Investigation Into Radiation-Induced Compaction of Zerodur(TM)

NASA/TM-108505, Edwards, D.L. and Herren, K. and Hayden, M. and McDonald, K. and Sims, J.A. and Semmel, C.L., Investigation Into Radiation-Induced Compaction of Zerodur(TM), Materials and Processes Laboratory, Science and Engineering Directorate. NASA Marshall Space Flight Center, AL 35812, March 1996, pp. 11, Format(s): PDF 163k

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Zerodur is a low coefficient of thermal expansion glass-ceramic material. This property makes Zerodur an excellent material for high precision optical substrates. Functioning as a high precision optical substrate, a material must be dimensionally stable in the system operating environment. Published data indicate that Zerodur is dimensionally unstable when exposed to large doses of ionizing radiation. The dimensional instability is discussed as an increase in Zerodur density. This increase in density is described as a compaction. Experimental data showing proton-induced compaction of Zerodur is presented. The dependence of compaction on proton dose was determined to be a power law relationship

Keywords:	radiation-induced compation, zerodur(tm), electron, proton
CASI Document ID Number:	96N23147
Subjects:	Chemistry and Materials: Non-Metallic Materials: Ceramics
ID Code:	319
Deposited On:	28 June 2002