Satyaprasad, A. ; Nema, S. K. ; Sinha, N. K. ; Baldev Raj, (2010) Deposition of thick and adherent Teflon-like coating on industrial scale stainless steel shell using pulsed dc and RF PECVD Applied Surface Science, 256 (13). pp. 4334-4338. ISSN 0169-4332
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S01694...
Related URL: http://dx.doi.org/10.1016/j.apsusc.2010.02.027
Abstract
A unique combination of pulsed dc and radio frequency (RF) discharge deposition was used to deposit thick (~5 μm) and adherent (2-4 MPa) Teflon-like coatings on a stainless steel (SS) shell of 2 m diameter size, through plasma enhanced chemical vapor deposition (PECVD). The details of deposition on such a big industrial scale component are reported for the first time. In this method, highly adherent thin interface layers were grown on SS shell that was electrically grounded, using pulsed dc discharge, followed by RF discharge deposition to build up the required coating thickness. The fluorocarbon precursor molecules, required for the deposition of Teflon-like coating, are generated indigenously by pyrolyzing the Teflon powder. The deposited coating was studied for its chemical bond state, surface roughness (Ra), morphology, thickness, and adhesive strength. These studies were carried out by using XPS, AFM, SEM, etc. The adhesive strength of the coating was measured by pin-pull test as per ASTM D4541 standard test. The coatings deposited with pulsed dc discharge were observed to have higher adhesive strength when compared with those deposited with RF discharge.
Item Type: | Article |
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Source: | Copyright of this article belongs to Elsevier Science. |
Keywords: | Teflon-like Coating; Plasma; PECVD; Pulsed dc; RF; Box Coater |
ID Code: | 40368 |
Deposited On: | 24 May 2011 04:26 |
Last Modified: | 02 Feb 2023 08:50 |
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