Graded plasma-anodised oxide coatings for wear and corrosion protection on titanium aluminides

用于对铝化钛进行磨损和腐蚀防护的分级等离子阳极氧化涂层

• 批准号: 253127141
• 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 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/253127141?language=en
• 关键词: Graded; plasma; anodised; oxide; coatings

Titanium aluminides show the potential to substitute Ni-based alloys in temperature ranges up to 800 °C. However, a broad use as light-weight construction materials - e.g. in aircraft turbines - is not yet opened up due to their brittleness at room temperature and their low resistances against wear as well as high-temperature oxidation. As a conclusion, protective coatings have to improve the wear and oxidation behaviour. To face these demands, the present project investigates the plasma-electrolytic anodic oxidation (PAO, or plasma-electrolytic oxidation PEO), that is already generally accepted in its application on tiitanium alloys. The scientific aim of the project is the development, investigation and description of a process that produces graded ceramic protive coatings on titanium aluminides that show alumina-rich top layers. This aim will be achieved by two separated scientific branches. The first approach investiagtes a two-staged process using a preliminary aluminium donator coating that will be fully oxidised during the plasma-electrolytic anodising to form a dense alumina protective top layer. The second approach investigates the influences of electrolyte additives (aluminates) to achieve a one-staged plasma-anodising process for the direct production of alumina-rich graded PAO coatings on titanium aluminides. Both approaches will provide basic knowledge concerning formation, microstructure and behaviour of PAO coatings on titanium aluminides.

钛合金显示在高达800°C的温度中替代Ni基合金的潜力 - e.g。氧化。在表现出氧化铝富含铝的泰坦尼群岛上，将攻击科学的分支机构。在钛合金上实现PAO涂层。

项目成果

Plasma electrolytic oxidation of Titanium Aluminides

铝化钛的等离子体电解氧化

• DOI: 10.1088/1757-899x/118/1/012025
• 发表时间: 2016
• 期刊: IOP Conference Series: Materials Science and Engineering
• 作者: Morgenstern;Sieber;Lampke;Wielage
• 通讯作者: Wielage