Zobrazeno 1 - 10
of 53
pro vyhledávání: '"K. B. Alexander"'
Publikováno v:
Journal of the American Ceramic Society. 79:2626-2632
Interfacial microstructures in βP-Si3N4(w)-Si-Al-Y-O-N-glass systems were investigated by systematically varying the nitrogen content and the Al:Y ratio of the glass matrix. High-resolution and analytical transmission electron microscopy (HREM and A
Publikováno v:
Journal of the American Ceramic Society. 81:2661-2669
The elastic anisotropy of s-silicon nitride was examined using nanoindentation techniques. A coarse-grained polycrystalline sample composed of whiskers up to 15 µm in diameter and 100 µm in length allowed for the positioning of small indentations n
Autor:
Shirley B. Waters, Manuel E. Brito, Chun-Hway Hsueh, Ellen Y. Sun, Kevin P. Plucknett, Paul F. Becher, Kiyoshi Hirao, K. B. Alexander
Publikováno v:
ResearcherID
Scopus-Elsevier
Scopus-Elsevier
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 microstructure of the material was controlled by in
Publikováno v:
Intermetallics. 9:735-739
The oxidation behavior of iron aluminides was investigated in various environments at 900 to 1200 °C. The effect of water vapor on total specimen mass gain was minimal. At 1000 and 1100 °C, the mass gain of Fe–28at.%Al–5Cr without Zr was a fact
Publikováno v:
Journal of Materials Research. 14:4531-4540
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 °C was similar to that of NiAl and NiAl + Zr. In shor
Publikováno v:
Scripta Materialia. 40:241-247
Segregation of sulfur to an oxide/alloy interface has been studied with a deposited alumina film on an iron aluminide substrate. The as-deposited film was mainly amorphous. High temperature anneal at 1000 C in an inert atmosphere prevented film growt
Autor:
Bruce A. Pint, K. B. Alexander
Publikováno v:
Journal of The Electrochemical Society. 145:1819-1829
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 microstructure. The effects of these various catio
Publikováno v:
Materials Science and Engineering: A. 245:201-211
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 of both the alloy substrate and the bond coat, affect adhesi