New Coating Technique for Al-B4C Composite Coatings by Mechanical Milling and Composite Coating

ÇANAKÇI A., VAROL T., ERDEMİR F., ÖZKAYA S.

POWDER METALLURGY AND METAL CERAMICS, vol.53, no.11-12, pp.672-679, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 53 Issue: 11-12
  • Publication Date: 2015
  • Doi Number: 10.1007/s11106-015-9662-2
  • Journal Name: POWDER METALLURGY AND METAL CERAMICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.672-679
  • Keywords: coating, composite, microstructure, milling, B4C REINFORCEMENT, PARTICLE-SIZE, CARBON-STEEL, AL, FABRICATION, EVOLUTION, CR
  • Karadeniz Technical University Affiliated: Yes

Abstract

Mechanical milling (MM) process as a novel technique for producing Al-B4C composite coatings on the surface of low carbon steel was investigated. The coating thickness, morphology, and cross-section microstructure of the composite coatings were analyzed with scanning electron microscopy (SEM). Also, Vickers microhardness and surface roughness of the coating layer were measured. It was found that a dense Al-B4C composite coating could deposit on the surface, particularly, if longer milling periods. The microstructure of Al-B4C composite coatings revealed that the distribution of B4C particles in the Al matrix was homogenous. Increasing milling time from 6 to 30 h resulted in increase of the microhardness values from 220 to 280 HV for the pre-interface layer (5 mu m).