Article
Materials Science, Multidisciplinary
Vinod Babu Chintada, Thirumala Rao Gurugubelli, Ravindranadh Koutavarapu
Summary: This study investigated the development and properties of electroless nickel silicon (Ni-P-SiC) coatings on steel substrates with different surfactants. The presence of a cationic surfactant significantly influenced the characteristics of the coatings, resulting in the homogeneous distribution of SiC nanoparticles in the Ni alloy. The coating developed from the cationic surfactant bath exhibited the highest microhardness, corrosion resistance, deposition rate, and smooth surface.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Sudhakar Uppada, Ramji Koona, Vinod Babu Chintada, Ravindranadh Koutavarapu
Summary: In order to improve the surface properties of mild steel, such as microhardness and resistance to corrosion, Al2O3 and SiC nanoparticle-reinforced multilayer Ni-P coatings were fabricated using an electroless surface coating technique. The experimental results showed that a bilayer coating with Ni-P-SiC as the external layer provided the highest microhardness, while the Ni-P-Al2O3 outer layered duplex coating offers the maximum resistance to corrosion.
Article
Physics, Applied
Guanlin Zhao, Shushuai Liu, Dongting Wu, Yong Zou
Summary: By annealing, the microstructure and corrosion resistance of amorphous Ni-W-P coatings can be altered through an increase in cluster size and microscopic particle quantity.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2022)
Article
Materials Science, Multidisciplinary
Donya Ahmadkhaniha, Lucia Lattanzi, Fabio Bonora, Annalisa Fortini, Mattia Merlin, Caterina Zanella
Summary: The study aimed to assess the influence of SiC particles and heat treatment on the wear behaviour of Ni-P coatings in contact with 100Cr6 steel. It was found that the addition of SiC particles increased the friction coefficient and wear rate, and when combined with heat treatment, higher hardness was achieved.
Article
Materials Science, Multidisciplinary
Weizhi Zhang, Dandan Liao, Dezhi Tang, Enhou Han, Jun Wang
Summary: The electroless plating and electrodeposition process was used to prepare a Ni-Cu-P bilayer composite film with hydrophobic properties on the Ni-P film. The introduction of Cu inhibits the growth of cellular structures, increases nucleation points, and improves the microstructure of the Ni-Cu-P films. The Ni-P/Ni-Cu-P bilayer composite film has a pinecone-like convex structure, reduces surface energy, exhibits hydrophobicity, and effectively resists external impurities and fouling, improving corrosion resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Multidisciplinary Sciences
Palash Biswas, Suman Kalyan Das, Prasanta Sahoo
Summary: Duplex Ni-P/Ni-Mo-P coating systems were developed using the electroless dual bath technique. The effect of heat treatment on the microstructural characteristics, microhardness, friction, wear, and corrosion behavior of the coatings was investigated. Heat treatment improved the hardness and corrosion performance of the coatings, but prolonged high temperature treatment resulted in surface cracks and plastic deformation.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Materials Science, Coatings & Films
Peter Renner, Hong Liang
Summary: This research analyzes the corrosion performance of coatings developed by flash heating and finds that the gas flow rate and the combination of composition and current have significant effects on corrosion performance.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Coatings & Films
Zhechen Zhang, Chenbo Ma, Qinqwen Dai, Wei Huang, Xiaolei Wang
Summary: Inspired by the low friction of self-mated SiC in water, a two-stage technique is proposed to deposit Ni-P-SiC coating with a high particle content to achieve low friction against SiC in water. The process involves electrophoretic deposition of SiC particles layer on mild steel substrate followed by electroless plating of Ni-P coating. The effects of SiC content on surface appearance, phase structure, and cohesive strength were studied, with great attention paid to the friction behavior of the coatings in water. Experimental results demonstrate that the two-stage technique effectively enhances the implanted SiC particle content compared to traditional electroless plating, and the lowest friction coefficient of 0.015 can be achieved for the Ni-P-SiC coatings with the highest SiC particle content. The major surface degradation mode involves abrasive wear during running-in, followed by dominance of tribochemical wear at the low friction stage.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Hui Dong, Peng-Fei Guo, Yan Han, Ru-Xue Bai, Zi-Chen Yang, San-Qi Zhang
Summary: Heat treatment was conducted on high speed laser-cladded Ni/316L coating to enhance corrosion resistance. Coatings were heat treated at temperatures of 650 ℃, 700 ℃, 750 ℃, and 800 ℃. The results revealed that coating porosity was independent of annealing temperature and the coating's chemical composition remained intact after heat treatment. Grain size decreased initially and then increased with increasing heat treatment temperature. The content of equiaxed grains and Fe19Ni precipitation phase increased with temperature. Precipitation led to higher corrosion resistance in heat-treated coatings compared to as-cladded coatings. The corrosion resistance of heat-treated coatings increased initially and then decreased due to the combined effect of precipitation and grain morphology. Therefore, corrosion resistance can be improved by annealing, but suitable parameters need to be determined.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Multidisciplinary
Danial Davoodi, Amir Hossein Emami, Sayed Mahmoud Monir Vaghefi, Mahdi Omidi, Hamid Reza Bakhsheshi-Rad
Summary: This study investigated the effect of adding colloidal copper nanoparticles to the electroless Ni-P bath on the corrosion behavior and microstructure of electroless coatings. The results showed that the addition of Cu nanoparticles altered the morphology of the coatings and increased the corrosion resistance with the increase in thickness. Under certain heat treatment conditions, the Ni-Cu-P coating exhibited better corrosion resistance. However, the corrosion resistance of the coatings decreased when the thickness exceeded a certain value.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2022)
Article
Electrochemistry
Joanna Wojewoda-Budka, Anna Wierzbicka-Miernik, Izabella Kwiecien, Fabrizio Valenza, Anna Korneva, Marta Janusz-Skuza, Katarzyna Stan-Glowinska, Jan Guspiel, Monika Bugajska
Summary: This study focuses on the thermal stability of electroless plated nickel coatings and their reaction with solder materials. The addition of rhenium inhibits the formation of undesirable intermetallic phases and improves the corrosion resistance of the coatings.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Osama Fayyaz, A. Bahgat Radwan, Mostafa H. Sliem, Aboubakr Moustafa Abdullah, Anwarul Hasan, R. A. Shakoor
Summary: This study successfully synthesized novel Ni-P-ZrC nanocomposite coatings, which significantly improved the mechanical properties and corrosion resistance of Ni-P coatings due to the incorporation of Zirconium carbide nanoparticles (ZCNPs).
Article
Materials Science, Coatings & Films
Peng Zhang, Yuhui Zhao, Jiale Huang, Jie Li, Lin Cao, Jianan Liu, Guofeng Han, Wenbo Du, Lihua Chen, Linlin Xiao, Qiwei Wang, Yingfei Yang, Sheng Zhu, Wei Li
Summary: Ni-W-SiC composite coatings with mixed nano- and micro-sized SiC particles were prepared using pulsed electrodeposition. The effects of the mixed ratios of nano- to micro-sized SiC on the microstructure, microhardness, wear and corrosion resistances of the coatings were studied. The results showed that nano-sized SiC can be incorporated into the coatings without agglomeration when carried by micro-sized SiC during the deposition process. The composite coatings with a mixture of nano- and micro-sized SiC exhibited improved wear resistance, while the coatings with the highest total SiC content showed the best corrosion resistance due to the blockage of Faradaic current by inert SiC particles. The interactions between nano- and micro-sized SiC during the deposition process were also discussed.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Zhifei Zhang, Yi He, Yang Bai, Ruxia Song, Yahui He, Bo Liu, Hongjie Li, Jianxin Shangguan
Summary: The effects of iron on the structure, morphology, and corrosion resistance of Ni-P coatings were studied. The results show that iron can improve the flatness and crystallite size of Ni-P coatings, as well as influence their corrosion behavior.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Materials Science, Ceramics
Kaiyue Lu, Shujuan Dong, Yan Huang, Gui Li, Jianing Jiang, Longhui Deng, Xueqiang Cao
Summary: Multi-layered thermal/environmental barrier coatings (T/EBCs) on SiC fibre-reinforced SiC ceramic matrix composites (SiCf/SiC-CMCs) were post heat treated at 1200 or 1350°C for 5 h. The thermal cycling and water-vapour/oxygen corrosion were studied after annealing at different temperatures. The results showed that the thermal cycling lifetime of the 1350°C-annealed T/EBCs was shorter than the 1200°C-annealed and as-sprayed T/EBCs, while the 1350°C-annealed T/EBCs exhibited outstanding resistance to steam corrosion.
CERAMICS INTERNATIONAL
(2023)