Article (Scientific journals)
Optimization of electroless Ni–B-nanodiamond coating corrosion resistance and understanding the nanodiamonds role on pitting corrosion behavior using shot noise theory and molecular dynamic simulation
Yazdani, Sepehr; Prince, Loïc; Vitry, Véronique
2023In Diamond and Related Materials, 134, p. 109793
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Keywords :
Coating; Corrosion; Electrochemical noise; Electroless Ni–B; Molecular dynamics simulation; Nanodiamonds; Chloride ions; Corrosion behaviour; Dynamics simulation; Electroless Ni; Electroless ni–B; Molecular dynamic simulation; Noise theory; Optimisations; Response surfaces methods; Electronic, Optical and Magnetic Materials; Chemistry (all); Mechanical Engineering; Materials Chemistry; Electrical and Electronic Engineering; General Chemistry
Abstract :
[en] This study aimed to optimize the corrosion resistance of the electroless Ni–B-nanodiamond coating using a response surface method (RSM) by changing the electroless bath parameters and understand the role of nanodiamonds on pitting corrosion behavior using linear polarization, and electrochemical noise measurements as well as molecular dynamics simulation. The structure of optimized coating and nanodiamonds (ND) were characterized using FTIR, XPS, GDOES, SEM, and TEM. The stability of nanodiamonds was improved through acid treatment in HNO3 and H2SO4 (volumetric 1:3) solution. The quadratic model for predicting the polarization resistance of coatings based on the designed experiments was proposed with an accuracy of 92.85 %. Calculation of the pit initiation rate based on Weibull probability plots and probability of non-exceedance of pit diameter from shot noise theory reveals that the pit nuclei form at almost the same rate for Ni–B and Ni–B-nanodiamond coating, however, in Ni–B-nanodiamond coating the growth of pits is stopped. The molecular dynamic simulation showed that chloride ions forms weak chemical bonding on the ND surface than nickel due to the lower adsorption energy between the nanodiamonds surface and chloride ions which block localized corrosion attack.
Disciplines :
Materials science & engineering
Author, co-author :
Yazdani, Sepehr ;  Université de Mons - UMONS
Prince, Loïc ;  Université de Mons - UMONS > Faculté Polytechnique > Service de Métallurgie ; Université de Mons - UMONS > Faculté Polytechnique > Service de Science des Matériaux
Vitry, Véronique  ;  Université de Mons - UMONS > Faculté Polytechnique > Service de Métallurgie
Language :
English
Title :
Optimization of electroless Ni–B-nanodiamond coating corrosion resistance and understanding the nanodiamonds role on pitting corrosion behavior using shot noise theory and molecular dynamic simulation
Publication date :
21 February 2023
Journal title :
Diamond and Related Materials
ISSN :
0925-9635
Publisher :
Elsevier Ltd
Volume :
134
Pages :
109793
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
F601 - Métallurgie
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Available on ORBi UMONS :
since 28 March 2023

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