Coated retaining ring
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United States of America Patent
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Aug 15, 2017
Issued Date -
N/A
app pub date -
Oct 2, 2014
filing date -
Oct 4, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A retaining ring for a polishing system is disclosed. The retaining ring has a process-resistant coating over a portion thereof. The process-resistant coating is a thin, smooth, conformal layer that is resistant to wear and chemical attack. The process-resistant coating is formed by a method that includes vapor deposition from a precursor gas mixture, which may deposit polyparaxyxylene from a gas mixture comprising paracyclophane. Adhesion of the process-resistant coating to the retaining ring may be enhanced by treating the surface of the ring prior to forming the coating. Resistance of the coating to the process may be further enhanced by treating the surface of the coating with an etching or deposition gas to impart texture.
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