%0 Journal Article
%A Tran, Van Hau
%A Phan, Van Trinh
%A Nguyen, Phuong Hoai Nam
%A Vu, Dinhh Lam
%A Phan, Ngoc Minh
%A Bui, Hung Thang
%A Tran Van Hau,
%A Phan Van Trinh,
%A Nguyen Phuong Hoai Nam,
%A Vu Dinh Lam,
%A Phan Ngoc Minh,
%A Bui Hung Thang,
%D 2019
%F SisLab:3596
%J Mater. Res. Express
%T Enhanced hardness of nickel coating reinforced functionalized  carbon nanomaterials via an electrodeposition technique
%U https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3596/
%X In this paper, the nickel (Ni) coatings reinforced carbon nanomaterials including graphene  nanoplatelets (GNPs), multi-walled carbon nanotubes (MWCNTs) andMWCNTs/GNPs hybrid  material prepared by the electrodeposition technique were investigated. GNPs andMWCNTswere  functionalized with carboxylic (–COOH) function groups (GNPs–COOH,MWCNTs–COOH) then  uniformly dispersed into Watts solution for the electrodeposition process. The obtained results  revealed that the microhardness of the Ni coating reinforcedCOOHfunctionalized carbon  nanomaterials is much improved compared to the bare Ni coating and Ni coating containing carbon  nanomaterials without functional groups. The Ni coating containingMWCNTs–COOH/GNPs–  COOHhybrid material showed the highest hardness value of 270HVthat is higher 44.7% compared  to the bare Ni coating. The enhancement was attributed to the uniform dispersion of functionalized  carbon nanomaterials in Ni matrix, the synergistic strengthening effect of theMWCNTsand GNPs,  the grain refinement of Ni matrix and the enhanced load transfer effect from Ni matrix toMWCNTs  and GNPs via atomic bonding during the electrodeposition process.