Thermally sprayed coating for high temperature static seals in aeroengines

用于航空发动机高温静密封的热喷涂涂层

• 批准号: 530409-2018
• 负责人: Chromik, Richard
• 金额: $ 8.2万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=692983
• 关键词: Thermally; sprayed; coating; temperature; static

Reliability, safety and sustainability are all significant driving forces in the aerospace industry. Developments of new materials, processes and manufacturing steps, must meet these needs and also be economically viable. This proposal is focused on addressing these driving forces for a particular component that is found throughout a gas turbine engine, called a 'static seal'. This seal brings the surfaces of two components together to create a barrier between two sections of the engines at differing temperatures. The challenge is that the seal experiences vibration and exposure to high temperatures that leads to damage and eventual failure of the seal. Current technology for static seals is only capable of meeting the needs of the current generation of engines and do so with the caveat that seals will need to be inspected, repaired and replaced quite regularly. Using thermal spray, a technology that applies a protective coating, we will develop four new coatings based on materials that have shown promise for their high temperature capabilities. Development of innovative coatings that resist damage at high temperatures better than current technology will make static seals in gas turbine engines more reliable, safer and sustainable.

可靠性、安全性和可持续性都是航空航天业的重要驱动力。新材料、工艺和制造步骤的开发必须满足这些需求并且在经济上可行。该提案的重点是解决整个燃气涡轮发动机中的特定部件（称为“静态密封”）的这些驱动力。这种密封将两个部件的表面结合在一起，在不同温度下的发动机的两个部分之间形成屏障。挑战在于密封件会经历振动并暴露在高温下，从而导致密封件损坏并最终失效。目前的静态密封技术只能满足当前一代发动机的需求，但需要注意的是，密封件需要定期检查、维修和更换。使用热喷涂（一种应用保护涂层的技术），我们将基于已显示出高温性能的材料开发四种新涂层。开发比现有技术更好地抵抗高温损坏的创新涂层将使燃气涡轮发动机的静密封更加可靠、安全和可持续。