Article
Materials Science, Coatings & Films
Kessaraporn Wathanyu, Karuna Tuchinda, Siriporn Daopiset, Sirinrath Sirivisoot
Summary: The corrosion resistance and biocompatibility of titanium (Ti) porous coating with high and low porosity gradients were studied. The results showed that the porosity gradients had little effect on corrosion resistance and rate, but could promote bone cell ingrowth.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Avneesh Kumar, Dhruva Kumar Goyal, Ravi Kant, Harpreet Singh
Summary: This study aimed to enhance the corrosion performance of cold-sprayed titanium/baghdadite bio-composite coatings through laser post processing. The results showed that laser treatment significantly improved the corrosion resistance by reducing porosity and surface roughness.
Article
Materials Science, Multidisciplinary
Magdi F. Morks, Saden H. Zahiri, Xiao-Bo Chen, Stefan Gulizia, Alejandro Vargas-Uscategui, Ivan S. Cole
Summary: The diffusion of oxygen and nitrogen in cold sprayed titanium deposits significantly affects their mechanical properties. By optimizing deposition parameters and conducting heat treatment, a malleable and high-density titanium material can be obtained.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Materials Science, Multidisciplinary
Hongwei Zhang, Wentao Qin, Cheng Man, Hongzhi Cui, Decheng Kong, Zhongyu Cui, Xin Wang, Chaofang Dong
Summary: This study investigates the influence of heat treatments on the microstructure and corrosion behavior of PBF-LB Ti6Al4V. The results show that different evolution processes occur at different temperatures, and the galvanic effect between alpha and beta phases affects the corrosion resistance of PBF-LB Ti6Al4V.
Article
Engineering, Mechanical
Novana Hutasoit, Muhammad Awais Javed, Rizwan Abdul Rahman Rashid, Scott Wade, Suresh Palanisamy
Summary: Al6061 alloy components traditionally manufactured through casting, forging, rolling, and machining processes have high scrap/waste generation. However, advanced additive manufacturing processes offer reduced material wastage potential. This study explores the mechanical and corrosion properties of Al6061 samples fabricated through cold spray additive manufacturing, highlighting the influence of build orientation and heat treatment on the material's performance. Heat treatment was found to significantly improve mechanical properties by inducing metallurgical bonding, essential for components exposed to corrosive environments.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Materials Science, Coatings & Films
Yingkang Wei, Wenhao Zhang, Juan Zhang, Yan Wang, Xin Chu, Shanquan Qi, Yingchun Xie, Shifeng Liu
Summary: In this study, Ti-based corrosion protection coatings with high density were prepared via cold spray using mixed powders of TC4 and Ti. The coatings showed excellent corrosion resistance and great potential for economical and effective preparations.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Mieczyslaw Scendo, Katarzyna Staszewska-Samson
Summary: In this study, a titanium protective layer was deposited onto Al7075 substrate using a cold spray method. The influence of nozzle standoff distance on the mechanical properties and corrosion resistance of the Ti coating was investigated. The results showed that a standoff distance of 70 mm resulted in the highest microhardness and the lowest corrosion rate.
Article
Engineering, Manufacturing
Sebastien Weiller, Francesco Delloro
Summary: This study aims to understand the mechanisms of pore formation during the build-up of cold spray coatings through numerical simulations. The study reveals that pore formation is mainly caused by two intricate mechanisms: interfacial porosity at particle/particle interfaces and stack porosity due to particle density variations in the gas flow. Additionally, an original method to estimate porosity from multi-particle impact simulations is presented. The study emphasizes the importance of choosing the reference volume for porosity computation accurately.
ADDITIVE MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
Haifeng Zhu, Xiaopeng Wang, Wei Meng, Fantao Kong
Summary: Different heat treatment processes were applied to as-cold rolled Ti-0.3Ni sheets in this study, leading to changes in microstructure and properties. It was found that the variation in Ti2Ni precipitation caused by different heat treatment methods resulted in differences in the electrochemical performance of the material.
Article
Materials Science, Multidisciplinary
Dibakor Boruah, Xiang Zhang
Summary: The study found that post-deposition solution treatment and ageing (STA) significantly improves the adhesive strength of cold sprayed Ti6Al4V coatings on Ti6Al4V substrates, particularly achieving over 520% improvement on ground substrates with a measured value exceeding 766 MPa. Additionally, STA increases the level of interfacial mixing, leading to better adhesion performance, reaching 81% of the ultimate tensile strength of Ti6Al4V.
Article
Materials Science, Coatings & Films
Lijing Yang, Shaopeng Wang, Xiaotao Luo, Pei Wang, Haiyu Yang, Huan Li, Jiayi Xiang, Xue Bai
Summary: The interfacial microstructure and bonding characteristics of cold-sprayed titanium alloy after heat treatment were studied. It was found that the nanocrystallization during cold spray does not lead to significant metallurgical bonding between the particles. The stress and dislocation distribution of the interfacial microstructure result in various microstructure features and growth rates during heat treatment.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2023)
Article
Chemistry, Physical
Zhenpeng Zhou, Xiao Chen, Xiaozhen Hu, Sheng Li, Menglong Lv, Yiting Xie, Hailong Yao, Hongtao Wang, Xiaobo Bai
Summary: The influence of post-process heat treatment on cold-sprayed Zn coatings on the Mg alloy substrate was investigated. The study found that heat treatment affected the microstructure and microhardness of Zn coatings, as well as the tensile strength. However, the corrosion properties of the coatings were minimally affected.
Article
Materials Science, Multidisciplinary
Ashokkumar Mohankumar, Thirumalaikumarasamy Duraisamy, Vignesh Packkirisamy, Deepak Sampathkumar
Summary: In this study, a surface coating technique was used on the AZ31B Mg alloy with AA2024/Al2O3 coating powder through a cold spray process. The porosity, corrosion rate, and wear rate of the deposited Mg alloy were investigated. The results showed that the hybrid deep belief network-mayfly optimization approach yielded results closer to the experimental data compared to the BBD-RSM method.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Chemistry, Physical
Rafal Zybala, Bartosz Bucholc, Kamil Kaszyca, Krystian Kowiorski, Dominika Sobon, Wojciech Zorawski, Dorota Moszczynska, Rafal Molak, Zbigniew Pakiela
Summary: Additive manufacturing (AM) has witnessed remarkable development recently due to its relatively high efficiency. Cold spraying (CS), a specific method of AM, is used for coating, repairing machine parts, and manufacturing new components. This study attempts to employ laser surface treatment (LST) for cold-sprayed coatings on an aluminium alloy substrate and investigates the influence of laser beam interaction time on the coatings' properties.
Article
Materials Science, Multidisciplinary
Lijing Yang, Pei Wang, Xiaotao Luo, Huan Li, Haiyu Yang, Shaopeng Wang, Qingyu Li
Summary: In this study, Ti6Al4V deposits were prepared by cold spray and demonstrated porous microstructure and deformation ultrafine grain zone at the bonding interface. EBSD results showed grain orientation signals at the edge of particles and some grains smaller than 500 nm. TEM and SADPs revealed a gradient structure in the deposits.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Ceramics
Daniel Tejero-Martin, Mingwen Bai, Jitendra Mata, Tanvir Hussain
Summary: The research demonstrates that suspension high velocity oxy-fuel spraying can improve the porosity of thermal barrier coatings, and neutron scattering and image analysis techniques are helpful for studying porosity. X-ray diffraction and micro-hardness testing can provide insights into the effects of phase transformation on the mechanical properties of thermal barrier coatings.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
F. Venturi, S. Kamnis, T. Hussain
Summary: A novel process incorporating carbon nano-tubes (CNT) into WC-Co thermal spray powder has been shown to increase microhardness but decrease fracture toughness of coatings. Improved carbide retention index and wear performance were achieved by lowering process temperature and adding CNT. Tailored choice of CNT concentration offers enhanced mechanical properties for different applications.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Coatings & Films
S. Bano, A. Rincon Romero, Md Towhidul Islam, D. M. Grant, I. Ahmed, T. Hussain
Summary: Phosphate-based glass coatings were produced using SHVOF thermal spray process, with coatings at 75 kW flame power showing higher degradation and ion release rates due to their rougher surface. Raman analysis revealed a reduction in Q(2) species and an increase in Q(1) and Q(0) species in the coatings compared to the initial glass, leading to lower degradation rates and reduced ion release profiles.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Ronnie G. Woodward, Athanasios Toumpis, Alexander Galloway, Fiona Sillars, Tiziana Marrocco, Maider Olasolo, Andrew Wallace
Summary: Environmental conditions, testing variables, and material properties significantly influence the sliding wear behavior of all tribosystems. AISI 4330 and 15-5PH discs produced higher volume losses in the dry regime than in the NaCl regime, showing that the solution had a beneficial effect against the dry tribosystem.
TRIBOLOGY TRANSACTIONS
(2021)
Article
Materials Science, Multidisciplinary
Nadimul Haque Faisal, Nazmi Sellami, Federico Venturi, Tanvir Hussain, Tapas Mallick, Firdaus Muhammad-Sukki, Alex Bishop, Hari Upadhyaya, Nirmal Kumar Katiyar, Saurav Goel
Summary: This study investigates the feasibility of manufacturing large-scale metamaterial coatings using the thermal spray technique. Comparing Cr2O3 and TiO2 coatings on different substrates, it was found that Cr2O3 coatings on aluminum substrates have improved optical performance, making them more suitable for fabricating opto-electronic devices. Through novel applications of thermal spray techniques, large-scale manufacturing of metamaterial coatings is shown to be possible, impacting electromagnetic wave propagation.
EMERGENT MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
C. J. Akisin, F. Venturi, M. Bai, C. J. Bennett, T. Hussain
Summary: The study investigated the microstructure, mechanical properties, and wear resistance of low-pressure cold-sprayed Al-Mg/Al2O3 composite coatings. The results showed that the Al-10Mg/Al2O3 composite coating exhibited better wear resistance and lower specific wear rate compared to the Al-7Mg/Al2O3 composite coating, with abrasive wear identified as the primary wear mechanism. Notably, three-body abrasion mode was observed due to the entrapped Al2O3 particles between the Al2O3 counterbody and the coating contact surfaces.
EMERGENT MATERIALS
(2021)
Article
Engineering, Mechanical
K. Derelizade, F. Venturi, R. G. Wellman, A. Kholobysov, T. Hussain
Summary: WC-Co coatings have been used for decades as wear resistant coatings in aero engines, and introducing two different graphene nanoplatelets into the coating improved wear performance against alumina and reduced damage to the counter surface. Despite increasing the porosity of coatings, the addition of GNPs overall improved the wear performance of the system.
Review
Materials Science, Multidisciplinary
Nadimul Haque Faisal, Rehan Ahmed, Nazmi Sellami, Anil Prathuru, James Njuguna, Federico Venturi, Tanvir Hussain, Hamed Yazdani Nezhad, Nirmal Kumar Katiyar, Saurav Goel, Hari Upadhyaya, Shrikant Joshi, Firdaus Muhammad-Sukki, Radhakrishna Prabhu, Tapas Mallick, Will Whittow, Spyros Kamnis
Summary: This review consolidates scattered literature on thermally sprayed coatings with nonionizing electromagnetic wave absorption and shielding capabilities, exploring their potential value in diverse applications and identifying key research areas related to material selection and coating fabrication.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yuanbo T. Tang, Anh Hoang Pham, Shigekazu Morito, D. Graham McCartney, Roger C. Reed
Summary: This study investigates the solid-state growth of M7C3 carbide at different interfaces in an austenitic Ni-Cr-Fe alloy using high temperature confocal laser scanning microscopy and 3D tomographic technique. The carbide develops dendritic morphology and grows laterally across the free surface via a diffusion-assisted mechanism. The study also confirms the direct connection between surface carbides and dendritic carbide at grain boundaries.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Ashish Arote, Junji Shinjo, D. Graham McCartney, Roger C. Reed
Summary: To accurately simulate the free dendritic growth problem, a computationally efficient, accurate, and elegant cell capturing method termed limited circular neighbourhood (LCN) is proposed. The LCN method is able to reduce artificial grid anisotropy and capture growth orientation accurately, resulting in reduced mass loss and shape error compared to other methods. It is also demonstrated that the LCN method is effective for both free dendrite growth in a pure material and constrained dendritic growth in a binary alloy with multiple growth sites.
COMPUTATIONAL MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Samuel R. Rogers, Jaimie Daure, Philip Shipway, David Stewart, David Dye
Summary: Research and development of wear-resistant steels is being carried out to reduce cobalt within the primary circuit of PWR's. The focus is on understanding galling mechanisms, particularly prevalent in PWR valves. Findings show that large shear stresses and adhesive transfer occur during galling due to the difference in manganese content between 304L and 316L stainless steels, even at relatively low compressive stresses of 50MPa.
SCRIPTA MATERIALIA
(2022)
Article
Engineering, Mechanical
T. Zhu, C. J. Bennett, P. H. Shipway
Summary: Recent research has shown that the wear rate in fretting of metals is influenced by the contact size, with oxygen and debris transport being the rate-determining processes. Non-conforming contacts were used to study the dependence of wear on slip amplitude, with smaller slip amplitudes resulting in delayed initiation of wear. The development of wear scar profile was also examined, with smaller slip amplitudes causing W-shaped scars and larger slip amplitudes causing U-shaped scars. Scanning electron microscopy was used to study the process of debris-ejection as the rate determining process.
Article
Engineering, Mechanical
J. L. Daure, D. Koti, M. J. Carrington, D. G. McCartney, D. A. Stewart, P. H. Shipway
Summary: Austenitic stainless steels have good corrosion resistance properties, but their use in components with motion under load is limited by poor galling behavior. In this study, the galling behavior of a dissimilar austenitic stainless steel pair was examined under different environmental temperatures, rotational speeds, and sliding distances. It was found that galling became more severe with increased temperature, but was not significantly affected by sliding speed or interruptions during rotation. The measurement of friction coefficient and surface observations revealed that galling did not occur initially, but was a result of surface damage accumulated during sliding.
Article
Automation & Control Systems
Halar Memon, Eskil Gjerde, Alex Lynam, Amiya Chowdhury, Geert De Maere, Grazziela Figueredo, Tanvir Hussain
Summary: This study proposes the first use of the active learning framework in thermal spray to enhance the accuracy of in-flight particle characteristics prediction. By implementing Bayesian Optimization, the maximum uncertainty is reduced, significantly improving the prediction accuracy and informativeness of the existing database. The AL-driven optimization not only accurately predicts the particle characteristics but also finds expected improvements around desired in-flight characteristics.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2024)
Article
Materials Science, Multidisciplinary
Halar Memon, Kah Leng, Acacio Rincon Romero, Siddharth Lokachari, Nicholas Curry, Tanvir Hussain
Summary: This study evaluates the performance of thermal barrier coatings in terms of surface temperatures and resistance to a corrosive environment. It shows that suspension high-velocity oxy-fuel (SHVOF)-sprayed dense vertically cracked (DVC) topcoats perform better than suspension-plasma-sprayed (SPS) columnar structure (CS) topcoats. The DVC topcoats offer a balanced trade-off and exceed the durability of the CS topcoats.
ADVANCED ENGINEERING MATERIALS
(2023)