Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Michael I. Gusman"'
Publikováno v:
Scripta Metallurgica et Materialia. 31:1025-1030
Preceramic polymers that yield ceramic materials on heating have been investigated as precursors to fibers, binders, powders, and coatings. These materials have also been used as processing additives for ceramics, rheological control agents, and aids
Publikováno v:
16th AIAA/DLR/DGLR International Space Planes and Hypersonic Systems and Technologies Conference.
NASA Ames is pursuing a variety of approaches to modify and control the microstructure of UHTCs with the goal of improving fracture toughness, oxidation resistance and controlling thermal conductivity. The overall goal is to produce materials that ca
Autor:
Joseph Thomas Mcginn, Michael I. Gusman, Sylvia M. Johnson, Gregory A. Mcdermott, Yigal D. Blum
Publikováno v:
MRS Proceedings. 346
Polymeric precursors to Si3N4 were mixed with Si3N4 powder, in various combinations, to form coatings in Si3N4 and to control microstructure of Si3N4. The microstructure of polymer-derived ceramic and preceramic materials was examined by transmission
Publikováno v:
Advanced Ceramic Materials. 2:337-342
A method of preparing superconducting powders by freeze-drying is described. Powders produced by this method are homogeneous, have high purities, and are very reactive. Materials sintered from these powders have densities up to 89% of the theoretical
Publikováno v:
MRS Proceedings. 121
The freeze-drying method of synthesizing powders of the superconducting oxide YBa2Cu3O7-δ is described. This process produces homogeneous, submicron powders of high purity. The effects of salt selection, solution concentration and pH on the process
Conference
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