The effect of boron nitride (h-BN) and silicon carbide (SiC) on the microstructure and wear behavior of ZA40/SiC/h-BN hybrid composites processed by hot pressing


YALÇIN E. D., ÇANAKÇI A., ÇUVALCI H., VAROL T., KARABACAK A. H.

KOVOVE MATERIALY-METALLIC MATERIALS, vol.61, no.4, pp.257-266, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 61 Issue: 4
  • Publication Date: 2023
  • Doi Number: 10.31577/km.2023.4.257
  • Journal Name: KOVOVE MATERIALY-METALLIC MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Central & Eastern European Academic Source (CEEAS), Communication Abstracts, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.257-266
  • Karadeniz Technical University Affiliated: Yes

Abstract

Within the scope of this study, silicon carbide (SiC) and hexagonal boron nitride (h-BN) powders were added as reinforcement into zinc-aluminum (ZA40) matrix powders, and the powder metallurgy (PM) method, which is an advanced technique in material production, was used to fabricate ZA40/SiC/h-BN hybrid composites. In the milling process, the as -received powders were mechanically milled at 400 rpm under a protective argon atmosphere for 2 h at room temperature. The hybrid composite powders were consolidated under 700 MPa pressure at 515 degrees C for 3 h by hot pressing. Weight losses, friction coefficients, and wear rates were calculated by traveling 100 and 200 m at 250 rpm in a ball-on-disc abrasion test setup under 5 and 10 N loads. According to the results, it was seen that SiC and increased h-BN reinforcement changed the mechanical and physical properties of the composites and made significant contributions to the wear resistance and load-carrying capacity.