Plasma-electrolytic oxidation of thermally sprayed aluminium coatings for high-temperature wear applications under particle-loaded hot-gas jets

热喷涂铝涂层的等​​离子电解氧化，用于颗粒负载热气射流下的高温磨损应用

• 批准号: 265717247
• 负责人: Professor Dr.-Ing. Thomas Lampke
• 金额: --
• 依托单位: Professur Werkstoff- und Oberflächentechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/265717247?language=en
• 关键词: Plasma; electrolytic; oxidation; thermally; sprayed

Ceramic coatings, especially of aluminium oxide, are applied to increase resistance against wear and corrosion and for thermal insulation of metallic surfaces. Plasma-electrolytic oxidation (PEO) of thermally sprayed aluminium coatings is an innovative production method by which even steel and polymeric substrates can be coated with highly abrasive wear-resistant PEO coatings. Al coatings incompletely converted to Al2O3 are strongly limited with regard to the operation temperature. The relatively brittle ceramic coatings only show a very low resistance against particle jet erosion at high impact angles. This research project aims to make thermally sprayed and plasma-electrolytically treated aluminium coatings accessible to new fields of application such as smelting industry and powertrain production. A significant decrease in brittleness of the PEO coatings by incorporating ductile elements like copper or nickel into the aluminium layer and thus into the PEO coating will be focussed on in order to achieve considerably increased resistance against particle jet erosion at high impact angles. Higher operation temperatures of the ceramic composite coatings are intended by applying heat-resistant materials like titanium.

陶瓷涂层，特别是氧化铝的涂料，用于增加对磨损和腐蚀的耐药性以及金属表面的热绝缘。热喷涂的铝涂层的血浆 - 电解氧化（PEO）是一种创新的生产方法，即使钢和聚合物底物也可以用高度耐磨的耐磨性PEO涂层涂覆。在操作温度方面，未完全转换为AL2O3的Al涂层受到强烈限制。相对脆弱的陶瓷涂层仅显示出对高冲击角度的颗粒喷射侵蚀的电阻非常低。该研究项目旨在使热喷涂和血浆 - 电解处理的铝涂料可容纳新的应用领域，例如冶炼行业和动力总成生产。通过将铜或镍（如镍或镍）结合到铝层中并因此将PEO涂层的延性元素掺入PEO涂料的脆性显着降低，从而将重点放在PEO涂层中，以便在高冲击角度以大大提高对粒子射流侵蚀的耐药性。陶瓷复合涂料的较高操作温度是通过施加耐热材料（如钛）来实现的。

项目成果

Plasma Electrolytic Oxidation of High-Strength Aluminium Alloys—Substrate Effect on Wear and Corrosion Performance

• DOI: 10.3390/met8050356
• 发表时间: 2018-05
• 作者: M. Sieber;F. Simchen;R. Morgenstern;I. Scharf;T. Lampke