Micro-chemical investigation of thick W coating on AISI 420 martensitic steel

S.K. Balijepalli, S. Kaciulis, S. Lionetti, G. Maddaluno, R. Montanari

Research output: Contribution to journalArticle


Tungsten is a favorable material for protecting mechanical components such as thermal shields and divertor parts from plasma damage in nuclear fusion reactors. A thick coating of W has been developed on AISI 420 martensitic stainless steel substrate by means of plasma spray technique. Plasma spraying has been used for its simplicity, the possibility to cover complex and extended surfaces and the relatively low cost. An appropriate interlayer has been optimized to increase the adhesion of W coating on the steel substrate and to provide a soft interface with intermediate thermal expansion coefficient for better thermomechanical compatibility. The present work describes and discusses the results of micro-chemical investigations on coating and interface by X-ray photoelectron spectroscopy and Auger electron spectroscopy.
Original languageEnglish
Pages (from-to)873 - 876
Number of pages4
JournalSurface and Interface Analysis
Issue number10-11
Publication statusPublished - 1 Oct 2014
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Balijepalli, S. K., Kaciulis, S., Lionetti, S., Maddaluno, G., & Montanari, R. (2014). Micro-chemical investigation of thick W coating on AISI 420 martensitic steel. Surface and Interface Analysis, 46(10-11), 873 - 876. https://doi.org/10.1002/sia.5388