Article
Chemistry, Physical
Wojciech Zorawski, Anna Goral, Medard Makrenek, Lidia Litynska-Dobrzynska, Pawel Czaja
Summary: This study investigates the effect of surface roughness on cold-sprayed nickel coatings. The results show that surface preparation significantly affects coating adhesion and microstructure. Coatings deposited at high temperatures exhibit a dense microstructure and good adhesion. Increasing temperature results in thicker coatings and enhances microhardness, nanohardness, elastic modulus, and adhesion. There is no distinct dependence of surface roughness and thickness on the mechanical properties of the coatings.
Article
Automation & Control Systems
Maricruz Hernandez-Hernandez, Rodrigo Gonzalez-Mejia, Victor Hugo Mercado-Lemus, Adriana Gallegos-Melgar, Isabel Pereyra, Juan Munoz-Saldana, Jan Mayen
Summary: Descriptive and inferential statistics were used to analyze data from the LPCS process, studying the relationship between process input variables (nozzle type, standoff distance, and particle velocity) and the output variables (coating porosity, thickness, and deposition efficiency). It was found that the nozzle type had the greatest impact on the final coating properties, with the rectangular nozzle leading to higher particle rebound and increased porosity. The round nozzle was recommended for obtaining coatings with low porosity levels, independent of the standoff distance.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Qiang Wang, Wenjuan Niu, Xu Li, Peng Han, Xuan Mao, Ju Yang, Ming-Xing Zhang
Summary: Cold spray (CS) has significant technical advantages in additive manufacturing of aluminum matrix composites. This study comprehensively studied the effect of Al2O3 content and heat treatment temperature on the microstructure and mechanical properties of the deposits, showing that as the content of Al2O3 increases, the deposits exhibit improved hardness, UTS, and elongation in the as-sprayed state. Additionally, the bonding between Al particles in the deposits is observed to transform from mechanical interlocking to metallurgical bonding with increased heat treatment temperature, leading to improved ductility.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Hongjin Liu, Mingkun Fu, Shaozhi Pang, Huaiqing Zhu, Chen Zhang, Lijun Ming, Xinyu Liu, Minghui Ding, Yudong Fu
Summary: Cu, Ni and Al powders were mixed and ground via ball milling, and then deposited as coatings using low pressure cold spraying (LPCS) technology. The particle morphology had an effect on the powder structure and the microstructure, composition, and mechanical properties of the coatings. The ball milling treatment improved the adhesion and wear properties of the coatings, with higher deposition efficiency and lower friction coefficient and wear rate observed at certain ball milling speeds.
Article
Materials Science, Multidisciplinary
Amir Pahlevani, Hamidreza Mohammadian Semnani, Hassan Abdoos
Summary: This study investigates the potential of reducing sintering temperature by designing a new tungsten heavy alloy. The addition of antimony influences the microstructure, relative density, hardness, and compressive yield strength of the alloys. The results demonstrate that the tungsten particle size and relative density increase initially and then decrease with increasing Sb content, while the compressive yield strength decreases. The W-Ni-Sb alloys show comparable properties to conventional W-Ni-Fe alloys, but can be sintered at lower temperatures.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Vladislav S. Shikalov, Tomila M. Vidyuk, Artem A. Filippov, Ivanna D. Kuchumova
Summary: This paper presents the investigation results of copper-tungsten coatings with different compositions on aluminum alloy substrates. It was found that increasing tungsten content in the coatings improves their microhardness and Young's modulus, as well as bonding strength. Cu-W coatings show better wear resistance compared to pure copper coatings under dry sliding wear conditions.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Xiaohan Dang, Bing Zhang, Zhijuan Zhang, Pengcheng Hao, Yi Xu, Yingchun Xie, Renzhong Huang, Kuaishe Wang, Wen Wang, Qiang Wang
Summary: A multiple processing technique combining cold spraying and accumulative roll bonding was used to prepare multilayered 1060Al/AleAl(2)O(3) composites with improved ductility. The microstructural evolution, tensile properties, and fracture behavior of the composite were analyzed to understand the mechanisms behind the high strength and ductility achieved through optimized processing. Analysis of microstructural features provided insights into the underlying mechanisms explaining the improved mechanical properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Zhijuan Zhang, Bing Zhang, Xiaohan Dang, Tianli Zhao, Yingchun Xie, Jun Cai, Kuaishe Wang
Summary: This study successfully prepared laminated particle-reinforced aluminum matrix composites (LPRAMCs) using a combination of cold spraying and accumulative roll bonding techniques. The research investigated the effects of Al2O3 particle content on the microstructure, tensile properties, and fracture morphology of the composites. The findings showed that composites with lower Al2O3 particle content exhibited higher elongation but lower ultimate tensile strength during the accumulative roll bonding process.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Materials Science, Multidisciplinary
Pedro Poza, Miguel Angel Garrido-Maneiro
Summary: Cold spray (CS) is a solid-state processing technique for depositing coatings on bulk materials to improve functionality and extend service life. Coatings generated via CS exhibit similar properties to bulk materials.
PROGRESS IN MATERIALS SCIENCE
(2022)
Article
Materials Science, Coatings & Films
M. Winnicki, L. Latka, M. Jasiorski, A. Baszczuk
Summary: This article focuses on the mechanical tests of TiO2 coatings obtained by the Cold Spray method, showing that an amorphous coating has the highest adhesion with a critical load of 15.8 +/- 1.3 N when deposited onto aluminum and steel substrates. Different types of research were performed to analyze the mechanical properties of the coatings, such as scratch test, nanoindentation, coatings microhardness, and SEM analysis.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Yupeng Ren, Naeem ul Haq Tariq, Hanhui Liu, Xinyu Cui, Yanfang Shen, Jiqiang Wang, Tianying Xiong
Summary: By subjecting cold sprayed Al deposits to unidirectional impact forging in the temperature range of 250-300°C, the microstructure and mechanical properties of the deposits can be significantly modified and improved. Hot-forging reduces porosity and enhances inter-particle diffusion, dynamic recovery, and recrystallization mechanisms, resulting in enhanced ultimate tensile strength and elongation in the Al deposits.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Ceramics
Qiqi Zhu, Ji Zou, Weimin Wang, Jinyong Zhang, Weiming Guo, Huatay Lin, Wei Ji, Zhengyi Fu
Summary: Hf0.95Nb0.05B2 ceramics and their composites with 20 vol% SiC were prepared through high-pressure spark plasma sintering. The densification, microstructures, and mechanical properties of the materials were investigated. Densification of HfB2 ceramics was challenging, but a dense microstructure was achieved under specific sintering conditions. The Hf0.95Nb0.05B2-20 vol% SiC composite exhibited exceptional mechanical properties due to its ultrafine grains and high-density defects.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Coatings & Films
Zongxiao Zhu, Tianzuo Shi, Wenyuan Chen, Linjun Wang, Juanjuan Chen, Jun Cheng, Shengyu Zhu, Jun Yang
Summary: In this work, dense CuSn10/WC-17Co composite coatings were deposited using low-pressure cold spraying (LPCS) technology. The effect of WC-17Co cermet content on the microstructure, mechanical properties, and tribological behavior of the coatings was investigated. The results showed that increasing WC-17Co content improved the deformation, hardness, bonding strength, and wear resistance of the composite coatings.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Kaiqiang Wu, Wen Sun, Adrian Wei-Yee Tan, Iulian Marinescu, Erjia Liu, Wei Zhou
Summary: In this study, Inconel 625 coatings were successfully deposited on 6061 aluminum alloy using high-pressure cold spray, exhibiting excellent mechanical and tribological properties. The coatings showed good adhesion strength, high and uniform hardness values, and tribological performance influenced by normal load and sliding velocity.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Fei Yang, Liming Dong, Lei Cai, Linfeng Wang, Zonghan Xie, Feng Fang
Summary: The study showed that low oxygen copper wires exhibit <111> texture at low drawing strains and develop a fibrous structure with staggered distribution of <111> and <100> textures at high strains. The electrical conductivity decreases then increases with cold drawing strain, reaching a minimum value at a strain of 1.91. Dynamic recrystallization occurs at strains higher than 2.74, resulting in decreased dislocation density and increased grain size.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Editorial Material
Materials Science, Coatings & Films
Andre McDonald, Fardad Azarmi, Kantesh Balani, Jan Cizek, Heli Koivuluoto, Yuk-Chiu Lau, Hua Li, Filofteia-Laura Toma
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2022)
Article
Chemistry, Applied
Valentina Donadei, Heli Koivuluoto, Essi Sarlin, Henna Niemela-Anttonen, Tommi Varis, Petri Vuoristo
Summary: This study investigates the performance and durability of lubricated polymer coatings under cyclic icing/deicing tests. The results showed stable icephobic behavior for some coatings, while others experienced a decrease in performance over the cycles. Cyclic testing caused mechanical damage to the surfaces, resulting in increased surface roughness and reduced hydrophobicity.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Polymer Science
Valentina Donadei, Heli Koivuluoto, Essi Sarlin, Petri Vuoristo
Summary: Icephobic coatings have great significance in various industries facing icing problems. However, their durability in real applications is currently limited. Therefore, it is necessary to understand the degradation of coatings under different environmental stresses for further coating development. In this study, lubricated icephobic coatings were fabricated using a flame spray method with hybrid feedstock injection. The performance of the coatings was characterized and investigated under various environmental stresses, including repeated icing/deicing cycles, immersion in corrosive media, and exposure to UV irradiation. The results showed that the coatings exhibited medium-low ice adhesion and slightly more stable icephobic behavior for cottonseed oil-based coatings. Surface roughness slightly increased and wetting performances decreased after cyclic tests, but no chemical changes were observed. The coatings also demonstrated good chemical resistance in selected corrosive media, with better performance for paraffin-based coatings. However, a slight decrease in hydrophobicity was detected due to surface structural changes. The paraffin-based coatings showed better resistance under UV irradiation based on carbonyl index and color change measurements.
Article
Materials Science, Coatings & Films
Mervi Somervuori, Tommi Varis, Maria Oksa, Tomi Suhonen, Petri Vuoristo
Summary: The corrosion performance of NiCr and NiCrBSi coatings produced by APS, HVOF, and HVAF was investigated using electrochemical measurements and immersion tests. The NiCr coatings outperformed the NiCrBSi coatings in terms of corrosion resistance. The impact of the coating process on corrosion resistance was lower compared to the choice of materials, NiCr or NiCrBSi. All the coatings exhibited a tendency towards passivation but suffered from localized corrosion, primarily in heterogeneous areas of the coatings.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2022)
Article
Metallurgy & Metallurgical Engineering
Jaakko Tapiola, Jari Tuominen, Jorma Vihinen, Petri Vuoristo
Summary: This study investigated the use of the cold metal transfer (CMT) welding technique for manufacturing thick and low diluted Stellite 12 hardfacings on martensitic stainless steel. The coatings were examined using microscopy, X-ray diffraction, and hardness measurements. Self-mated sliding wear tests showed similar coefficients of friction at both room temperature and 300 degrees C, but a greater loss of material at high temperature. However, the wear performance of the CMT coatings did not reach that of the laser clad Stellite 6 reference material.
WELDING IN THE WORLD
(2023)
Article
Materials Science, Coatings & Films
Tommi Varis, Juha Lagerbom, Tomi Suhonen, Sakari Terho, Jussi Laurila, Petri Vuoristo
Summary: This study aims to enhance the corrosion resistance and wear resistance of iron-based materials through strain hardening, solid solution strengthening, and precipitation hardening. Experimental results show that iron-based coatings possess satisfactory mechanical and chemical properties and are cost-effective, making them suitable for various applications.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Reza Jafari, Jarkko Kiilakoski, Mari Honkanen, Minnamari Vippola, Heli Koivuluoto
Summary: This study demonstrates the feasibility of fabricating functional aluminum/quasicrystalline (Al-QC) composite coatings by cold spray technology. By adjusting the cold spray process parameters, composite coatings with different QC-Al ratios were successfully deposited. The results show that the Al-QC composite coatings have a dense structure, well-integrated and adherent deposits, providing structural reliability and enhanced hydrophobic behavior. The study also demonstrates the feasibility of repairing eroded cold-sprayed Al6061 by depositing composite coatings.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2023)
Correction
Materials Science, Coatings & Films
Reza Jafari, Jarkko Kiilakoski, Mari Honkanen, Minnamari Vippola, Heli Koivuluoto
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Tommi Varis, Aki Makela, Tomi Suhonen, Jussi Laurila, Petri Vuoristo
Summary: The interlamellar cohesion of thermal spray coatings greatly influences their mechanical properties and ability to resist wear/erosion. Micro-tensile testing was used to evaluate the mechanical response of free-standing coatings. The different materials and spray methods used resulted in different microstructures and stress-strain relationships, which affected the cavitation erosion wear. The results are crucial for understanding the suitability of thermal spray coatings for different wear conditions.
SURFACE & COATINGS TECHNOLOGY
(2023)
Editorial Material
Materials Science, Coatings & Films
Andre McDonald, Emine Bakan, Jan Cizek, Sarka Houdkova, Heli Koivuluoto, Yuk-Chiu Lau, Hua Li, Filofteia-Laura Toma
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Tommi Varis, Juha Lagerbom, Tomi Suhonen, Lassi Raami, Sakari Terho, Jussi Laurila, Pasi Peura, Petri Vuoristo
Summary: Iron-based coatings are a sustainable solution for wear applications, and cold worked tool steels have potential for coating applications. This study investigates the potential of AISI D2 cold worked tool steel as a thermal spray coating and explores the effect of different heat treatments on the microstructure and properties of the coatings.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Engineering, Environmental
Henna Niemela, Mikko Tuominen, Heli Koivuluoto, Petri Vuoristo
Summary: Surface icing is caused by liquid water encountering the surface. Slippery liquid infused porous surfaces, SLIPS, need to maintain wetting durability, lubricant stability, and low sliding friction to function effectively in outdoor applications. Durability testing is crucial to understand the loss of functionality and to analyze the performance differences between slippery surfaces.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Rocio Cortes, Miguel Angel Garrido-Maneiro, Heli Koivuluoto, Giovanni Bolelli, Stefania Morelli, Veronica Testa, Luca Lusvarghi, Jan Kondas, Pedro Poza
Summary: This study investigates the mechanical properties and local wear behavior of high-pressure cold-sprayed Inconel 625 coatings deposited under different spraying conditions using different particle size distributions of powders. Nanoindentation tests and microscratch tests were conducted to determine the elastic modulus, hardness, and local wear rate of the coatings. The scratch micromechanisms were analyzed using scanning electron microscopy. The results were compared with coatings processed by more traditional methods.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Jarno Reuna, Raul Kanter, Niklas Kandelin, Kaisa Kiuru, Heli Koivuluoto, Mircea Guina
Summary: The functionality and durability of nanostructured alumina coatings exposed to atmospheric icing have been assessed and it was found that hydrophobic treated nanostructured alumina performs well in harsh conditions.
