NASA NTRS · 19850000404
Coating a Sphere With Evaporated Metal
Abstract
In vacuum coating apparatus, metal evaporated onto sphere from small source located some distance away. Sphere held in path of metal vapor while rotated about axis that rocks back and forth. One tilting motion particularly easy to produce is sinusoidal rocking with frequency much lower than rotational frequency. Apparatus developed for coating single-crystal sapphire spheres with niobium.
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Strayer, D. M., Jackson, H. W., Gatewood, J. R.. 1986-01-01. Coating a Sphere With Evaporated Metal. https://ntrs.nasa.gov/citations/19850000404
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