Thermally sprayed coating for high temperature static seals in aeroengines

可靠性、安全性和可持续性都是航空航天工业的重要驱动力。新材料，工艺和制造步骤的发展，必须满足这些需求，也在经济上可行。该提案的重点是解决燃气涡轮发动机中被称为“静密封”的特定部件的这些驱动力。这种密封将两个部件的表面结合在一起，在不同温度下形成发动机两个部分之间的屏障。面临的挑战是，密封会经历振动和高温，从而导致密封损坏并最终失效。目前的静密封技术只能满足当前一代发动机的需求，而且需要注意的是，静密封需要定期检查、维修和更换。我们将利用热喷涂技术（一种应用于保护涂层的技术），开发四种基于具有高温性能的材料的新涂层。开发比现有技术更能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、可持续。

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.