Article
Materials Science, Coatings & Films
Pengyuan Diao, Fang Wang, Xin Chu, Yu Long, Yingchun Xie, Chunming Deng, Guosheng Huang, Min Liu, Zexin Yu
Summary: In this study, CuZn35 powder was cold spray deposited on aluminum substrates for cavitation protection. The cold sprayed CuZn35 coatings showed good cold sprayability and coating performance on aluminum substrates, with high microhardness and bonding strength. The cavitation resistance of the coatings was lower than that of as-cast CuZn35.
SURFACE & COATINGS TECHNOLOGY
(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, 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
Materials Science, Coatings & Films
Jibo Huang, Wen Sun, Xin Chu, Haiming Lan, Yingchun Xie, Dongdong Ye, Renzhong Huang
Summary: In this study, NiCoCrAlTaY coatings were prepared on cobalt-based superalloy substrates by high pressure cold spray technology, and their microstructure, mechanical property, and tribological behaviors were systematically studied before and after thermal exposure at 1050 degrees C. The results showed that NiCoCrAlTaY coatings with a very dense structure could be obtained by high-pressure cold spraying. The coating remained completely intact without any cracking and spalling after thermal exposure. However, the wear resistance of the coating significantly decreased after thermal exposure with a decrease in hardness and an increase in friction coefficient and volume wear rate.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Pasquale Daniele Cavaliere, Antonella Rizzo, Daniele Valerini, Laura Capodieci
Summary: The wear and fretting behavior of IN625 cold spray coatings were analyzed, demonstrating that coatings produced under specific conditions can offer improved wear resistance and energy dissipation capabilities. Nanoindentation evaluation revealed an increase in hardness from the surface towards the substrate, leading to enhanced resistance to wear. Scratch tests at increasing loads also showed the coating's ability to resist damage under triaxial stresses.
Article
Materials Science, Multidisciplinary
Ji-Eun Ahn, Young-Kyun Kim, Sang-Hoon Yoon, Kee-Ahn Lee
Summary: An equiatomic CoCrFeMnNi high entropy alloy (HEA) coating layer was successfully prepared via a cold spray process, with heat treatments employed to control its microstructure and nano-indentation properties. Fine Cr-rich precipitates were found at grain boundaries and particle boundaries after heat treatment, and deformation twins were observed to significantly affect hardness improvement.
METALS AND MATERIALS INTERNATIONAL
(2021)
Review
Crystallography
Fabian Cezar Lupu, Corneliu Munteanu, Adrian Constantin Sachelarie, Vlad Nicolae Arsenoaia, Bogdan Istrate
Summary: This paper analyzes the improvement of the characteristics of different steels under extreme operating conditions, including those used in the manufacture of military components, bearings, and other parts. The use of cold spraying technology, which processes particles in a solid state, has proven to be an effective technique for improving material properties. The accelerated particles are deposited at values below their melting point, adhering to the surface instead of eroding it.
Article
Engineering, Aerospace
Jiawei Kelvin Bi, Zhi Cheng Kelvin Loke, Chi Keong Reuben Lim, Kok Hoon Tony Teng, Pak Keng Koh
Summary: This study investigates the mechanical properties of cold-sprayed materials and coatings made of aluminium 2024 and aluminium 7075 for repairs. The results show that cold spray can be used to restore thickness and repair oversized hole diameters in skin and panels, while maintaining good tensile, peel, bearing, and bending strength.
Article
Materials Science, Coatings & Films
Hongjian Wu, Chunjie Huang, Xinliang Xie, Shaowu Liu, Tao Wu, Thomas Niendorf, Yingchun Xie, Chunming Deng, Min Liu, Hanlin Liao, Sihao Deng
Summary: This article introduces four typical spray trajectories used in industrial robots during cold spray process and their effects on Cu deposits. The study found that spray trajectories have a significant impact on thermal history and residual stress distribution, but no significant differences were found in microstructures and mechanical properties. The Cu coating presented anisotropic characteristics that influenced performances in different directions, and post-heat treatment improved mechanical performances to some extent.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Enkang Hao, Jie Chen, Guang Liu, Lang Cui, Xiaoxia Wang, Bing Ma, Jinming Wu, Yulong An
Summary: NiCr and NiCo superalloy coatings were deposited using the high pressure cold spray technique. The formation mechanism, microstructural evolution, and mechanical properties of the coatings were investigated. The results showed that both coatings exhibited good mechanical properties and provided protection for 316L stainless steel.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Xiaping Fan, Xin Chu, Yingchun Xie, Dawei Zhou, Qingxu Tian, Yang Tong, Peter K. Liaw, Shuying Chen, Fanchao Meng
Summary: This study investigates the microstructure and mechanical properties of cold spray fabricated bulk high-entropy alloys (HEAs) with mixed CoCrFeNi and Ti powders. It is found that the addition of Ti and post-heat treatment contribute to densification and the formation of fine precipitates, enhancing the hardness, elastic modulus, strength, and ductility properties of the alloys. Additionally, post-heat treatment improves cohesion and grain uniformity, leading to an increase in ultimate tensile strength and elongation to failure.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Coatings & Films
Kyle Tsaknopoulos, Jack Grubbs, Matthew Siopis, Aaron Nardi, Danielle Cote
Summary: The study found that heat treatment can induce microstructural modifications in both the powder and sprayed deposits, and X-ray diffraction showed the presence of eutectic Si, Mg2Si and SiO2 in all specimens. Spheroidization of Si significantly increased during heat treatment, with an increase in the fraction of Mg2Si during both treatments.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Tunji A. Owoseni, Irene Ciudad de Lara, Sribalaji Mathiyalagan, Stefan Bjorklund, Shrikant Joshi
Summary: This study investigates the microstructure, dry sliding, and solid particle erosive wear performance of four different coatings engineered through the configuration of the nozzle of an HVAF spray gun. The densest of the coatings shows comparable performance to the bulk material tested under the same conditions. The results have implications for the potential adoption of HVAF-sprayed coatings in metal component repair.
Article
Materials Science, Coatings & Films
Monty Kumar, Shakti Kumar, Kailash Jha, Amitava Mandal
Summary: In this study, a hard solid-lubricating clad layer was developed on a Ti-6Al-4V substrate using pre-placed powder TIG cladding technique to improve its mechanical, corrosion, and electrical discharge wear properties. The combination effect of Ti, Ni, and Si coating powders with different percentages of La2O3 in a N2 environment was investigated. The analysis revealed the presence of both hard (NiTi, TiO2, and TiAlN) and solid lubricating (LaNi5 and Si3N4) phases. The sub-surface analysis showed defect-free cladding with strong metallurgical bonds and refined microstructure near the interface. The coated samples exhibited significantly improved mechanical wear, corrosion resistance, and reduced electrical discharge wear, making them suitable for various applications.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Dong Wu, Yaxin Xu, Wenya Li, Ningsong Fan, Yang Yang, Shuo Yin
Summary: In this study, an equimolar FeCoNiCrMn high-entropy alloy (HEA) was fabricated using solid-state cold spray additive manufacturing (CSAM) technique and post-annealing. The microstructure evolution and mechanical properties were evaluated. Tensile test results showed that the deposited sample annealed at 1000 degrees C for 2 h exhibited improved tensile strength and ductility compared to the as-sprayed sample. The combination of CSAM and post-annealing strategy achieved a strength-ductility synergy in HEA deposits.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Coatings & Films
P. Sirvent, M. A. Garrido, S. Lozano-Perez, P. Poza
SURFACE & COATINGS TECHNOLOGY
(2020)
Article
Materials Science, Coatings & Films
Mohammed Amine Khater, Sabik Abdelhadi Bouaziz, M. A. Garrido, P. Poza
Summary: This study aimed to investigate the mechanical and tribological properties of the titanium boride layer processed by a thermochemical boriding treatment. The formation, thickness, and hardness of the TiB2 layer were analyzed at different temperatures, along with nanoindentation tests for nanomechanical characterization. The influence of this treatment on the coefficient of friction and wear rate in a simulated body fluid environment was also studied.
SURFACE ENGINEERING
(2021)
Article
Materials Science, Coatings & Films
R. Cortes, M. A. Garrido, A. Rico, C. J. Munez, P. Poza, A. M. Martos, S. Dosta, I. G. Cano
SURFACE & COATINGS TECHNOLOGY
(2020)
Article
Engineering, Mechanical
S. Tortuero, M. A. Garrido, P. Poza, J. Rodriguez
Article
Materials Science, Coatings & Films
Paloma Sirvent, Miguel Angel Garrido, Joanne Sharp, William Mark Rainforth, Pedro Poza
SURFACE & COATINGS TECHNOLOGY
(2020)
Article
Energy & Fuels
X. Randez, F. Zaversky, D. Astrain, M. A. Garrido-Maneiro, S. Tortuero, A. Rico, P. Poza
Summary: This study evaluates the mechanical behaviour of a ceramic disk in an innovative receiver design, using a three-step approach including material characterization, CFD analysis, and FEM modeling to analyze stress fields and crack propagation. The investigation demonstrates the mechanical viability of the concept by analyzing stress fields and crack propagation.
Review
Materials Science, Multidisciplinary
Felice Rubino, Pedro Poza, Germana Pasquino, Pierpaolo Carlone
Summary: Solar power as a sustainable and affordable energy source has gained significant interest, but to promote its penetration in the energy market, it needs to be cost-competitive and continuously improve through the development of new materials and manufacturing processes. The manufacturing process significantly affects the efficiency and durability of solar power plants, making research and development of efficient manufacturing procedures a key aspect.
Article
Materials Science, Multidisciplinary
L. Alonso, M. A. Garrido, P. Poza
Summary: Currently, cold spray is widely used in coating applications due to its low temperature deposition process, which is suitable for additive manufacturing activities. The reliability of the coatings depends on the velocity of the powder during impact, which is controlled by spraying conditions and nozzle geometry. This study proposes an alternative model based on the one-dimensional isentropic theory to optimize the divergent part of the nozzle. The model integrates the equation of motion of the particle and maximizes the particle drag force. The analysis reveals optimal geometric parameters and the inverse proportional relationship between stagnation pressure and temperature.
MATERIALS & DESIGN
(2022)
Article
Energy & Fuels
David Merino-Millan, Claudio J. Munez, Miguel Angel Garrido-Maneiro, Pedro Poza
Summary: This study investigates thermal-sprayed Inconel 625 coatings as an alternative option for concentrated solar power plants. The results show that higher temperatures and longer exposure times lead to improved adherence and absorptivity of the coatings, which could potentially enhance the performance of concentrated solar power plants.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Energy & Fuels
N. Martinez, M. Lopez-Herraiz, A. Rico, C. J. Munez, P. Poza
Summary: Concentrating solar power (CSP) is becoming increasingly important in renewable energy. Selective coatings are commonly used for solar collector systems operated at low or medium temperatures, while high-temperature absorbing coatings are used for high-temperature applications. Studying the behavior of these coatings under high-flux conditions is valuable in developing more efficient technologies.
Article
Materials Science, Coatings & Films
Felice Rubino, David Merino, Alessia Teresa Silvestri, Claudio Munez, Pedro Poza
Summary: In this study, low-power compact plasma spray (CPS) equipment was used to deposit Cr3C2-based cermet coatings on carbon steel substrate. Design of experiment and ANOVA analysis were employed to select and optimize the spraying parameters and evaluate the effect of these variables on the morphology and mechanical properties of the coatings. By optimizing the processing parameters, dense and compact coatings with high hardness and good adhesion strength were obtained.
SURFACE & COATINGS 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
Engineering, Mechanical
Paloma Sirvent, Miguel Angel Garrido-Maneiro, Pedro Poza
Summary: The local wear properties of cold-sprayed Ti-6Al-4V coatings were studied for their potential application in aeronautical component repair. Two different cold spray conditions were used, and one condition was also heat-treated. Microstructural analysis was conducted to correlate the microstructure with wear properties. Microscratch tests were performed, and wear rates were calculated analytically and validated using confocal microscopy. Higher wear rates similar to the substrate material were achieved with the cold spray coating sprayed at higher temperatures and the heat-treated coating. The wear resistance was attributed to the coating's ability to plastically deform, which was influenced by the arrangement of different dislocations observed in the coatings.
Article
Engineering, Mechanical
Rocio Cortes, Miguel Angel Garrido-Maneiro, Pedro Poza
Summary: This study focuses on the analysis of wear resistance against micro-scratching in metallic coatings. 316L stainless steel powders were deposited onto low carbon steel S355J2 using cold spray, with variations in the pressure and temperature of the propellant gas. Nanoindentation tests were conducted to determine hardness and elastic modulus, microscratch tests were used to measure wear rates and friction coefficients, and scanning electron microscopy was used to analyze the wear mechanisms by evaluating scratch grooves. The relationship between hardness and wear rate was also determined.