TRIBOLOGICAL PROPERTIES AND MICROSTRUCTURE OF ELECTROLESS NICKEL COATINGS REINFORCED WITH NANOPARTICLES
DOI:
https://doi.org/10.17770/etr2019vol3.4182Keywords:
titanium nitride, electroless nickel coating, wear resistance, microhardness, lower bainiteAbstract
Composite nickel coatings composed of Ni; Ni + TiN are studied. The method for elecrtroless nickel deposition EFFTOM-NICKEL with TiN nanosized strengthening particles (50nm) is applied. The coatings are deposited on austempered ductile iron (ADI) samples. The composition of cast iron samples is: Fe-3,63C-2,59Si-0,30Mn-0,010S-0,034P-0,53Cu wt. %. The samples are put under isothermal hardening at 900oС for an hour and isothermal retention at 290 oС for 2 hours with the aim to receive a lower bainite structure. The wear resistance experimental testing is carried out using Taber-Abraser test machine by disk to disk classical method. The microstructure observations of the coatings and padding are performed using an optical microscope GX41 OLIMPUS also the coatings’ microhardness by Knoop Method is examined. The wear resistance, microstructure, thickness and microhardness of the as plated and thermally processed at 290oС for 6 hours coatings are defined.Downloads
References
F. Mindivan, H. Mindivan, C. Darcan, Electroless Ni–B Coating of Pure Titanium Surface for Enhanced Tribocorrosion Performance in Artificial Saliva and Antibacterial Activity, Tribology in Industry, Vol. 39, No. 2, pp. 270-276, 2017, doi: 10.24874/ti.2017.39.02.15
W. Metzger, Th. Florian, The Deposition of Dispersion Hardened Coatings by Means of Electroless Nickel, The International Journal of Surface Engineering and Coatings, Vol. 54, Issue 1, pp. 174-177, 1976.
F.N. Hubbell, Chemically Deposited Composites—A New Generation of Electroless Coatings, The International Journal of Surface Engineering and Coatings, Vol. 56, Issue 1, pp. 65-69, 1978.
W.F. Sharp, Properties and applications of composite diamond coatings, Wear, Vol. 32, Issue 3, pp. 315-325,1975.
J. Balaraju, S. Narayanan, S. Seshadri, Electroless Ni–P composite coatings, Journal of Applied Electrochemistry, Vol. 33, Issue 9, pp 807–816, 2003.
A. Grosjeana, M. Rezrazia, J. Takadoumb, P. Berçota, Hardness, friction and wear characteristics of nickel-SiC electroless composite deposits, Surface and Coatings Technology, Vol. 137, Issue 1, pp. 92-96, 2001.
Z Abdel Hamid, M.T. Abou Elkhair, Development of electroless nickel–phosphorous composite deposits for wear resistance of 6061 aluminum alloy, Materials Letters, Vol. 57, Issue 3, pp. 720-726, 2002.
Cheng-Hsun Hsu, Jung-Kai Lu, Rung-Jie Tsai, Characteristics of duplex surface coatings on austempered ductile iron substrates, Surface and Coatings Technology, Vol. 200, Issues 20-21, pp. 5725-5732, 2006.
Cheng-Hsun Hsu, Jung-Kai Lu, Rung-Jie Tsai, Effects of low-temperature coating process on mechanical behaviors of ADI, Materials Science and Engineering, A, Vol. 398, Issues 1-2, pp. 282-290, 2005.
G. Gavrilov, C. Nicolov, Electroless Nickel and Composite Coatings, Tehnika, Sofia, 1985.
Z. Karaguiozova, J. Kaleicheva, V. Mishev, G. Nikolcheva, Enhancement in the tribological and mechanical properties of electroless Nickel-nanodiamond coatings plated on iron, Tribology in Industry, vol. 39, No 4, pp. 444-451, 2017, doi: 10.24874/ti.2017.39.04.03
A. Mukhopadhyay, S. Duari, T.K. Barman, P. Sahoo, Evaluation of Tribological Properties and Optimization of Electroless Ni-P-W Coating under Dry Condition using Grey Fuzzy Analysis, Tribology in Industry,Vol. 39, No. 1, pp. 50-62, 2017, doi: 10.24874/ti.2017.39.01.06
T. Simeonova, M. Tongov, G. Avdeev, Microstructure and properties of NiCrBSiC Overlay Coatings Deposited By The Plasma Scanning Process, WIT Transactions on the Built Environment 137, pp. 553-564, DOI 10.2495/HPSM140511
