A5022061264- Lubricants and Their Additives
- Metal and Thin Film Mechanics
- Diamond and Carbon-based Materials Research
- Semiconductor materials and devices
- Force Microscopy Techniques and Applications
- Bone Tissue Engineering Materials
- Tribology and Wear Analysis
- Advanced materials and composites
- Modeling, Simulation, and Optimization
- Copper Interconnects and Reliability
- Dental materials and restorations
- Ion-surface interactions and analysis
- Vehicle emissions and performance
- Surface Roughness and Optical Measurements
- Advanced Battery Materials and Technologies
- Tribology and Lubrication Engineering
- ZnO doping and properties
- Ga2O3 and related materials
- Transition Metal Oxide Nanomaterials
- Fuel Cells and Related Materials
- Corrosion Behavior and Inhibition
- Advancements in Battery Materials
- Silicon and Solar Cell Technologies
- Advanced Materials Characterization Techniques
- Titanium Alloys Microstructure and Properties
Argonne National Laboratory
2014-2020
Universidad Nacional Autónoma de México
2009-2020
Lithium metal anodes can largely enhance the energy density of rechargeable batteries because high theoretical capacity and negative potential. However, problem lithium dendrite formation low Coulombic efficiency (CE) during electrochemical cycling must be solved before widely deployed. Herein, a new atomic layer deposition (ALD) chemistry to realize low-temperature synthesis homogeneous stoichiometric fluoride (LiF) is reported, which then for first time, as far we know, deposited directly...
The effects of oxidation on wear carbon/steel tribological interfaces were studied. When mechanical was small, the behavior hydrogenated diamond-like carbon (H-DLC) and stainless steel (SS) sliding interface varied depending nature oxidizing environment. In dry air or oxygen, both H-DLC SS wore readily. debris did not form iron oxide in oxygen. humid nitrogen, however, diminished with increasing humidity, surface showed mild accumulated around contact region. These results revealed that...
Tribochemistry involves chemical reactions occurring at sliding contact interfaces in the presence of gaseous and/or liquid media. It often leads to formation a solid reaction film (also termed boundary film) which controls friction and wear hence efficiency reliability moving mechanical systems (such as engines). Here we demonstrate tribochemical conversion methane graphene, nano-onion, disordered carbons on surfaces Ni-, Cu-, CuNi-containing VN coatings atmospheric pressure room...
Despite growing environmental concern, combustion engines are projected to stay the main technology of transportation for many years, so will unpopular S- and P- containing additives in lubricating oils. Therefore, it is essential maximize efficiency minimize harmful impacts these meantime. Coatings based on Mo W hold great promise as they can chemically interact with S-bearing form low friction tribofilms like MoS2 particular WS2. Here we highlight reaction pathways involving first...
Polyalkylene glycols (PAG) have been explored as a possible base stock for engine oil formulation. The friction, wear, and load-carrying capacity of five different PAG chemistries were evaluated either or formulated oils in pure sliding sliding-rolling conditions using various laboratory bench test rigs operating under boundary mixed lubrication regimes. results compared against GF-5 SAE 5W-20 mineral-based oil. wear surfaces also characterized surface-sensitive techniques analysis...
The electrical and optical properties of TaxSiyNz thin films deposited by reactive magnetron sputtering from individual Ta Si targets were studied in order to investigate the effects nitrogen silicon contents on both their correlation film microstructure. Three sets fcc-TaxSiyNz prepared: sub-stoichiometric TaxSiyN0.44, nearly stoichiometric TaxSiyN0.5, over-stoichiometric TaxSiyN0.56. investigated near-normal-incidence reflectivity ellipsometric measurements energy range 0.375 eV 6.8 eV,...