Investigation of high emissivity coatings prepared by plasma spraying

Can Wang*, Quansheng Wang, Xianjin Ning, Zhong Du, Yanbo Liu, Ping Gu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this study, the feedstock powder for plasma spray was prepared by spray drying and post-sintering at 1360 °C using raw metal oxides. The high emissivity coating was deposited by air plasma spraying (APS). The microstructure, phase structure, flow ability and bulk density of the plasma sprayed powder were characterized. The microstructure, bond strength and infrared emissivity of the high emissivity coating were also analyzed in this paper. The results reveal that the feedstock powder present good flow ability of 42.36 (sp50g) with the bulk density of 1.94 gpml and is suitable for plasma spraying. A dense coating with the bond strength of 39.6MPa and the porosity less than 5 percent was prepared successfully. The normal emissivity of the coating in all waveband is 0.88 at 300°C and 0.87 at 600°C.

Original languageEnglish
Title of host publicationApplications of Engineering Materials
Pages2283-2287
Number of pages5
DOIs
Publication statusPublished - 2011
Event2011 International Conference on Advanced Engineering Materials and Technology, AEMT 2011 - Sanya, China
Duration: 29 Jul 201131 Jul 2011

Publication series

NameAdvanced Materials Research
Volume287-290
ISSN (Print)1022-6680

Conference

Conference2011 International Conference on Advanced Engineering Materials and Technology, AEMT 2011
Country/TerritoryChina
CitySanya
Period29/07/1131/07/11

Keywords

  • Coatings
  • High emissivity
  • Plasma spraying

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