A high-temperature, high-pressure, tube furnace has been used to evaluate the long term stability of different monolithic ceramic and ceramic matrix composite materials in a simulated combustor environment. All of the tests have been run at 150 psia, 1204°C, and 15 percent steam in incremental 500 h runs. The major advantage of this system is the high sample throughput; >20 samples can be exposed in each tube at the same time under similar exposure conditions. Microstructural evaluations of the samples were conducted after each 500 h exposure to characterize the extent of surface damage, to calculate surface recession rates, and to determine degradation mechanisms for the different materials. The validity of this exposure rig for simulating real combustor environments was established by comparing materials exposed in the test rig and combustor liner materials exposed for similar times in an actual gas turbine combustor under commercial operating conditions. [S0742-4795(00)02402-9]

1.
van Roode, M., Brentall, W. D., Norton, P. F., and Pytanowski, G. P., 1993, “Ceramic Stationary Gas Turbine Development,” ASME Paper 93-GT-309.
2.
Price, J. R., Jiminez, O., Faulder, L., Edwards, B., and Parthasarthy, V., 1998, “Ceramic Stationary Gas Turbine Development Program—Fifth Annual Summary,” ASME Paper 98-GT-181.
3.
Stambler, I., 1997, “ARCO Operating Ceramics Centaur to Evaluate Actual Field Service,” Gas Turbine World, Sept.–Oct., pp. 20–22.
4.
Robinson, R. C., and Smialek, J. L., 1998, “SiO2 Scale Volatility and Recession of CVD SiC in a High Pressure Burner Rig,” Electrochemical Society Proceedings, P. Y. Hou, et al., eds., The Electrochemical Society, Pennington, NJ, 98-9, pp. 406–417.
5.
Etori, Y., et al., 1997, “Oxidation Behavior of Ceramics for Gas Turbines in Combustion Gas Flow at 1500°C,” ASME Paper 97-GT-355.
6.
Keiser, J. R., Howell, M., Williams, J. J., and Rosenberg, R. A., 1996, “Compatability of Selected Ceramics with Steam-Methane Reformer Environments,” Proceedings of Corrosion/96, NACE International, Houston, TX, Paper 140.
7.
Gray, P., Headinger, M., and Miller, A., 1996, “Long Term Tensile Stressed Oxidation and Fatigue Life of Enhanced SiC/SiC CMCs,” Proceedings of the 20th Annual Conference on Ceramic, Metal and Carbon Composites, Materials and Structures, M. Opeka, ed., pp. 865–877.
8.
Simpson
,
J. F.
,
Parthasarathy
,
V.
, and
Fahme
,
A.
,
1997
, “
Testing of Monolithic Ceramics and Fiber-Reinforced Ceramic Composites for Gas Turbine Combustors
,”
Ceramic Engineering and Science Proceedings
,
18
, No.
4
, pp.
229
238
.
9.
Opila
,
E. J.
, and
Hann
,
R. E.
,
1997
, “
Paralinear Oxidation of CVD SiC in Water Vapor
,”
J. Am. Ceram. Soc.
,
80
, No.
1
, pp.
197
205
.
10.
Fox
,
D. S.
,
1998
, “
Oxidation Behavior of CVD SiC and Si3N4 from 1200°C–1600°C
,”
J. Am. Ceram. Soc.
,
81
, No.
4
, pp.
945
950
.
11.
Opila, E. J., and Jacobsen, N. S., 1998, “Volatile Si-O-H Species in Combustion Environments,” Electrochemical Society Proceedings, P. Y. Hou, et al., eds., The Electrochemical Society, Pennington, NJ, 98-9, pp. 524–534.
12.
Opila
,
E. J.
,
1994
, “
Oxidation Kinetics of CVD SiC in Wet Oxygen
,”
J. Am. Ceram. Soc.
,
77
, No.
3
, pp.
730
736
.
13.
Opila
,
E. J.
,
1999
, “
Variation of the Oxidation Rate of SiC with Water-Vapor Pressure
,”
J. Am. Ceram. Soc.
,
82
, No.
3
, pp.
625
636
.
You do not currently have access to this content.