Article
Materials Science, Coatings & Films
Navneet K. Singh, Gidla Vinay, Andrew S. M. Ang, Dhiraj K. Mahajan, Harpreet Singh
Summary: This study assesses the synergic effect of cavitation erosion and corrosion on two HVOF-sprayed nickel-based cermet coatings, WC-NiCr and WC-H, on Monel K-500 substrate. It was found that WC-NiCr coating reduced the cavitation erosion losses in Monel alloy by 45% and had better corrosion results. SEM analysis revealed that the corrosive medium generated defects on the coating surface, increasing the cavitation erosion losses. WC-NiCr coating is recommended to enhance the cavitation-corrosion resistance in Monel K-500 alloy.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Rahul Jude Alroy, M. Kamaraj, D. Vijaya Lakshmi, K. Praveen, P. Suresh Babu, G. Sivakumar
Summary: Thermal sprayed Cr3C2-NiCr coatings are widely used for protecting industrial components from erosive degradation. The choice of thermal spraying technique affects the coating microstructure and erosion performance. In this study, HVAF spray deposited coatings exhibited the best erosion resistance, followed by DS spray, while plasma sprayed coatings showed inferior erosion performance due to defective microstructure.
TRIBOLOGY INTERNATIONAL
(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
Physics, Multidisciplinary
K. Arunkumar, D. Thirumalaikumarasamy, P. Thirumal
Summary: Thermal spray cermet coatings can enhance the wear resistance and corrosion resistance of turbine blades, making them suitable for high temperature and corrosive environments. The angle of impingement was found to have the most significant impact on the erosion rate of the coatings.
Review
Engineering, Mechanical
Abhinay Kumar, Rajiv Kumar Garg, Anish Sachdeva
Summary: The energy needs of a country cannot rely solely on a single source, leading to the widespread use of renewable energy sources such as solar, wind, and hydro energy. Hydroelectric power plants have been installed in countries with sufficient hydro energy resources to generate electricity. However, countries with rivers originating from hilly areas face losses due to wear caused by silt particles in the water. To mitigate these losses, thermally sprayed hard surface coatings are widely used as a protective layer. This review focuses on composite coatings based on nickel and tungsten in slurry erosion conditions, discussing the extensive research conducted on them.
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME
(2023)
Article
Materials Science, Coatings & Films
Navneet K. Singh, Avneesh Kumar, Andrew S. M. Ang, Dhiraj K. Mahajan, Harpreet Singh
Summary: Monel K-500, a widely used nickel-based alloy, was subjected to slurry erosion tests with two HVOF-sprayed coatings, WC-10Ni-5Cr and WC-18Hastelloy C. The coatings significantly reduced the erosive wear in Monel alloy, with WC-10Ni-5Cr showing the least erosion losses.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Nicholas Curry, Satyapal Mahade, Abhilash Venkat, Shrikant Joshi
Summary: This study evaluates the erosion resistance of suspension plasma spray coatings compared to other air plasma spray coatings. The results show that suspension plasma spray coatings outperform porous coatings and can be considered as an alternative to dense coatings.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Rajinder Kumar, Khushdeep Goyal, Deepak Bhandari
Summary: The aim of this study was to investigate the slurry erosion behavior of nano-yttria-stabilized zirconia (YSZ) reinforced Cr3C2-25NiCr ceramic nanocomposite coatings on turbine steel. Erosion tests were conducted under hydro accelerated conditions at different levels of velocity, slurry concentration, impact angle, and particle size. Velocity was found to be the most influential factor on mass loss, followed by slurry concentration, impact angle, and particle size. Scanning electron microscopy analysis revealed that craters, micropores, platelets, plowing, spalling, and other factors contributed to the mass loss of both uncoated and coated samples. The incorporation of YSZ nanoparticles reduced the porosity of the coatings, resulting in less erosion. The 95% (Cr3C2-25NiCr) + 5% YSZ and 90% (Cr3C2-25NiCr) + 10% YSZ ceramic nanocomposite coatings exhibited better erosion resistance compared to the Cr3C2-25NiCr coatings due to their high microhardness and low porosity.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Vikrant Singh, Anil Kumar Singla, Anuj Bansal
Summary: In this research, different compositions of VC + CuNi-Cr coatings were deposited on hydro-machinery steel using HVOF spraying system. The slurry erosion resistance of the coatings was evaluated and it was found that the 100% VC coating showed exceptional resistance compared to other compositions, with the addition of CuNi-Cr converting the erosion mode from brittle to ductile.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Ishfaq Amin Maekai, G. A. Harmain, Zehab-ud-Din, J. H. Masoodi
Summary: This study investigated the slurry erosive wear of coatings sprayed on hydroelectric turbine machinery using the HVOF process. It was found that the WC-10Co-4Cr coating exhibited superior erosion resistance compared to the Cr3C2-25(Ni20Cr) coating. These coatings have the potential to significantly enhance the wear resistance of turbine materials, highlighting their importance in practical applications.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Chemistry, Physical
Alicja K. Krella, Dominika E. Zakrzewska, Marta H. Buszko, Artur Marchewicz
Summary: The study on the resistance of S235JR steel to erosion processes revealed that mass loss increased with increasing erosion intensity. Different erosion tests showed that cavitation and slurry erosion had different effects on surface damage and hardness of the steel, with cavitation resulting in stronger strain hardening.
Article
Engineering, Mechanical
R. J. Chung, J. Jiang, C. Pang, B. Yu, R. Eadie, D. Y. Li
Summary: This article reports on recent studies of erosion-corrosion of high manganese steel in slurry transport systems, comparing its performance to commonly used pipeline steels and other materials. The results show that the high strain-hardening capability of high manganese steel results in outstanding erosion resistance, making it more than twice as effective as ferritic steels. The study also compared the results to field trials conducted in an oil sands coarse tailings pipeline.
Article
Materials Science, Coatings & Films
Vikram Varadaraajan, Ramesh K. Guduru, P. S. Mohanty
Summary: Amorphous/nanocrystalline coatings are useful for high strength, wear and corrosion-resistant applications. The microstructure and mechanical properties of the coatings vary depending on the spray technique used. TWA and hybrid spray coatings exhibit higher strength and better wear and corrosion resistance compared to APS and HVOF coatings.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2022)
Article
Materials Science, Coatings & Films
Denise Koch, Daniel E. Mack, Robert Vassen
Summary: This study demonstrates the self-healing capability of Yttria-stabilized zirconia (YSZ) thermal barrier coatings (TBCs) through the incorporation of self-healing MoSi2 particles. The self-healing process relies on the oxidation of the particles, which leads to a volume expansion and sealing of cracks. The lifetime of the self-healing coatings is significantly extended compared to YSZ coatings without self-healing particles, as observed in burner rig tests. Microstructural analysis and furnace cycling tests provide insights into the different behavior and failure mechanisms of the self-healing TBCs.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Sarpreet Singh, Parlad Kumar, Deepak Kumar Goyal, Anuj Bansal
Summary: Research on laser cladding Colmonoy-6 + 50% WC powder on SS410 steel surfaces significantly improved the wear erosion resistance of the material. Impact velocity was found to be the major contributor to slurry erosion, followed by impact angle, average particle size, and slurry concentration.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Materials Science, Coatings & Films
Shivam Pandey, Anuj Bansal, Ankita Omer, Anil Kumar Singla, Deepak Kumar Goyal, Jagtar Singh, Munish Kumar Gupta
Summary: Research on cavitation erosion of hydro-machinery revealed the importance of protective coatings with Al2O3 and TiO2 materials, where the coating parameters play a crucial role in resisting cavitation damage. Comparing the cavitation erosion of bare AISI410 steel with coated surfaces, it was found that the coatings provide higher resistance to cavitation erosion.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Anuj Bansal, Jagtar Singh, Harpreet Singh, Deepak Kumar Goyal
Summary: Hydrophobic PTFE coatings with varying thicknesses were tested for cavitation erosion resistance on hydro-machinery SS410 steel. The coating with a maximum thickness of 121 μm exhibited the highest resistance, attributed to its lowest fracture toughness and better cushioning effect. Overall, thinner PTFE layers showed increased contact angle but also higher cavitation erosion.
Review
Engineering, Manufacturing
Anil Kumar Singla, Mainak Banerjee, Aman Sharma, Jagtar Singh, Anuj Bansal, Munish Kumar Gupta, Navneet Khanna, A. S. Shahi, Deepak Kumar Goyal
Summary: This review critically examines the important contributions related to selective laser melting (SLM) process parameters, defects, and post-processing techniques for Ti6Al4V alloy. Proper selection of process parameters and post-treatment methods are crucial in improving mechanical behavior of SLMed components. Efforts have been made to identify correlations between SLM parameters and defects, as well as analyzing the impact of post-processing approaches on mechanical behavior and biocompatibility of SLM-fabricated Ti6Al4V alloy.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Materials Science, Multidisciplinary
Sarpreet Singh, Parlad Kumar, Deepak Kumar Goyal, Anuj Bansal
Summary: Research on laser cladding Colmonoy-6 + 50% WC powder on SS410 steel surfaces significantly improved the wear erosion resistance of the material. Impact velocity was found to be the major contributor to slurry erosion, followed by impact angle, average particle size, and slurry concentration.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Lopamudra Palodhi, Biswajit Das, Harpreet Singh
Summary: Experimental investigations and numerical simulations have shown the systematic effect of particle size on materials, but there is a lack of systematic studies on the role of particle morphology. This paper addresses this gap by comparing deformation behavior and critical velocity of particles with varying morphologies and sizes. The study demonstrates the importance of understanding the distribution of particle size and morphology in order to optimize processing conditions.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Materials Science, Coatings & Films
Avneesh Kumar, Ravi Kant, Harpreet Singh
Summary: This study investigates the tribological behavior and performance of Titanium/Baghdadite cold sprayed composite coatings for artificial human joints in dry and simulated body fluid environments. The coatings are found to effectively protect biomedical grade steel from wear in different environments, with three-body abrasion wear and adhesive wear as the dominant mechanisms observed. The coatings exhibit good adhesion with the substrate, and their hydrophilicity improves with an increase in Baghdadite content.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Navneet K. Singh, Andrew S. M. Ang, Dhiraj K. Mahajan, Harpreet Singh
Summary: WC-NiCr and WC-Hastelloy C coatings were deposited on Monel K-500 substrate using HVOF-spray to enhance the cavitation erosion resistance of the alloy. Both coatings reduced the erosion volume loss of the alloy, with WC-NiCr showing a superior performance due to its better combination of microhardness and fracture toughness. The cavitation erosion in the coatings was characterized by the formation of craters, cavities, and debonding of splats, while microplastic tearing and microcracks were observed as the primary erosion mechanism in Monel K-500.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Green & Sustainable Science & Technology
Rachit Kumar Sharma, Geo Raju, Prabir Sarkar, Harpreet Singh, Ekta Singla
Summary: This study compares the environmental impacts of two dosage forms of paracetamol using life cycle assessment technique. The results show that syrup production has a higher contribution in various impact categories compared to tablet production, highlighting the importance of considering environmental sustainability in pharmaceutical product management.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2022)
Article
Materials Science, Multidisciplinary
Avneesh Kumar, Ravi Kant, Harpreet Singh
Summary: This study investigates the effect of laser remelting on the cold-sprayed titanium composite coatings and finds that it can improve the density, microhardness, and wear resistance of the coatings.
JOURNAL OF MATERIALS RESEARCH
(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
Energy & Fuels
Prabhjot Singh, Harpreet Singh, Anoop Kumar Singh
Summary: This paper presents an experimental study on the influence of air swirl vane angles on pollutants in a heavy oil fuel fired furnace. The results show that vane angles of 45 degrees and 30 degrees emit the least HC and CO, whereas a vane angle of 90 degrees emits the most. A vane angle of 45 degrees results in the lowest NOx emission. Furthermore, for complete combustion, the secondary air entry area should be twice the primary air entry area in the novel burner.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Materials Science, Multidisciplinary
Avneesh Kumar, Harpreet Singh, Ravi Kant
Summary: Deposition of coatings on a cheaper substrate material is an economical and effective way to improve its surface properties. This study examines the impact of substrate surface roughness and ceramic content on the deposition behavior of coatings, highlighting the importance of polishing the substrate for better adhesion. Additionally, high ceramic content in the feedstock leads to reduced deposition efficiency and mechanical properties. Furthermore, the cold sprayed Ti/20%TiO2 composite coating demonstrates successful corrosion and wear protection for the steel substrate.
METALS AND MATERIALS INTERNATIONAL
(2023)
Review
Chemistry, Physical
Surinder Singh, Christopher C. Berndt, R. K. Singh Raman, Harpreet Singh, Andrew S. M. Ang
Summary: The harsh operating conditions in the steel making processes lead to degradation of production hardware due to high temperature oxidation, erosion, wear, impact, and corrosive environments. This negatively affects steel product quality and efficiency, resulting in production downtime and maintenance costs. This article reviews the need for thermal spray coatings and advancements in materials and spray processes. It highlights the application and development of thermal spray coatings for various stages of steel making, including molten metal processing, continuous casting, annealing, galvanizing, and shaping processes. The potential use of thermal spray feedstock materials and processes to replace hazardous hard chrome plating is also discussed. The adoption of novel coating solutions is projected to improve productivity in the steel making industry as awareness and acceptance of thermal spray technology grow.
Review
Green & Sustainable Science & Technology
Sahil Dhiman, Ravinder Singh Joshi, Sachin Singh, Simranpreet Singh Gill, Harpreet Singh, Rakesh Kumar, Vinod Kumar
Summary: The increasing demand for customized products leads to more metallic waste, requiring advanced technologies for sustainable recycling. Ball milling technology is evaluated for recycling machining chips into chip powder for use in additive manufacturing processes. Despite the energy efficiency and promising results, challenges exist for the realization of the benefits of ball milling technology.
CLEANER ENGINEERING AND TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Rachit Kumar Sharma, Prashant Kumar Singh, Prabir Sarkar, Harpreet Singh
Summary: This study identified the most effective green interventions for green supply chain management using interpretive structural modelling technique. Developing environmental strategies, policies and procedures, as well as performance review and long term action plan, were found to be the most influential green interventions.
INTERNATIONAL JOURNAL OF SUSTAINABLE ENGINEERING
(2021)
