TY - GEN
T1 - Long-term microturbine exposure of an advanced alloy for microturbine primary surface recuperators
AU - Matthews, Wendy J.
AU - More, Karren L.
AU - Walker, Larry R.
PY - 2008
Y1 - 2008
N2 - Haynes Alloy HR-1201 forms a protective oxide scale when exposed to the harsh operating environment of a microturbine primary surface recuperator. Primary surface recuperators manufactured from HR-120 are currently in use on the Capstone C65 MicroTurbine2 . Long-term microturbine tests of this alloy are currently being conducted at an elevated turbine exit temperature (̃100F° higher than normal operation) at Capstone Turbine Corporation. Alloy samples that have been tested under steady-state microturbine operating conditions are removed after pre-determined exposure intervals for characterization by Capstone Turbine Corporation in collaboration with Oak Ridge National Laboratory. Such evaluations include characterization of surface oxide scales and the associated alloy compositional changes following steady-state operation ranging from 1,800 - 14,500 hours. Results from the microstructural and compositional analyses of these long-term, steady-state engine-tested HR-120 samples are used to illustrate the progression of alloy oxidation in the microturbine operating environment.
AB - Haynes Alloy HR-1201 forms a protective oxide scale when exposed to the harsh operating environment of a microturbine primary surface recuperator. Primary surface recuperators manufactured from HR-120 are currently in use on the Capstone C65 MicroTurbine2 . Long-term microturbine tests of this alloy are currently being conducted at an elevated turbine exit temperature (̃100F° higher than normal operation) at Capstone Turbine Corporation. Alloy samples that have been tested under steady-state microturbine operating conditions are removed after pre-determined exposure intervals for characterization by Capstone Turbine Corporation in collaboration with Oak Ridge National Laboratory. Such evaluations include characterization of surface oxide scales and the associated alloy compositional changes following steady-state operation ranging from 1,800 - 14,500 hours. Results from the microstructural and compositional analyses of these long-term, steady-state engine-tested HR-120 samples are used to illustrate the progression of alloy oxidation in the microturbine operating environment.
UR - http://www.scopus.com/inward/record.url?scp=69949177590&partnerID=8YFLogxK
U2 - 10.1115/GT2008-50037
DO - 10.1115/GT2008-50037
M3 - Conference contribution
AN - SCOPUS:69949177590
SN - 9780791843116
T3 - Proceedings of the ASME Turbo Expo
SP - 579
EP - 586
BT - 2008 Proceedings of the ASME Turbo Expo
T2 - 2008 ASME Turbo Expo
Y2 - 9 June 2008 through 13 June 2008
ER -