Effect of substrate hardness on the deformation behavior of subsequently incident particles in cold spraying

Shuo Yin, Xiao Fang Wang, W. Y. Li, Hong En Jie

Research output: Contribution to journalArticlepeer-review

84 Scopus citations

Abstract

A systematic finite element analysis (FEA) on the subsequently incident particles which refer to the particles depositing after the formation of the first layer coating is conducted in this study to clarify the bonding mechanism inside the cold sprayed coating. A simplified particle impact model is proposed and the simulated results based on this model demonstrate that substrate hardness exerts some effects on the deformation behavior of the subsequently incident particles. Hard substrate makes these particles deform intensively but using soft substrate enables them to achieve a slight deformation. At the same time, it is also found that substrate hardness plays its best role only when the formed coating is thin, as the development of the coating, the particle deformation behavior becomes more and more insensitive to the substrate hardness. The multi-particle impact simulation based on Eulerian method is also performed and reaches the same conclusion, confirming the accuracy of the simplified model. Besides, it is also found that when the velocity is increased to a hypervelocity, excessive deformation occurs in the formed coatings due to the impact of the subsequently incident particles.

Original languageEnglish
Pages (from-to)7560-7565
Number of pages6
JournalApplied Surface Science
Volume257
Issue number17
DOIs
StatePublished - 15 Jun 2011

Keywords

  • Cold spraying (CS)
  • Eulerian method
  • Multi-particle
  • Numerical simulation
  • Subsequently incident particle
  • Substrate hardness

Fingerprint

Dive into the research topics of 'Effect of substrate hardness on the deformation behavior of subsequently incident particles in cold spraying'. Together they form a unique fingerprint.

Cite this