UNT Scholarly Works - 123 Matching Results
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- Activation Volume and Energy for Dislocation Nucleation in Multi-Principal Element Alloys
- Paper describes study evaluating incipient plasticity in multi-principal element alloys, CoCrNi, CoCrFeMnNi, and Al0.1CoCrFeNi by nano-indentation and compared with pure Ni.
- Additive Manufacturing of Metals: A Brief Review of the Characteristic Microstructures and Properties of Steels, Ti-6al-4v and High-Entropy Alloys
- This article presents a brief review of the microstructures and mechanical properties of selected metallic alloys processed by additive manufacturing (AM).
- Analyzing the Effectiveness of Microlubrication Using a Vegetable Oil-Based Metal Working Fluid during End Milling AISI 1018 Steel
- This article describes a study in which a vegetable oil-based lubricant was used to conduct wear analysis and to analyze the effectiveness of microlubrication during end milling AISI 1018 steel.
- Anti-Fretting Wear Coating for Substrates
- Patent relating to an anti-fretting wear coating for substrates.
- Atomic Distribution in Catalytic Amorphus Metals
- This article investigates the atomic distribution in catalytically active metallic glass alloys using three-dimensional atom probe microscopy.
- Atomic Simulations of Twist Grain Boundary Structures and Deofrmation Behaviors in Aluminum
- This article investigates twist grain boundaries with molecular dynamic simulations to reveal their atomic structures, energy and interactions with dislocations.
- Bioactive glass coatings on metallic implants for biomedical applications
- Article provides a detailed overview of the benefits and issues of metal alloys when used as biomedical implants and how they are improved by bioactive glass-based coatings for biomedical applications.
- Biocompatible, large-format, inkjet printed heterostructure molybdenum disulfide-graphene photodetectors on conformable substrates
- This article describes an inkjet printed, biocompatible, heterostructure photodetector that was constructed using inks of photo-active molybdenum disulfide (MoS2) and electrically conducting graphene which facilitated charge collection of the photocarriers. The importance of such devices stems from their potential utility in age-related-macular degeneration, which is a condition where the photosensitive retinal tissue degrades with aging, eventually compromising vision. The absence of effective therapeutic remedies for patients with this disorder has motivated the development of such devices to restore some degree of visual function.
- Biofunctionalization of metallic implants by calcium phosphate coatings
- Article provides a brief summary of state-of-art of surface biofunctionalization on implantable metals by CaP coatings.
- Bioinspired cellular sheath-core electrospun non-woven mesh
- Article using preferential solubility of a polymer in supercritical CO2 to develop a new architecture using biocompatible polymers based on porous core-sheath fiber fabrication technique.
- Bulk Nanostructured Metals and Alloys: Processing, Structure, and Thermal Stability
- Introduction to a special issue of the Journal of Nanomaterials focusing on bulk nanostructured alloys and metals.
- Carbon-based electrocatalysts for advanced energy conversion and storage
- This article presents a critical review on the recent advances in carbon-based metal-free catalysts for fuel cells and metal-air batteries, and discusses the perspectives and challenges in this rapidly developing field of practical significance.
- Carbon Nanomaterials for Optical Absorber Applications
- Article describing optical absorbers based on vertically aligned multi-walled carbon nanotubes (MWCNTs), synthesized using electric-field assisted growth that show an ultra-low reflectance, 100X lower compared to the benchmark, a diffuse metal black - Au-black - from wavelength λ ~ 350 nm – 2500 nm.
- Centimeter Scale Patterned Growth of Vertically Stacked Few Layer Only 2D MoS₂/WS₂ van der Waals Heterostructure
- This article reports the chemical vapor deposition (CVD) growth of large-area (>2 cm²) patterned 2D vdW heterostructures composed of few layer, vertically-stacked molybdenum disulfide and tungsten disulfide.
- Comparing the Knotless Tension Band and the Traditional Stainless Steel Wire Tension Band Fixation for Medial Malleolus Fractures: A Retrospective Clinical Study
- Article describes investigation which sought to to retrospectively compare this traditional wire technique to an innovative knotless tension band (KTB) technique in order to decrease costly complications.
- Composites Containing Bamboo With Different Binders
- This paper discusses the formation of primary chemical bonds between bamboo surface active groups and the binders.
- Composition-dependent apparent activation-energy and sluggish grain-growth in high entropy alloys
- Article discusses experimental results which reveal that the apparent activation-energy for grain-growth in an fcc-based AlxCoCrFeNi high entropy alloy (HEA) system increases from 179 to 486 kJ/mol when the Al content increases from x = 0.1 to 0.3.
- Controlling the length scale and distribution of the ductile phase in metallic glass composites through friction stir processing
- This article demonstrates the refinement and uniform distribution of the crystalline dendritic phase by friction stir processing of titanium based in situ ductile-phase reinforced metallic glass composite.
- Corrosion Behavior of Selectively Laser Melted CoCrFeMnNi High Entropy Alloy
- The article focuses on a study that widens the toolbox to manufacture HEAs with exceptional corrosion resistance by additive manufacturing. CoCrFeMnNi high entropy alloys (HEAs) were additively manufactured (AM) by laser powder bed fusion and their corrosion resistance in 3.5 wt% NaCl solution was studied by potentiodynamic polarization and electrochemical impedance spectroscopy tests. A systematic study of AM CoCrFeMnNi HEAs’ porosity under a wide range of laser processing parameters was conducted and a processing map was constructed to identify the optimal laser processing window for CoCrFeMnNi HEAs.
- Corrosion, Erosion andWear Behavior of Complex Concentrated Alloys: A Review
- This article presents a comprehensive view on corrosion, erosion, and wear behavior of complex concentrated alloys.
- Corrosion of Al0.1CoCrFeNi High Entropy Alloy in a Molten Eutectic Salt
- Article describes study which investigates the hot corrosion behavior of Al0.1CoCrFeNi high entropy alloy (HEA) and Ni-base Alloy 718.
- Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloy
- Article describes the development of bcc-ordered B2 and fcc phases manifested in three different orientation relationships (ORs) in the same microstructure: Kurdjumov–Sachs, Nishiyama–Wasserman and Pitsch.
- Deformation Induced Hierarchical Twinning Coupled with Omega Transformation in a Metastable β-Ti Alloy
- This article looks at hierarchical twinning in metastable body-centered cubic (bcc) β-titanium alloy on tensile deformation.
- Deformation induced intermediate metastable lattice structures facilitate ordered B2 nucleation in a fcc-based high entropy alloy
- This article reports a novel mixed-mode coupled displacive-diffusional transformation resulting in homogeneously distributed intra-granular B2 precipitates within the fcc matrix.
- Detrimental Effects and Prevention of Acidic Electrolytes on Oxygen Reduction Reaction Catalytic Performance of Heteroatom-Doped Graphene Catalysts
- Article describes study in which the density functional theory (DFT) methods were applied to understand the inferior performance of doped graphene in acid.
- Development and application of a novel precession electron diffraction technique to quantify and map deformation structures in highly deformed materials—as applied to ultrafine-grained titanium
- Article describes precession electron diffraction (PED), which makes possible the very accurate and automated quantitative characterization of technically interesting materials that historically have been difficult to analyze due to their dimensions and/or degree of deformation, including specifically ultrafine-grained metallic structures with high dislocation densities.
- Discovery via Integration of Experimentation and Modeling: Three Examples for Titanium Alloys
- This article uses case studies to describe three examples of critical experiments that have been conducted in an integrated fashion with modeling activities for titanium alloys, providing valuable information in an accelerated manner.
- Dynamics of self-reorganization explains passivation of silicate glasses
- This article demonstrates that gel reorganization involving high exchange rate of oxygen and low exchange rate of silicon is the key mechanism accounting for extremely low apparent water diffusivity.
- Effect of Cr Addition on γ-γ' Cobalt-Based Co-Mo-Al-Ta Class of Superalloys: A Combined Experimental and Computational Study
- This article deals with effect of Cr addition (10 at.%) on the partitioning behavior and the consequent effect on mechanical properties for tungsten-free γ-γ' cobalt-based superalloys with base alloy compositions of Co–30Ni–10Al–5Mo–2Ta (2Ta) and Co–30Ni–10Al–5Mo–2Ta–2Ti (2Ta2Ti).
- Effect of Length, Diameter, Chirality, Deformation, and Strain on Contact Thermal Conductance Between Single-Wall Carbon Nanotubes
- This article explores the role of various geometrical and structural (length, diameter, chirality) as well as external (deformation and strain) carbon nanotube (CNT) parameters to estimate total as well as area-normalized thermal conductance across cross-contact interconnects.
- Effect of Microstructure on the Deformation Mechanism of Friction Stir-Processed A₁₀.₁CoCrFeNi High Entropy Alloy
- This article reports grain refinement using friction stir processing and a detailed study on the microstructural evolution at various locations in the processed region using scanning electron microscopy, in addition to the effect of grain refinement on the tensile properties and the underlying deformation mechanisms in both coarse-grained and fine-grained materials.
- Effect of Ni-Content on the Transformation Temperatures in NiTi-20 at. % Zr High Temperature Shape Memory Alloys
- This article investigates the effect of Ni-content on phase transformation behavior of NiTi-20 at. % Zr high temperature shape memory alloy.
- Effect of solution condition on hydroxyapatite formation in evaluating bioactivity of B2O3 containing 45S5 bioactive glasses
- Article describes study investigating the effects of testing solutions and conditions on hydroxyapatite (HAp) formation as a means of in vitro bioactivity evaluation of B2O3 containing 45S5 bioactive glasses.
- Effect of Substrate Support on Dynamic Graphene/Metal Electrical Contacts
- This article investigates the stability of dynamic electrical contacts at a graphene/metal interface using atomic force microscopy (AFM), under static conditions with variable normal loads and under sliding conditions with variable speeds.
- Effect of Thermal Treatment With Water, H₂So₄ and Naoh Aqueous Solution on Color, Cell Wall and Chemical Structure of Poplar Wood
- This article describes a study to observe and quantify the changes of color on wood surface and microstructure of cell walls after the thermal treatment with water, dilute acid and alkali, and to describe the changes of chemical structure on wood surface after those pretreatments.
- Electrochemical and Friction Characteristics of Metallic Glass Composites at the Microstructural Length-scales
- This article evaluates the phase-specific electrochemical and friction characteristics of a Zr-based mtallic glass composite, which comprised roughly of 40% by volume crystalline dendrites in an amorphous matrix.
- Emerging Trend in the Pharmacotherapy of Osteoarthritis
- Article covers the emerging trends of pharmacologic therapies for osteoarthritis (OA) such as traditional OA drugs (acetaminophen, non-steroidal anti-inflammatory drugs (NSAIDs), opioids, serotonin-norepinephrine reuptake inhibitors (SNRIs), intra-articular injections of corticosteroids, and dietary supplements), which are effective in pain relief but not in reversing damage, and are frequently associated with adverse events.
- Enhanced Strength and Ductility in a Friction Stir Processing Engineered Dual Phase High Entropy Alloy
- This article presents a strong and ductile non-equiatomic high-entropy alloy obtained after friction stir processing.
- Enhancing elevated temperature strength of copper containing aluminum alloys by forming L1₂ Al₃Zr precipitates and nucleating θ" precipitates on them
- This article presents a new approach in designing an Al-based alloy through solid state precipitation route.
- Exceptional Friction Mitigation via Subsurface Plastic Shear in Defective Nanocrystalline Ceramics
- This article reports that atomic layer deposition {0002}-textured ZnO films, with nanocolumnar grains and defective sub-stoichiometric structure, exhibit nanocrystalline plasticity and exceptionally low sliding friction and wear.
- Exceptional increase in the creep life of magnesium rare-earth alloys due to localized bond stiffening
- Article describes study in which researchers attribute the 600% increase in creep life in a prototypical Mg–rare earth (RE)–Zn alloy to multiple mechanisms caused by RE–Zn bonding—stabilization of a large volume fraction of strengthening precipitates on slip planes, increase in vacancy diffusion barrier, reduction in activated cross-slip, and enhancement of covalent character and bond strength around Zn solutes along the c-axis of Mg using atomic-scale characterization and first principles calculations.
- Extremely High Strength and Work Hardening Ability in a Metastable High Entropy Alloy
- This article studies the design of a transformation induced plasticity (TRIP) assisted high entropy alloy (HEA) with enhanced strength using two strands of motiviation.
- Facile Photochemical Syntheses of Conjoined Nanotwin Gold-Silver Particles within a Biologically-Benign Chitosan Polymer
- This article developed a simple photochemical method for making conjoined bi-metallic gold-silver (Au/Ag) nanotwins, a new breed of nanoparticles.
- Facile, scalable synthesis of edge-halogenated graphene nanoplatelets as efficient metal-free eletrocatalysts for oxygen reduction reaction
- Article on facile, scalable synthesis of edge-halogenated graphene nanoplatelets as efficient metal-free electrocatalysts for oxygen reduction reaction.
- Feasibility Study of Compaction and Sintering of Commercially Pure Titanium using Friction Stir Processing
- This article explores the possibility of decreasing the number of steps required in the manufacturing of a product using the powder metallurgy technique.
- First-principles study of diffusion and interactions of hydrogen with silicon, phosphorus, and sulfur impurities in nickel
- Article systematically studying the effect of Si, P, and S impurities on the diffusion and binding of an H atom in a face-centered-cubic (FCC) Ni lattice using density functional theory (DFT),
- From mechanics to thermodynamics: A relation between the brittleness and the thermal expansivity for polymers
- Article provides an equation relating the linear isobaric expansivity to the brittleness B for a number of polymers with a large variety of chemical structures and consequently with a large variety of properties.
- Fundamentals of three-dimensional Yb-fiber Nd:YAG laser machining of structural bone
- This article presents a study that aims to understand the fundamental aspects of the laser-bone interaction in three-dimensional laser machining of the bone through an integrated experimental-computational approach.
- Graphene-covered transition metal halide molecules as efficient and durable electrocatalysts for oxygen reduction and evolution reactions
- Author Manuscript version of an article designing a new type of electrocatalysts consisting of transition metal halide molecules covered by graphene sheets. This work provides a theoretical base for rationally designing durable electrocatalysts with excellent catalytic activities.
- Growth of pulsed laser deposited few-layer WS2 films
- This article performs X-ray photoelectron, Raman, and diffraction studies of few-layered pulsed laser deposited WS₂ films as a function of laser fluence and frequency to understand the impact on structure and properties.