Mechanical metallization of alumina substrate through shot impact treatment

Sergey V. Komarov, Sergey E. Romankov

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

The present study examines the potentialities of a novel surface treatment process for the metallization of ceramics. The process combines the principles of ball milling and shot peening using the energy of ultrasonic vibrations. Experiments were performed by using alumina and powdered nickel as a ceramic substrate and metallizing agent, respectively. The main emphasis was placed on characterizing the deposited films and elucidating their formation mechanisms. The results showed that 3-min impact treatment at ambient temperature and pressure leads to the formation of 2-4 μm thin, dense, and highly adherent films of nanostructured Ni on the surface of alumina substrate. SEM and TEM observations revealed a very tight contact between the deposited films and substrate suggesting the shot-impact induced plastic flow in the Ni film. It is assumed that the van der Waals interaction is the main origin of the high adhesion strength observed.

Original languageEnglish
Pages (from-to)391-399
Number of pages9
JournalJournal of the European Ceramic Society
Volume34
Issue number2
DOIs
Publication statusPublished - 2014 Feb 1
Externally publishedYes

Keywords

  • Alumina substrate
  • Film characterization
  • Nanostructured metal film
  • Shot impact
  • Ultrasonic vibrations

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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