TY - GEN
T1 - Interdiffusion behavior of electroplated platinum-iridium alloys on nickel-base single crystal superalloy TMS-82+
AU - Wu, Y. N.
AU - Suzuki, A.
AU - Murakami, H.
AU - Kuroda, S.
PY - 2006
Y1 - 2006
N2 - In the present study, platinum-iridium alloys (Ir = 15.8, 27.3, 36.1, 100at.%) were electroplated on a nickel-base single crystal superalloy TMS-82+ followed by a diffusion treatment at 1373K for 1 h. Interdiffusion behavior between the Pt-Ir films and substrates was investigated in terms of chemical composition, phase constitution and morphology. X-ray analysis revealed that annealed specimens consisted of several fee solid solutioned phases with various lattice parameters, together with ordered intermetallic compounds (Ll 2-(Pt,Ni)3Al and B2-(Ir,Ni)Al), due to the inward diffusion of Pt and Ir from the electrodeposited films to the superalloy substrates, and the outward diffusion of solute elements (Ni, Al, Cr, Co) in the superalloy substrates into the films during annealing. The depth concentration analysis indicated that the Pt-36.1Ir film effectively retarded the outward diffusion of solute elements, especially nickel, from the substrate.
AB - In the present study, platinum-iridium alloys (Ir = 15.8, 27.3, 36.1, 100at.%) were electroplated on a nickel-base single crystal superalloy TMS-82+ followed by a diffusion treatment at 1373K for 1 h. Interdiffusion behavior between the Pt-Ir films and substrates was investigated in terms of chemical composition, phase constitution and morphology. X-ray analysis revealed that annealed specimens consisted of several fee solid solutioned phases with various lattice parameters, together with ordered intermetallic compounds (Ll 2-(Pt,Ni)3Al and B2-(Ir,Ni)Al), due to the inward diffusion of Pt and Ir from the electrodeposited films to the superalloy substrates, and the outward diffusion of solute elements (Ni, Al, Cr, Co) in the superalloy substrates into the films during annealing. The depth concentration analysis indicated that the Pt-36.1Ir film effectively retarded the outward diffusion of solute elements, especially nickel, from the substrate.
KW - Electroplating
KW - Interdiffusion
KW - Pt-Ir
UR - http://www.scopus.com/inward/record.url?scp=37849049656&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=37849049656&partnerID=8YFLogxK
U2 - 10.4028/0-87849-409-x.293
DO - 10.4028/0-87849-409-x.293
M3 - Conference contribution
AN - SCOPUS:37849049656
SN - 9780878494095
T3 - Materials Science Forum
SP - 293
EP - 300
BT - High-Temperature Oxidation and Corrosion 2005 - Proceedings of the International Symposium on High-Temperature Oxidation and Corrosion 2005
PB - Trans Tech Publications Ltd
T2 - International Symposium on High-Temperature Oxidation and Corrosion, ISHOC-05
Y2 - 30 November 2005 through 2 December 2005
ER -