Effects of ultraviolet radiation on lattice imperfections in pyrolytic boron nitride.Pyrolitic boron nitride was exposed to 310 equivalent sun hours of ultraviolet radiation in a space environment simulator with the objective to evaluate its applicability as a pigment for a thermal control coating and to identify radiation damage using X-ray diffraction techniques. Lattice parameter comparisons show a definite increase in lattice imperfections in the crystal structure resulting from the ultraviolet irradiation. This sensitivity to radiation damage makes pyrolitic boron nitride unsuitable as a pigment for thermal control coating.
Document ID
19720038738
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Buckley, J. D. (NASA Langley Research Center Hampton, Va., United States)
Cooley, J. A. (Martin Marietta Corp. Denver, Colo., United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1971
Subject Category
Materials, Nonmetallic
Meeting Information
Meeting: Ceramics in severe environments; Sixth University Conference on Ceramic Science, North Carolina State University