A5006404492- Metal and Thin Film Mechanics
- Advanced materials and composites
- Diamond and Carbon-based Materials Research
- Metal Alloys Wear and Properties
- Welding Techniques and Residual Stresses
- Additive Manufacturing Materials and Processes
- Advanced machining processes and optimization
- Boron and Carbon Nanomaterials Research
- Occupational Health and Safety in Workplaces
- Advanced ceramic materials synthesis
- Concrete and Cement Materials Research
- Additive Manufacturing and 3D Printing Technologies
- Fusion materials and technologies
- CCD and CMOS Imaging Sensors
- Plant Surface Properties and Treatments
- Corrosion Behavior and Inhibition
- Radiation Detection and Scintillator Technologies
- Pigment Synthesis and Properties
- Multidisciplinary Research Papers Compilation
- Advanced Surface Polishing Techniques
- Semiconductor materials and devices
- Electrohydrodynamics and Fluid Dynamics
- Electrodeposition and Electroless Coatings
- Orthopaedic implants and arthroplasty
- Tunneling and Rock Mechanics
Escuela Colombiana de Carreras Industriales
2021-2023
Universidad Nacional de Colombia
2017
IK4-Lortek
2015
GAIKER Technology Centre
2014
Centro de Estudios e Investigaciones Técnicas de Gipuzkoa
2009-2012
Powder quality control is essential to obtain parts with suitable mechanical properties in Selective Laser Melting manufacturing technique. One of the most important advantages suchtechnique that it allows an efficient use material, due possibility recycle and reuse un-melted powder. Nevertheless, powder material may change repeated recycling, affecting this way mechanicalbehavior parts. In paper effect on its resulting melted studied via self-developed recycling methodology. The considered...
The success of a functional coating is intrinsically linked to the improvement its surface properties, as it that will be in direct contact with environment and mechanical stresses when material used severe wear, fatigue, or corrosion applications. It has been shown, for example, by increasing factors such hardness increase durability coating/substrate system. Consequently, current research on design development multifunctional coatings engineering within systems must address treatment...
<p>The changes in the microstructure, mechanical properties and residual stresses of AlTiN, AlTiSiN, AlCrN AlCrSiN coatings, has been studied before after annealing at 900 ºC 1100 ºC, using scanning transmission electron microscopy, along with nano-indentation X-ray diffraction techniques. The As-deposited coatings show a columnar structure, crystallite size between 18 nm 28 nm. Despite silicon addition, no effect on refinement was observed.<br />However, addition increases...
TiAlCrSiN thin films were deposited on K20 WC–Co substrates using the co-sputtering method. The silicon content in coatings varied by modifying number of pieces (1, 2, or 3) Cr target. morphology, semi-quantitative chemical composition, and microstructure investigated scanning electron microscopy (SEM), energy disperse spectroscopy (EDS), X-ray diffraction (XRD), respectively. Modified ASTM B611 abrasive wear nano-hardness tests used to evaluate tribological mechanical properties different...
In this work, nanostructured TiAlCrN coatings were deposited on a WC-Co substrate using co-sputtering process varying the silicon composition coatings. The influence of content mechanical, chemical, and tribological performance was studied. hardness increases from 11 to 16 GPa with Si content; also, Young’s modulus 260 295 GPa. H/E ratio, which is measure materials’ ability take strain before deformation, also increased increase in content, suggesting toughness. XPS analysis reveals that...
En este trabajo se da a conocer la oportunidad de impulsar industria colombiana hacia el desarrollo nuevos materiales altas prestaciones fabricados por vías pulvimetalúrgicas (PM) como alternativa los procesos fabricación convencional, generando nuevas necesidades para nacional. El objetivo es describir proceso compuestos, tipo CERMET, formado una fase CERámica cual carburo wolframio (WC) y METálica que cobalto (Co) analizar cambios nivel microestructural utilizando sinterización en vacío....
Abstract Steels are in constant contact with fluids that could generate corrosion regardless the application which this steel is located. AISI-SAE 1045 like steels widely used different applications engineering, even several of these parts made suffers wear processes. The synergy between and phenomena exacerbates detriment some physical properties material conducing it to a failure. A potential alternative avoid issue coat surface an anticorrosive material, among techniques produce coatings,...
Thesuccessofafunctionalcoatingisintrinsicallylinkedtotheimprovementofitssurfacepropertiessinceitisthesurfacethatwillbeindirectcontactwiththeenvironmentandmechanicalstresseswhenthema-terialisusedinseverewear,fatigue,orcorrosionapplications. Ithasbeenshown, for example, by increasing mechanical properties, factors such assurface hardness increase the durability of coating/substrate system.Consequently, current research on design and development...
In the manufacturing of polyethylene terephthalate bottles, steel molds are used for blowing process, these must have low roughness and friction coefficient as well mirror-like aspect. This impacts final product features such transparency demolding. To achieve this, it is necessary to polish mold cavities using abrasives diamond paste or alumina in suspension; however, no further protection against corrosion wear can be achieved along its use. this sense, physical vapor deposition coatings,...