Functional Ceramic Coatings Deposited by Solution Precurser Plasma Spray

溶液前驱体等离子喷涂沉积的功能陶瓷涂层

• 批准号: RGPIN-2015-06377
• 负责人: Coyle, Thomas
• 金额: $ 2.55万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=648238
• 关键词: Functional; Ceramic; Coatings; Deposited; Solution

Solution precursor plasma spraying (SPPS) is a process capable of depositing coatings of almost anycomposition by injecting solutions of precursor salts corresponding to the desired coating composition into a DC-arc plasma. The rapid formation of the solid from the solution results in extremely fine crystallite sizes, typically on the order of 20-30 nm. Coating structures can range from extremely high porosities to nearly completely dense. However, a number of complex phenomena are involved and significant challenges exist in understanding and controlling the process in order to be able to reliably deposit coatings of the desired structure, composition, and properties.******The proposed research programme will extend and expand our recent work in SPPS. There are two major objectives. One is to further develop and demonstrate the potential of this process to produce unique, high performance deposits of for specific applications. Of particular interest is the electrochemical performance of functional ceramic coatings as electrodes in ultra-capacitors and Li-ion batteries. The second major objective is to develop a better understanding of the phenomena involved in the process through coupling of experiments, diagnostics, and characterization of coating microstructures with numerical modelling of the evaporation, break-up and collision of droplets in the plasma, the precipitation of product phases in the droplets, the heating, melting, and impact of the particles on the substrate.**

溶液前体等离子体喷涂（SPPS）是一个能够通过将与所需涂层组成相对应的前体沙拉溶液注入DC-ARC等离子体的过程，该过程几乎可以沉积任何组成的涂层。溶液中固体的快速形成产生极高的晶体大小，通常在20-30 nm的阶。涂层结构的范围从极高的孔隙率到几乎完全致密。但是，涉及许多复杂的现象，并在理解和控制过程中存在重大挑战，以便能够可靠地沉积所需结构，组成和特性的涂层。******拟议的研究计划将扩展和扩展我们最近在SPP中的工作。有两个主要目标。一种是进一步开发并证明这一过程的潜力，以产生特定应用的独特的高性能沉积物。特别有趣的是功能性陶瓷涂料作为超摄影机和锂离子电池中电极的电化学性能。第二个主要目标是通过耦合实验，诊断和表征涂层微观结构，以经济的数值建模，等离子体中的滴剂的分解和碰撞来更好地理解该过程中所涉及的现象。