Influence of Cu and Zn Residues from Wire Electro-Discharge machining on TBS Durability
2014 (English)In: Proceedings of the 2014 Energy Materials Conference (CD-ROM), Wiley-TMS , 2014, 387-392 p.Conference paper (Refereed)
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.
Place, publisher, year, edition, pages
Wiley-TMS , 2014. 387-392 p.
TBC, superalloy, electro-discharge machining, contamination, oxidation
IdentifiersURN: urn:nbn:se:liu:diva-112668ISI: 000364592900045ISBN: 978-1119027942 (CD-ROM)OAI: oai:DiVA.org:liu-112668DiVA: diva2:769020
Energy Materials Conference 2014, Xian, China, 3-6 November 2014