A5007873451- Metal and Thin Film Mechanics
- Diamond and Carbon-based Materials Research
- Advanced materials and composites
- Lubricants and Their Additives
- Tribology and Wear Analysis
- Boron and Carbon Nanomaterials Research
- Semiconductor materials and devices
- High-Temperature Coating Behaviors
- Adhesion, Friction, and Surface Interactions
- Advanced ceramic materials synthesis
- Ion-surface interactions and analysis
- Copper Interconnects and Reliability
- Force Microscopy Techniques and Applications
- ZnO doping and properties
- Gas Sensing Nanomaterials and Sensors
- Transition Metal Oxide Nanomaterials
- MXene and MAX Phase Materials
- Bone Tissue Engineering Materials
- High Entropy Alloys Studies
- Nuclear Materials and Properties
- Surface Roughness and Optical Measurements
- Copper-based nanomaterials and applications
- Electronic and Structural Properties of Oxides
- Magnesium Alloys: Properties and Applications
- Chalcogenide Semiconductor Thin Films
University of North Texas
2015-2025
DEVCOM Army Research Laboratory
2023
United States Army Combat Capabilities Development Command
2023
Southern Illinois University Carbondale
2004-2013
Wright-Patterson Air Force Base
2009
University of Nebraska–Lincoln
2001-2002
Solid lubricants (SLs) characterized by low coefficients of friction (μ) and wear rates (w) drastically improve the life span instruments that undergo extreme frictional wear. However, performance SLs such as sputtered or nanoparticulate molybdenum disulfide (MoS2), tungsten (WS2), graphite deteriorates heavily under operational conditions elevated temperatures high humidity. Here, we present our preliminary results, which demonstrate composites carbon nanotubes (CNTs) MoS2 produced...
The performance and durability of high-pressure fuel systems in combustion engines are critical for consistent operation under extreme conditions. High-pressure traditionally lubricated with that is compressed delivered to the chamber. However, lubrication presents significant challenges these when used low-viscosity fuels, leading increased wear rates, especially reciprocating contacts. This study delved into tribological steels varying alloy content (annealed hardened variants AISI-52100,...
Abstract To enhance the durability and reliability of high-pressure fuel system components operating with low-viscosity fuels, an analysis tribological performance potential coating material candidates was conducted. This study focuses on evaluating friction wear characteristics various coatings widely used by industry for surface protection, including carbides, nitrides, diamond-like carbon (DLC), solid lubricants, under accelerated reciprocating ball flat conditions intended to provide...
Ternary oxides have gained increasing attention due to their potential use as solid lubricants at elevated temperatures. In this work, the tribological properties of three ternary oxides—AgTaO3, CuTaO3, and CuTa2O6—were studied using a combination density-functional theory (DFT), molecular dynamics (MD) simulations with newly developed empirical parameters, experimental measurements (AgTaO3 CuTa2O6 only). Our results show that MD-predicted friction force follows trend AgTaO3 < CuTaO3...
This paper reports on the growth and characterization of structural mechanical properties tantalum zirconium nitride films subsequent simulation these using an ab initio calculation based density functional theory (DFT) within generalized gradient approximation. The were deposited by reactive unbalanced magnetron sputtering their physical chemical studied means x-ray diffraction (XRD), Rutherford backscattering (RBS), nanoindentation. XRD revealed that formed a solid solution lattice...
In this study, we demonstrate a facile and simple synthesis of quantum dot (QD)–polymer composites. Highly fluorescent semiconducting CdSe/ZnS dots were embedded in different commercially available polymers using one easy step. QD–polymer composite nanoparticles also synthesized template-assisted synthesis. particular, self-assembled lamellar micelles inside nanoporous alumina membranes which used for the mesoporous silica hollow nanotubes solid nanorods. We observed that addition excess...
Inhibiting the tribological failure of mechanical assemblies which rely on fuels for lubrication is an obstacle to maintaining lifetime these systems with low-viscosity and low-lubricity fuels. In present study, a MoVN-Cu nanocomposite coating was tribologically evaluated durability in high- as function temperature, load, sliding velocity conditions. The results indicate that effective decreasing wear friction relative uncoated steel surface. Raman spectroscopy, transmission electron...