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- Publications
- Influence
Substrate and bond coat compositions: factors affecting alumina scale adhesion
- B. Pint, I. Wright, W. Lee, Y. Zhang, K. Pruessner, K. Alexander
- Materials Science
- 1 May 1998
Abstract Thermally grown oxide scales that form beneath ZrO 2 top coats play an important role in determining the performance of thermal barrier coatings. Numerous factors, including the composition… Expand
Influence of ZrO2 Grain Size and Content on the Transformation Response in the Al2O3─ZrO2 (12 mol% CeO2) System
- P. Becher, K. Alexander, A. Bleier, S. B. Waters, W. M. Warwick
- Materials Science
- 1 March 1993
Based on experimental and modeling studies, the rate of increase in the martensite start temperature M[sub s] for the tetragonal-to-monoclinic transformation with increase in zirconia grain size is… Expand
Neutron Diffraction Measurements of the Residual Stresses in Al2O3-ZrO2 (CeO2) Ceramic Composites
- X. Wang, C. Hubbard, K. Alexander, P. Becher, J. Fernandez-Baca, S. Spooner
- Materials Science
- 1 June 1994
High-resolution neutron powder diffraction was used to study the residual stresses in Al2O3-ZrO2 (12 mol% CeO2) ceramic composites containing 10, 20, and 40 vol% ZrO2 (CeO2). The diffraction data… Expand
Microstructural Design of Silicon Nitride with Improved Fracture Toughness: I, Effects of Grain Shape and Size
- P. Becher, E. Y. Sun, +8 authors M. E. Brito
- Materials Science
- 20 January 2005
The use of self-reinforcement by larger elongated grains in silicon nitride ceramics requires judicious control of the microstructure to achieve high steady-state toughness and high fracture… Expand
Microstructural Design of Silicon Nitride with Improved Fracture Toughness: II, Effects of Yttria and Alumina Additives
Significant improvements in the fracture resistance of self-reinforced silicon nitride ceramics have been obtained by tailoring the chemistry of the intergranular amorphous phase. First, the overall… Expand
Grain Boundary Segregation of Cation Dopants in α ‐ Al2 O 3 Scales
- B. Pint, K. Alexander
- Chemistry
- 1 June 1998
A fe-20 atom % Cr-10% Al matrix was dispersed with a wide range of oxide particulates in order to study the effect of oxygen-active dopants on high-temperature oxidation performance and alumina scale… Expand
Grain Growth Kinetics in Alumina–Zirconia (CeZTA) Composites
- K. Alexander, P. Becher, S. B. Waters, A. Bleier
- Materials Science
- 1 April 1994
Grain growth kinetics in alumina-rich, zirconia-alumina composites have been examined as a function of volume fraction of zirconia. Both the microstructural scale and character alter during grain… Expand
In‐situ SEM observation of the fracture behaviour of titanium carbide/nickel aluminide composites
- K. Plucknett, P. Becher, K. Alexander
- Materials Science
- 1 February 1997
A range of experimental titanium carbide (TiC)/nickel aluminide (Ni3Al) composites have been developed. The Ni3Al content has been varied from 15 to 40 vol.%, for two different alloy compositions.… Expand
OXIDATION BEHAVIOR OF PLATINUM-ALUMINUM ALLOYS AND THE EFFECT OF ZR DOPING
- E. Dickey, B. Pint, K. Alexander, I. Wright
- Materials Science
- 1 December 1999
The isothermal and cyclic oxidation behavior of PtAl and PtAl+Zr was studied followed by postoxidation microstructural and microchemical analyses. Their isothermal oxidation performance at 1200… Expand
Some effects of metallic substrate composition on degradation of thermal barrier coatings
- I. Wright, B. Pint, W. Lee, K. Alexander, K. Pruessner
- Materials Science
- 31 December 1997
Comparisons have been made in laboratory isothermal and cyclic oxidation tests of the degradation of oxide scales grown on single crystal superalloy substrates and bond coating alloys intended for… Expand