Statistical analysis of microhardness variations in thermal spray coatings

C. K. Lin, C. C. Berndt

研究成果: 雜誌貢獻文章

79 引文 斯高帕斯(Scopus)

摘要

A thermal barrier coating system consisting of a NiCoCrAlY bond coat and cerium-stabilized zirconia ceramic coating was sprayed on to a metallic substrate. Ageing at 400 and 800°C for 100, 500, and 1000 h was performed. Microhardness measurements of as-sprayed and heat-treated samples were used to evaluate microstructural variations throughout the thermally sprayed coating after different ageing conditions. Forty readings were taken at both the bond coat and ceramic coating positions within the thermal barrier coating (TBC) system and adjusted by subtracting the two largest and two smallest readings. Both data sets were statistically analysed to assess whether they belonged to Weibull or Gaussian (or "normal") distributions. This study has established that the homogeneity of coatings, at least as measured by a microhardness test, varies during service and, thus, may influence the lifetime.
原文英語
頁(從 - 到)111-117
頁數7
期刊Journal of Materials Science
30
發行號1
DOIs
出版狀態已發佈 - 一月 1995
對外發佈Yes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Materials Science(all)

指紋 深入研究「Statistical analysis of microhardness variations in thermal spray coatings」主題。共同形成了獨特的指紋。

  • 引用此