A. Lightfoot
Massachusetts Institute of Technology
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by A. Lightfoot.
MRS Proceedings | 1994
Wendell E. Rhine; A. Lightfoot; Dietmar Seyferth; John S. Haggerty
Si powders synthesized by the laser pyrolysis of silane can be nitrided at 1,200--1,250 C, producing an improved reaction bonded silicon nitride. This RBSN is a potential matrix for composites since it can be formed at temperatures which do not degrade the strengths of commercially available amorphous ceramic fibers. However, the density of the RBSN matrix has been limited to about 75% using the silane-derived Si powder. Combining Si powders and preceramic polymers offers an approach for increasing the density and mechanical properties of the reaction-formed Si{sub 3}N{sub 4} matrix. The incorporation of polysilazanes inhibited the nitridation oat 1,250 C, but samples could be effectively nitrided at 1,400 C. These higher nitriding temperatures are compatible with SCS-6 and other low-oxygen, crystalline SiC fibers which can be used as reinforcements for ceramic composites.
Archive | 1995
William L. Robbins; John S. Haggerty; Dennis D. Rathman; W. D. Goodhue; George B. Kenney; A. Lightfoot; R. Allen Murphy; Wendell E. Rhine; Julia Sigalovsky
Journal of the American Ceramic Society | 1989
John S. Haggerty; A. Lightfoot; J. E. Ritter; Paul A. Gennari; Shanti V. Nair
Chemistry of Materials | 1989
Dietmar Seyferth; William S. Rees; John S. Haggerty; A. Lightfoot
A Collection of Papers Presented at the 14th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 7/8 | 2008
A. Lightfoot; H. L. Ker; John S. Haggerty; J. E. Ritter
Journal of the American Ceramic Society | 2004
Raju S. Parikh; A. Lightfoot; John S. Haggerty; Brian W. Sheldon
Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 16, Issue 5 | 2008
A. Lightfoot; John S. Haggerty; Wendell E. Rhine
Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8 | 1991
A. Lightfoot; L. Ewart; John S. Haggerty; Z. Q. Cai; J. E. Ritter; Shanti V. Nair
Proceedings of the 12th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 7/8 | 2008
A. Lightfoot; William S. Rees; John S. Haggerty
A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 9/10 | 1989
A. Lightfoot; Brian W. Sheldon; J. H. Flint; John S. Haggerty
