Article (Scientific journals)
RSM models approach for optimization of the mechanical properties of electroless Ni-B-nanodiamond coating: An experimental and molecular dynamic simulation study
Yazdani, Sepehr; Vitry, Veronique
2023In Surface and Coatings Technology, 452, p. 129133
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Keywords :
Composite coating; Electroless Ni-B; Molecular dynamics simulations; Nanodiamonds; Raman spectra; Scratch resistance; Borohydrides; Composites coating; Dynamics simulation; Electroless Ni; Electroless ni-B; Molecular dynamic simulation; Optimisations; Phases transformation; Response surfaces methods; Chemistry (all); Condensed Matter Physics; Surfaces and Interfaces; Surfaces, Coatings and Films; Materials Chemistry; General Chemistry
Abstract :
[en] This report explores the effects of electroless Ni-B-nanodiamond plating bath parameters for optimization of the hardness and deposition rate based on response surface method (RSM). Quadratic models were developed and found to be mathematically appropriate for the optimization. The nanodiamonds (ND) and optimized coating were characterized using XPS, DLS, FIB-SEM, GDOES, microhardness, and nanoindentation. The results of the molecular dynamic simulation show low adsorption energy of borohydride on nanodiamonds surface is not favourable for borohydride dehydrogenation, therefore the boron content of the coating decreases when ND are added. Raman spectroscopy, SEM, and EDS analysis carried out on different zones of the surface after scratch test show nanodiamonds undergo graphitization and micro-cracking which block crack propagation at lower load. In addition, ND improves formation of the tribolayer at higher loads. The Raman spectroscopy results after indentation tests show the possibility of SP3 to SP2 phase transformation for nanodiamonds. The molecular dynamic simulation results confirm that phase transformation through monitoring the changes in nanodiamonds interatomic potential and interatomic distances. It is believed that the volume expansion caused by this phase transformation increases the toughness of coating.
Research center :
CRPM - Physique des matériaux
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Yazdani, Sepehr ;  Université de Mons - UMONS
Vitry, Veronique;  Metallurgy Department, Faculty of Engineering, University of Mons, Mons, Belgium
Language :
English
Title :
RSM models approach for optimization of the mechanical properties of electroless Ni-B-nanodiamond coating: An experimental and molecular dynamic simulation study
Alternative titles :
[en] electroless Ni-B-nanodiamond coating
Original title :
[en] RSM models approach for optimization of the mechanical properties of electroless Ni-B-nanodiamond coating: An experimental and molecular dynamic simulation study
Publication date :
15 January 2023
Journal title :
Surface and Coatings Technology
ISSN :
0257-8972
eISSN :
1879-3347
Publisher :
Elsevier B.V.
Special issue title :
non
Volume :
452
Pages :
129133
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
Materials Science
Research institute :
Research Institute for Materials Science and Engineering
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique
Funding text :
One of the authors (Sepehr Yazdani) wishes to thank Belgian National Fund for Scientific Research (FNRS) for the financial support in the framework of the Aspirant project. The authors also want to thank to Mr. Yoann Paint at Belgium Materia Nova Research Centre for the SEM analysis, Mr. Patrick Chapon at HORIBA France SAS for GDOES analysis, and Mr. Vedi Dupont at Belgian Ceramic Research Centre for FIB analysis.One of the authors (Sepehr Yazdani) wishes to thank Belgian National Fund for Scientific Research (FNRS) for the financial support in the framework of the Aspirant project. The authors also want to thank to Mr. Yoann Paint at Belgium Materia Nova Research Centre for the SEM analysis, Mr. Patrick Chapon at HORIBA France SAS for GDOES analysis, and Mr. Vedi Dupont at Belgian Ceramic Research Centre for FIB analysis.
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