatings can be made to closely resemble polished metals including brass, gold, and chrome. Current applications include personal items (pens, glasses, watches, jewelry, etc.), door hardware, plumbing fixtures, decorative trim on automobiles, and architectural detailing. All these PVD applications require an undercoating to improve corrosion resistance, but current undercoating options are inadequate for a number of reasons such as cost and environmental impact. Electroplating, the most widely used undercoating, uses significant amounts of toxic chemicals. A new type of undercoating which could meet performance and cost requirements while being environmentally friendly would thus have significant and immediate market potential.

该小型企业创新研究（SBIR）第一阶段项目将开发一种新型的耐腐蚀底漆，用于在通过物理气相沉积（PVD）沉积硬质装饰性面漆之前应用于金属基材。诸如TiN和ZrN的PVD金属氮化物涂层非常硬，因此提供优异的耐刮擦性和耐磨性。 然而，它们不能提供足够的耐腐蚀性，因为微米级的缺陷充当腐蚀位点，因此需要耐腐蚀底层。该底涂层必须光滑，足够硬以支撑硬PVD涂层，并提供对基材和PVD涂层的良好粘附性。理想地，底涂层将提供流平效果以使金属基底的抛光最小化。最近，一种在金属上涂上一层薄玻璃的新方法已经被开发出来。 该涂层作为抛光铝的保护性外涂层进行了优化，具有成功的PVD底涂层的许多属性，包括耐腐蚀性、硬度和流平性。 关键的技术步骤将是在玻璃涂层和PVD涂层之间形成良好的附着力，这将是拟议研究的主要焦点。PVD涂层广泛用于需要耐用性和吸引人的外观的应用;例如，金属氮化物涂层可以制作得非常类似于抛光的金属，包括黄铜、金和Chrome。目前的应用包括个人物品（笔、眼镜、手表、珠宝等），门五金、管道装置、汽车装饰和建筑细节。 所有这些PVD应用都需要底涂层来提高耐腐蚀性，但由于成本和环境影响等诸多原因，目前的底涂层选择是不够的。电镀，最广泛使用的底漆，使用大量的有毒化学品。因此，一种既能满足性能和成本要求，又对环境友好的新型底漆将具有巨大的直接市场潜力。