Authors: K Chien TW Coyle
Publish Date: 2007/11/22
Volume: 16, Issue: 5-6, Pages: 886-892
Abstract
In this article we proposed a rapid and continuous process for the production of nanoporous coatings for functional applications Experiments following two statistical designs were implemented to screen and investigate the spraying parameters’ effects on coating crystallinity and porosity in order to gain a better understanding The spraying standoff distance solution flow rate and power were identified as having significant effects on coating porosity and crystallinity The result yielded a peculiar microstructure comprised of interpenetrating pores and layered structures with embedded pores A deposition mechanism was postulated to explain this microstructure Ethanol gas sensors that are constructed from the coatings had comparable sensitivities to those reported in the literature for thickfilm coatings and had a maximum sensitivity near 200 °CThis article is an invited paper selected from presentations at the 2007 International Thermal Spray Conference and has been expanded from the original presentation It is simultaneously published in Global Coating Solutions Proceedings of the 2007 International Thermal Spray Conference Beijing China May 1416 2007 Basil R Marple Margaret M Hyland YukChiu Lau ChangJiu Li Rogerio S Lima and Ghislain Montavon Ed ASM International Materials Park OH 2007
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