A5005763793- Corrosion Behavior and Inhibition
- Magnesium Alloys: Properties and Applications
- Aluminum Alloys Composites Properties
- Metal and Thin Film Mechanics
- High-Temperature Coating Behaviors
- Dental Implant Techniques and Outcomes
- Anodic Oxide Films and Nanostructures
- Dental materials and restorations
- Layered Double Hydroxides Synthesis and Applications
- Hydrogen Storage and Materials
- Material Selection and Properties
- Advanced Machining and Optimization Techniques
- Catalysis and Oxidation Reactions
- Catalytic Processes in Materials Science
- Advanced ceramic materials synthesis
- Aluminum Alloy Microstructure Properties
- Metallurgy and Cultural Artifacts
- Electrodeposition and Electroless Coatings
- Hydrogen embrittlement and corrosion behaviors in metals
- Bone Tissue Engineering Materials
- Microstructure and Mechanical Properties of Steels
- Orthopaedic implants and arthroplasty
- Silicone and Siloxane Chemistry
- Surface Treatment and Coatings
Universidad de San Buenaventura, Bogota
2019-2021
Industrial University of Santander
2013-2017
Centro de Investigación en Materiales Avanzados
2002
The present study aims to develop multilayer barrier-bioactive hybrid sol-gel coatings from a mixture of the silane precursors tetraethylorthosilicate (TEOS) and glycidoxypropyltriethoxysilane (GPTMS) deposited on Elektron 21 magnesium alloy. purpose inner layer (barrier coating) was provide corrosion protection alloy, whereas outer (bioactive doped with different Ca Mg contents produce bioactive material. were characterised using scanning electron microscopy (SEM) their behaviour evaluated...
The aim of the present work was synthesis biodegradable MgF2 coatings by chemical conversion on commercial Elektron 21 and AZ91D magnesium alloys, in aqueous HF solutions for different concentrations temperatures. composition morphology were analyzed scanning electron microscopy (SEM-EDX) X-ray diffraction (XRD). On other hand, their corrosion behavior evaluated gravimetric electrochemical measurements Hank's solution at 37°C immersion times. experimental results revealed that produced which...
In the present work hybrid sol-gel coatings were synthesized on different magnesium alloys with potential interest in fabrication of orthopaedic implants. Hybrid sols obtained from a mixture inorganic precursor tetraethoxysilane (TEOS) and organic 3-glycidoxypropyltrimethoxysilane (GPTMS), employing ethanol as solvent acetic acid catalyst. The characterization was performed using pH measurements, rheological tests infrared spectroscopy (FTIR) for aging times. On other hand, characterized by...
The main objective of the present investigation was to evaluate employment a fluoride-based pretreatment WE54 magnesium alloy on protection-degradation mechanism TEOS (tetraethylorthosilicate)/GPTMS (glycidoxypropyltriethoxysilane) hybrid sol–gel coatings when in contact with saline environment, giving special attention influence time. experimental results evidenced that long times favoured formation hydroxyfluoride layer higher F/O ratio, which improved corrosion performance and alloy....
The present work shows some preliminary results related to the synthesis, characterization and corrosion evaluation of different hybrid sol-gel coatings applied on WE54-AE magnesium alloy attending two experimental variables, i.e. precursors ratio aging time, which may affect quality electrochemical properties resultant. confirmed that, under specific conditions, it was possible obtain homogeneous uniform, porous with good resistance that also permit accommodate inhibitors.
In the present work multilayer hybrid sol-gel coatings were synthesized on AISI 316L austenitic stainless steel employed in fabrication of orthopaedic implants. Hybrid sols obtained from a mixture inorganic precursor, TEOS, and organic, GPTMS, using ethanol as solvent, acetic acid catalyst. The characterization was performed pH measurements, rheological tests infrared spectroscopy (FTIR) for different ageing times. On other hand, characterized by scanning electron microscopy (SEM), while...
El presente trabajo tuvo como objetivo sintetizar, caracterizar y evaluar la resistencia a corrosión de recubrimientos híbridos sol-gel base TEOS/MPS, sintetizados sobre aleación AA2050-T8 (Al-Cu-Li) bajo diferentes condiciones experimentales polimerización, tales solvente tiempo envejecimiento, así relaciones molares los precursores inorgánico tetraetoxisilano (TEOS) e híbrido 3-metacriloxipropiltrimetoxisilano (MPS). Se monitoreó evolución soles durante el proceso envejecimiento mediante...
Resumen-El objetivo del presente trabajo fue sintetizar y caracterizar recubrimientos híbridos sol-gel base sílice dopados con inhibidores de corrosión sobre la aleación magnesio WE54-AE.Se establecieron como variables síntesis el tiempo envejecimiento (hasta 24 horas) proporción agente entrecruzamiento 3-aminopropiltrietoxisilano, APTES.El inhibidor
Síntesis y evaluación de recubrimientos base fl uoruro empleando fuentes alternativas al HF sobre la aleación Elektron 21 para fabricación implantes ortopédicos biodegradables.rev.ion.2015;28(2):7-21.Síntesis biodegradables Synthesis and evaluation of uoride-based coatings using alternative sources on the magnesium alloy for