Article
Energy & Fuels
Ivan Pedroarena, Lucia Grande, Jonathan J. Torrez-Herera, Sophia A. Korili, Antonio Gil
Summary: This research investigates the interactions between alumina-supported nickel catalysts and other metals, and their impact on the catalyst's performance. The reduction capacity of oxide phases has been analyzed, revealing that Pd facilitates the formation of easily reducible NiO species. Furthermore, the impregnation order of Mo and Pd does not significantly affect the catalysts' properties.
Article
Materials Science, Multidisciplinary
Monty Kumar, Mukul Anand, Kailash Jha, Amitava Mandal
Summary: In this study, TIG cladding was performed on Ti-6Al-4V substrate using Taguchi L9 orthogonal array method. The effects of current, scanning speed, and wt% of rare earth on clad layer thickness, microhardness, and wear rate were investigated. The optimization and analysis were conducted using the desirability function analysis technique and ANOVA. Linear regression models were developed, and a high accuracy was achieved. The coating prepared under the optimal condition exhibited a desirable structure and performance.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Analytical
Ya Tian, Liwen Ma, Xiaoli Xi, Zuoren Nie
Summary: In this study, Co-Mo-Ni-W alloy coatings were co-electrodeposited on a copper metallic substrate using electrolytes containing different systems of complexing agents. The addition of different complexing agents resulted in changes in the deposition potential and hardness of the coatings, as well as the Mo and W content in the coatings.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Mechanical
Sandeep Bansal, Jonty Mago, Dheeraj Gupta, Vivek Jain
Summary: This study aimed to develop cavitation erosion-resistant clads on stainless steel using the microwave cladding technique, and compared the performance of composite cladding layer in cavitation erosion testing. The results showed that the composite cladding performed significantly better than the stainless steel substrate in cavitation erosion behavior.
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2021)
Article
Metallurgy & Metallurgical Engineering
M. Najafi, M. Moshkbar Bakhshayesh, A. Farzadi
Summary: A three-layer Ni-Cr-Mo clad was deposited on carbon steels using the GMAW process. The Fe content in the clad was below 2 wt%, and the secondary phase distribution and content were insignificant. Corrosion resistance was not affected when the Fe content was restricted to below 2%.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2021)
Article
Chemistry, Physical
Xiaojun Zhao, Qi Zhong, Pengyuan Zhai, Pengyu Fan, Ruiling Wu, Jianxiao Fang, Yuxiang Xiao, Yuxiang Jiang, Sainan Liu, Wei Li
Summary: In order to improve the wear resistance of high-strength and high-conductivity Cu-Cr-Zr alloys in high-speed and heavy load friction environments, coatings including Ni-Cu, Ni-Cu-10(W,Si), Ni-Cu-10(Mo,W,Si), and Ni-Cu-15(Mo,W,Si) were prepared using coaxial powder-feeding laser cladding technology. The microstructure and wear performance of the coatings were investigated. The presence of silicides in the coatings played an important role in grain refinement and the transformation of wear mechanism from adhesive wear to abrasive wear.
Article
Materials Science, Multidisciplinary
Andrey Bazlov, Ilia Strochko, Evgeny Ubyivovk, Mark Parkhomenko, Daria Magomedova, Erzhena Zanaeva
Summary: This study focuses on the effect of replacing molybdenum with vanadium in rapidly quenched quasi-high-entropy alloys. The paper analyzes the effect of different boron content levels on structure formation, characteristic temperatures, and mechanical properties. X-ray diffraction and scanning electron microscopy methods were used to establish structural dependencies, and it is suggested that the addition of vanadium leads to the formation of vanadium nitrides in the structure and an increase in thermal stability.
Article
Materials Science, Coatings & Films
Duoli Wu, Yi Li, Ziyi Yuan, Liao Xiang, Xinlong Wei, Chao Zhang
Summary: The study found that increasing molybdenum content improves the high-temperature corrosion resistance of Ni-clad Al coatings, forming a continuous layer of Ni and Al oxides on the surface while concentrating KCl in the molybdenum region.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
V. Z. Kublii, S. Utkin, A. A. Bondar, M. Remez
Summary: The lattice constants of alloys in the Mo-Ni-B system increase with Mo content, and the 13Mo-81Ni-6B (at.%) hypoeutectic alloy exhibits low plasticity but high heat resistance up to 600 degrees C within the temperature range of 20-700 degrees C.
Article
Materials Science, Multidisciplinary
Rong Wang, Hailing Yan, Jian Lu, Xinmeng Sui, Deqiang Wei, Kai Wang, Jing Zhang, Huan Zhao, Yujian Dong
Summary: This study successfully fabricated a high-performance W-Ni composite coating on medium carbon steel using scanning electron beam alloying. The microstructure and mechanical properties of the coating were found to be influenced by the process parameters.
Article
Chemistry, Multidisciplinary
Lei Zhang, Yi Fang, Zhao Du, Dandan Bi, Zhonglu Guo, Zhenya Liu, Yang Huang, Jing Lin, Chengchun Tang
Summary: In this study, a series of Ni-Pd/p-BN catalysts were prepared for the hydrogenation of phenol to cyclohexanol. The optimal catalyst showed significantly improved conversion of phenol and high selectivity towards cyclohexanol. Additionally, the Ni-Pd/p-BN catalyst exhibited superior reusability and recyclability, making it a promising material for industrial catalysis applications.
Article
Chemistry, Physical
Hector de Paz Carmona, Zdenek Tisler, Eliska Svobodova, Uliana Akhmetzyanova
Summary: This paper investigates the activity and stability of six sulfur-free Al2O3-supported and phosphorus-modified Co-Mo and Ni-Mo carbide catalysts during hydrotreating. The results show that adding 0.5% of phosphorus increases catalyst acidity and reducibility, leading to improved catalyst activity and stability during co-processing.
Article
Chemistry, Physical
Yan Hou, Jianjiao Xin, Carlos J. Gomez-Garcia, Boxin Xiao, Haijun Pang, Huiyuan Ma, Xinming Wang, Lichao Tan
Summary: In this study, a polyoxometalate-based crystalline polymer was used to prepare Ni-Mo-S-rGO-200-24-2 composite, which showed excellent HER activity and stability in KOH electrolyte. The synergistic effects among Ni3S2, MoS2, and rGO contributed to the enhanced electrocatalytic performance.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Shiyin Li, Jiaqi Wang, Xi Lin, Guoqiang Xie, Yan Huang, Xingjun Liu, Hua-Jun Qiu
Summary: A generic dealloying procedure was reported to synthesize nanoporous multicomponent anodic and cathodic catalysts for high-performance ethanol fuel cells. The flexible solid-state ethanol fuel cell demonstrated outstanding energy density with high flexibility, durability, and an inject-and-run function. The use of high-entropy alloy and dealloyed spinel nanosheets as catalysts contributed to the impressive performance of the fuel cell.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Benedetto Bozzini, Matteo Amati, Luca Gregoratti, Majid Kazemian, Francesco Tavola, Sandra Tedeschi, Gian Pietro De Gaudenzi
Summary: In this study, the composition and chemical state of the surface of hardmetal subjected to controlled electrochemical corrosion were analyzed using synchrotron-based scanning photoelectron microscopy and photoelectron microspectroscopy. The results showed that corrosion under different conditions led to surface enrichment and leaching of different chemical elements and species.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2024)
