A5045400721- High-Temperature Coating Behaviors
- Advanced materials and composites
- Metal and Thin Film Mechanics
- High Entropy Alloys Studies
- Diamond and Carbon-based Materials Research
- Additive Manufacturing Materials and Processes
- Advanced ceramic materials synthesis
- Metal Alloys Wear and Properties
- Nuclear Materials and Properties
- Catalytic Processes in Materials Science
- Tribology and Wear Analysis
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Copper-based nanomaterials and applications
- Additive Manufacturing and 3D Printing Technologies
- Flame retardant materials and properties
- Aluminum Alloys Composites Properties
- Intermetallics and Advanced Alloy Properties
- Particle Dynamics in Fluid Flows
- Semiconductor materials and devices
- Materials Engineering and Processing
- Laser Material Processing Techniques
- ZnO doping and properties
- Mechanical stress and fatigue analysis
- High Temperature Alloys and Creep
University West
2016-2025
Uka Tarsadia University
2019-2025
Indian Institute of Technology Ropar
2023
University of Lausanne
2020
International Advanced Research Centre for Powder Metallurgy and New Materials
2008-2017
Indian Institute of Technology Hyderabad
2013
Defence Metallurgical Research Laboratory
1991-2002
University of Idaho
1985-1990
Central Salt and Marine Chemicals Research Institute
1983-1990
Rashtrasant Tukadoji Maharaj Nagpur University
1988
Abstract Power generation from renewable resources has attracted increasing attention in recent years owing to the global implementation of clean energy policies. However, such power plants suffer severe high-temperature corrosion critical components as water walls and superheater tubes. The is mainly triggered by aggressive gases like HCl, H 2 O, etc., often combination with alkali metal chlorides that are produced during fuel combustion. Employment a dense defect-free adherent coating...
A multi-component and multi-phase-field modelling approach, combined with transformation kinetics modelling, was used to model microstructure evolution during laser metal powder directed energy deposition of Alloy 718 subsequent heat treatments. Experimental temperature measurements were utilised predict microstructural successive addition layers. Segregation alloying elements as well formation Laves δ phase specifically modelled. The predicted elemental concentrations then in estimate...
Abstract A growing understanding of wear behavior various thermally sprayed ceramic–metallic matrix coatings has occurred over recent years. This resulted from the continuous evolution in spraying methods as well material feedstock, and corresponding new aspects field that have been thoroughly explored. paper aims to review developments tungsten carbide-based coatings, with specific emphasis on evaluating alternative binders, processing routes tribological coatings. comprehensive evaluation...
Thermal spray high-entropy alloy (HEA) coatings have demonstrated potential for improving the wear resistance of conventional materials used in extreme engineering environments. In present work, an equiatomic AlCoCrFeNi HEA coating was manufactured using high velocity air fuel (HVAF) process. The phase and microstructural transformations gas-atomized (GA) powder during HVAF spraying were analyzed SEM, EDS EBSD techniques. tribological properties this sliding against Al2O3 ball at both room...
This paper investigates the thermal shock behavior of barrier coatings (TBCs) produced by axial suspension plasma spraying (ASPS). TBCs with different columnar microstructures were subjected to cyclic testing in a burner rig. Failure analysis these revealed clear relationship between lifetime and porosity. However, tailoring microstructure for enhanced durability is challenging due their inherently wide pore size distribution (ranging from few nanometers up tens micrometers). study reveals...
Development of visible-light-driven photocatalysts by employing a relatively simple, efficient, and cost-effective one-step process is essential for commercial applications. Herein, we report the first time synthesis in situ Cu-ion modified Ti3+ self-doped rutile TiO2 such facile solution precursor plasma spray (SPPS) using water-soluble titanium precursor. In SPPS process, self-doping on Ti4+ found to take place because electron transfer from created oxygen vacancies Ti4+-ions. Cu...
The effect of three important process parameters, namely laser power, scanning speed and stand-off distance on the deposit geometry, microstructure segregation characteristics in direct energy deposited alloy 718 specimens has been studied. Laser power were found to notably affect width depth deposit, while influenced height. An increase specific conditions (between 0.5 J/mm2 1.0 J/mm2) increased total area yielding varied grain morphologies precipitation behaviors which comprehensively...
Alloy 718 is a nickel-based superalloy that widely used as structural material for high-temperature applications. One concern arises when manufactured using powder bed fusion (PBF) residual stresses appear due to the high thermal gradients. These can be detrimental they degrade mechanical properties and distort components. In this work, in PBF built 718, both electron laser energy sources, were measured by neutron diffraction. The effects of process parameters post-treatments studied....