relation: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3596/ title: Enhanced hardness of nickel coating reinforced functionalized carbon nanomaterials via an electrodeposition technique creator: Tran, Van Hau creator: Phan, Van Trinh creator: Nguyen, Phuong Hoai Nam creator: Vu, Dinhh Lam creator: Phan, Ngoc Minh creator: Bui, Hung Thang subject: Engineering Physics description: 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. date: 2019-06 type: Article type: PeerReviewed format: application/pdf language: en identifier: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3596/1/2019_Mater%20Res%20Express_Bai%20chung%20voi%20NCS.pdf identifier: Tran, Van Hau and Phan, Van Trinh and Nguyen, Phuong Hoai Nam and Vu, Dinhh Lam and Phan, Ngoc Minh and Bui, Hung Thang (2019) Enhanced hardness of nickel coating reinforced functionalized carbon nanomaterials via an electrodeposition technique. Mater. Res. Express .