Effect of thermal aging on properties and microstructure of AlSi-hBN coating

Jianming Liu, Yueguang Yu*, Tong Liu, Suyuan Yang, Xingwang Cheng

*Corresponding author for this work

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

Abstract

A commercial abradable coating AlSi-hBN was fabricated by atmospheric plasma spraying and was thermal aged at 450°C in the atmospheric environment for 1000h. Thermal aging effect on coating abradablity, hardness, bond strength and microstructure were evaluated. It was found that coating abradability increased obviously after 2h thermal aging and slightly decreased for extended thermal aging time. A sharp decrease in both coating hardness and bond strength were found after 2h thermal aging and a slow increase occurred with the extended aging time. Relationships between coating properties and microstructure were studied. Decomposition of organic binder and sintering of AlSi matrix metal generated by thermal aging were found to be reasons for coating properties changes.

Original languageEnglish
Title of host publicationInternational Thermal Spray Conference and Exposition, ITSC 2017
PublisherASM International
Pages1000-1003
Number of pages4
ISBN (Electronic)9781510858220
Publication statusPublished - 2017
EventInternational Thermal Spray Conference and Exposition, ITSC 2017 - Dusseldorf, Germany
Duration: 7 Jun 20179 Jun 2017

Publication series

NameProceedings of the International Thermal Spray Conference
Volume2

Conference

ConferenceInternational Thermal Spray Conference and Exposition, ITSC 2017
Country/TerritoryGermany
CityDusseldorf
Period7/06/179/06/17

Keywords

  • Abradable coating
  • AlSi-hBN
  • Microstructure
  • Thermal aging

Fingerprint

Dive into the research topics of 'Effect of thermal aging on properties and microstructure of AlSi-hBN coating'. Together they form a unique fingerprint.

Cite this

Liu, J., Yu, Y., Liu, T., Yang, S., & Cheng, X. (2017). Effect of thermal aging on properties and microstructure of AlSi-hBN coating. In International Thermal Spray Conference and Exposition, ITSC 2017 (pp. 1000-1003). (Proceedings of the International Thermal Spray Conference; Vol. 2). ASM International.