Effect of TMAB concentration on structural, mechanical and corrosion properties of electrodeposited Ni–B alloys

KARAHAN İ. H., Aminifazl A., Golden T. D.

Journal of the Indian Chemical Society, vol.99, no.6, 2022 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 99 Issue: 6
  • Publication Date: 2022
  • Doi Number: 10.1016/j.jics.2022.100467
  • Journal Name: Journal of the Indian Chemical Society
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Analytical Abstracts, Chemical Abstracts Core, EMBASE
  • Keywords: Alloy, Corrosion, Electrodeposition, Ni-B, TMAB
  • Hatay Mustafa Kemal University Affiliated: Yes

Abstract

The influence of trimethylamine borane (TMAB) concentration as a boron (B) source on the structural and corrosive properties of Ni–B alloy coatings produced by electrodeposition was investigated. The crystal structure of the Ni–B coatings is influenced by the B content in the coating, having a slight (220) preferred orientation. The B content in the coating increased from 16 to 34 at.% with the corresponding increase in the concentration of TMAB from 1 to 20 g/L, while interestingly retaining a crystal structure. The hardness of the coatings increased with increasing B content owing to the formation of smaller crystallites. An increase in B content in the alloy coatings, led to a shift in the Ecorr values to more anodic potentials, indicating increase corrosion protection for the Ni–B coatings. This study achieved to reach 34 at.% B content in Ni–B alloy coatings produced by electrodeposition while preventing amorphization of the coating layer.