INFLUENCE OF Cu AND Zn RESIDUES FROM WIRE ELECTRO-DISCHARGE MACHINING ON TBC DURABILITY

摘要：

　　Thermal barrier coatings(TBC)are deposited on superalloys in gas turbines to prolong component life.Electro-discharge machining(EDM)provides a convenient way of machining superalloys prior to coating deposition.Wire-EDM may leave residues from the wire material on the cut surface.A study was performed to investigate if brass residues from the EDM wire affected TBC oxidation behavior and spallation life.Isothermal oxidation at 1050℃ and thermal cycling at 1100℃ were performed on plasma sprayed TBCs on two different EDM cut substrates.No decrease in TBC life was detected due to the brass residues on the cut surfaces.

关键词： TBC superalloy electro-discharge machining contamination oxidation

作者: Robert Eriksson Ru Lin Peng Xin-Hai Li Sten Johansson

作者单位: Siemens AG,Energy Sector Huttenstr.12 Berlin,10553,Germany Department of Management and Engineering Link(o)ping University Link(o)ping,58183,Sweden Siemens Industrial Turbomachinery AB Finsp(a)ng,61283,Sweden

会议类型: 国际会议

会议名称: Energy Materials 2014(第一届能源材料国际会议)

会议地点: 西安

会议语种:英文

页码: 387-392

在线出版日期: 2014-11-04（万方平台首次上网日期，不代表论文的发表时间）