Deniz GÜLTEKİN, Erhan DURU, Hatem AKBULUT

Ni-B-CeO2 Kompozit Akımsız Kaplamanın Mekanik ve Tribolojik Özelliklerine Isıl İşlem ve Yükün Etkisi

Seryum oksit (CeO2) partikül takviyeli Ni-B kompozit kaplama CeO2 partikülleri içeren bir Ni-B kaplama banyosundan akımsız kaplama yöntemi ile üretilmiştir. Akımsız kaplama banyosunda nikel kaynağı olarak nikel sülfat hekzahidrat ((NiSO4.6H2O), indirgeyici ajan olarak dimetilamin boran ((CH3)2NHBH3), stabilizatör olarak tiyoüre (CH4N2S) ve kompleks oluşturucu olarak da sodyum asetat (CH3COONa) kullanılmıştır. Çalışmanın temel amacı, CeO2 partikül takviyeli kaplamanın yapısal karakterizasyonu ve aşınma deney şartlarının tribolojik özellikleri üzerindeki etkilerini araştırmaktır. Kaplamanın yüzey morfolojisi taramalı elektron mikroskobu (SEM) cihazı, faz yapısı analizi ise X-ışını kırınımı (XRD) cihazı ile yapılmıştır. Nanosertlik ölçümleri nanoindenter cihazı ve aşınma testleri disk üzerinde bilye test cihazı ile gerçekleştirilmiştir. 3D profilometre kullanılarak aşınmış yüzey analizleri yapılmıştır. Deneysel sonuçlar, kaplamanın sertliğinin ısıl işlem ile arttığını, bununla birlikte farklı yüklere bağlı olarak tribolojik davranışının değişim gösterdiği anlaşılmıştır.

Anahtar Kelimeler:

Akımsız kaplama, Ni-B kaplama, Kompozit, Aşınma, Triboloji.

Effect of Heat Treatment and Applied Load on Mechanical and Tribological Properties of Ni-B-CeO2 Composite Electroless Coating

Cerium oxide (CeO2) particle reinforced Ni-B composite coating was produced by electroless coating method from a Ni-B coating bath containing CeO2 particles. In the electroless plating bath, nickel sulfate hexahydrate ((NiSO4.6H2O) was used as nickel source, dimethylamine borane ((CH3)2NHBH3) as reducing agent, thiourea (CH4N2S) as stabilizer and sodium acetate (CH3COONa) as complexing agent. The aim of the study is to investigate the structural characterization of CeO2 particle reinforced coating and the effects of wear test conditions on its tribological properties. The surface morphology of the coating was performed by scanning electron microscope (SEM), and phase structure analysis was performed by X-ray diffraction (XRD). Nanohardness measurements were carried out with a nanoindenter device, and wear tests were done with a ball-on-disk test device. Worn surface analyzes were made using a 3D profilometer. Experimental results showed that the hardness of the coating increased with heat treatment; however, its tribological behavior changed depending on different loads

Keywords:

Electroless coating, Ni-B coating, Composite, Wear, Tribology.,

PDF

___

Barati, Q., & Hadavi, S. M. M. (2020). Electroless Ni-B and composite coatings: A critical review on formation mechanism, properties, applications and future trends. Surfaces and Interfaces, 21(September), 100702. https://doi.org/10.1016/j.surfin.2020.100702
Chen, Z., Ma, Z., Song, J., Wang, L., & Shao, G. (2016). A novel approach for the preparation of Ni–CeO 2 composite cathodes with enhanced electrocatalytic activity. RSC Advances, 6(65), 60806–60814. https://doi.org/10.1039/C6RA14667H
Delaunois, F., & Lienard, P. (2002). Heat treatments for electroless nickel – boron plating on aluminium alloys. Surface & Coatings Technology, 160, 239–248.
Delaunois, F., Petitjean, J. ., Lienard, P., & Jacob-Duliere, M. (2000). Autocatalytic electroless nickel-boron plating on light alloys. Surface and Coatings Technology, 124(2–3), 201–209. https://doi.org/10.1016/S0257-8972(99)00621-0
Dilek, S., Algül, H., Akyol, A., Alp, A., Akbulut, H., & Uysal, M. (2021). Pulse electro co-deposition of submicron-sized TiC reinforced Ni–W coatings: tribological and corrosion properties. Journal of Asian Ceramic Societies, 00(00), 1–13. https://doi.org/10.1080/21870764.2021.1911058
Eraslan, S., & Ürgen, M. (2015). Surface & Coatings Technology Oxidation behavior of electroless Ni – P , Ni – B and Ni – W – B coatings deposited on steel substrates. Surface & Coatings Technology, 265, 46–52. https://doi.org/10.1016/j.surfcoat.2015.01.064
Georgiza, E., Gouda, V., & Vassiliou, P. (2017). Surface & Coatings Technology Production and properties of composite electroless Ni-B-SiC coatings. Surface & Coatings Technology, 325, 46–51. https://doi.org/10.1016/j.surfcoat.2017.06.019
Kasturibai, S., & Kalaignan, G. P. (2014). Characterizations of electrodeposited Ni–CeO2 nanocomposite coatings. Materials Chemistry and Physics, 147(3), 1042–1048. https://doi.org/10.1016/j.matchemphys.2014.06.057
Krishnaveni, K., Sankara Narayanan, T. S. N., & Seshadri, S. K. (2005). Electroless Ni-B coatings: Preparation and evaluation of hardness and wear resistance. Surface and Coatings Technology, 190(1), 115–121. https://doi.org/10.1016/j.surfcoat.2004.01.038
Madah, F., Dehghanian, C., & Amadeh, A. A. (2015). Investigations on the wear mechanisms of electroless Ni–B coating during dry sliding and endurance life of the worn surfaces. Surface and Coatings Technology, 282, 6–15. https://doi.org/10.1016/j.surfcoat.2015.09.003
Mindivan, F., Mindivan, H., & Darcan, C. (2017). Electroless Ni–B Coating of Pure Titanium Surface for Enhanced Tribocorrosion Performance in Artificial Saliva and Antibacterial Activity. Tribology in Industry, 39(2), 270–276. https://doi.org/10.24874/ti.2017.39.02.15
Qu, N. S., Zhu, D., & Chan, K. C. (2006). Fabrication of Ni-CeO2 nanocomposite by electrodeposition. Scripta Materialia, 54(7), 1421–1425. https://doi.org/10.1016/j.scriptamat.2005.10.069
Radu, T., Dunarea, U., Galati, D. J., Vlad, M., Dunarea, U., Galati, D. J., Istrate, G. G., Dunarea, U., & Galati, D. J. (2015). Preparation and characterization of electroless Ni – P – Al2O3 nanocomposite coatings. Digest Journal of Nanomaterials and Biostructures, 10(September), 1055–1065.
Shakoor, R. A., Kahraman, R., Gao, W., & Wang, Y. (2016). Synthesis , Characterization and Applications of Electroless Ni-B Coatings-A review. International Journal of ELECTROCHEMICAL SCIENCE, 11, 2486–2512. http://www.electrochemsci.org/papers/vol11/110302486.pdf
Sudagar, J., Lian, J., & Sha, W. (2013a). Electroless nickel, alloy, composite and nano coatings - A critical review. Journal of Alloys and Compounds, 571, 183–204. https://doi.org/10.1016/j.jallcom.2013.03.107
Vitry, V. Ã., & Delaunois, F. (2015). 7. Nanostructured electroless nickel-boron coatings for wear resistance. In Anti-Abrasive Nanocoatings. Elsevier Ltd. https://doi.org/10.1016/B978-0-85709-211-3.00007-8
Vitry, V., Delaunois, F., & Dumortier, C. (2008). Mechanical properties and scratch test resistance of nickel-boron coated aluminium alloy after heat treatments. Surface and Coatings Technology, 202(14), 3316–3324. https://doi.org/10.1016/j.surfcoat.2007.12.001
Yu, X., Wang, H., Yang, Z., Yin, P., & Xin, X. (2000). XPS and AES investigation of two electroless composite coatings. Applied Surface Science, 158(3), 335–339. https://doi.org/10.1016/S0169-4332(00)00114-8