Dimensional stability of electroless nickel coatings

Douglas L. Hibbard

doi:10.1117/12.22875

1 November 1990 Dimensional stability of electroless nickel coatings

Douglas L. Hibbard

Proceedings Volume 1335, Dimensional Stability; (1990) https://doi.org/10.1117/12.22875
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

Dimensional instability in electroless nickel (EN) coatings is the result of two effects related to thermal expansion mismatch between the substrate and the EN coating: a continuous reversible contribution from the coefficient of thermal expansion (CTE) mismatch between the EN coating and the substrate and one or more one-time irreversible thermally-induced volume contractions of the EN. This paper presents a description of both mismatch components how each effects the ultimate stability of an EN-plated optic and which processing parameters can lead to improved stability.

Citation Download Citation

Douglas L. Hibbard "Dimensional stability of electroless nickel coatings", Proc. SPIE 1335, Dimensional Stability, (1 November 1990); https://doi.org/10.1117/12.22875

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