A5111654140- Advanced ceramic materials synthesis
- Advanced materials and composites
- Electrophoretic Deposition in Materials Science
- Metal and Thin Film Mechanics
- Aluminum Alloys Composites Properties
- Powder Metallurgy Techniques and Materials
- Intermetallics and Advanced Alloy Properties
- Nuclear materials and radiation effects
- Advanced Surface Polishing Techniques
- TiO2 Photocatalysis and Solar Cells
- MXene and MAX Phase Materials
- Additive Manufacturing and 3D Printing Technologies
- Layered Double Hydroxides Synthesis and Applications
- Metal Alloys Wear and Properties
- Advanced machining processes and optimization
- Material Properties and Applications
- Aluminum Alloy Microstructure Properties
- Ferroelectric and Piezoelectric Materials
- Metallurgical Processes and Thermodynamics
- Injection Molding Process and Properties
- Magnesium Alloys: Properties and Applications
- Catalysis and Hydrodesulfurization Studies
- High-Temperature Coating Behaviors
- Semiconductor materials and devices
- Nuclear Materials and Properties
KU Leuven
2010-2021
University of the Witwatersrand
2011
American Ceramic Society
1999-2010
Russian Academy of Sciences
2010
A.V. Shubnikov Institute of Crystallography
2010
Catholic University of America
2008
Laboratoire d’Electrochimie et de Physico-chimie des Matériaux et des Interfaces
2006
National Institute of Materials Physics
2005
Indian Institute of Technology Kanpur
2003
IMEC
1989
This paper presents a new apparatus to measure elastic properties and internal friction of materials. The excites the test specimen by light mechanical impact (impulse excitation) performs software-based analysis resulting vibration. resonant frequencies fr object are determined and, in case isotropic regular shaped specimens, moduli calculated. value (Q−1) is for each as Q−1=k/(πfr) with k exponential decay parameter vibration component frequency fr. A furnace was designed equipped...
Shaped metal deposition is a novel technique to build near net-shape components layer by tungsten inert gas welding. Especially for complex shapes and small quantities, this can significantly lower the production cost of reducing buy-to-fly ratio lead time production, diminishing final machining preventing scrap. Tensile testing Ti-6Al-4V fabricated shaped shows that mechanical properties are competitive material conventional techniques. The ultimate tensile strength between 936 1014 MPa,...
High temperature flexural strength of ZrB 2 –20 vol% SiC ceramics ( ZS ) up to 1600°C in high purity argon atmosphere was significantly improved by adding 5 WC , but degraded when ZrC added. –5 ceramic ZSW has a very (mean ± SD) 675 33 MPa at 1600°C, and also an elastic transgranular fracture mode observed. According the analysis modes crack origins ceramics, improvement above 1000°C attributed removal oxide impurities from grain boundaries.
High‐purity zirconium diboride (ZrB 2 ) powders with submicrometer particle size were synthesized by borothermal reduction of nanometric ZrO in vacuum. The reaction process was experimentally and thermodynamically assessed. B O 3 identified as a possible intermediate product. completely converted to ZrB when thermally treated at 1000°C for h vacuum, but the removal residual boron‐related species required temperature above 1500°C. obtained 1000°–1200°C showed faceted morphology, whereas those...
A component prepared by shaped metal deposition (SMD) using 300M steel wire is studied to reveal structure and material properties. The exhibits a bainitic microstructure changing from distinct sheaves homogenous top bottom. This change in reflected step-like increase of the volume fraction austenite towards bottom component, decrease microhardness. certain deviation general morphology bainite appears at very caused influence base plate. Tensile tests show high ultimate tensile strength...
Electrophoretic deposition (EPD) is a colloidal production process developed in the early 20th century. Industrial scale EPD for of electronic components and phosphorescent screens form cataphoretic painting has known some success. Despite its limited practical applications, inherent versatility never ceased to fuel research into this technique. One major drives was render method more environmentally friendly by enabling from aqueous suspensions. particular route, suggested circumvent...
The purpose of this study was to compare short term in vitro and vivo biodegradation studies with low purity Mg (> 99.94 %), Mg-10Gd Mg-2Ag designed for biodegradable implant applications.Three testing conditions were applied, using (i) phosphate buffered saline (PBS), (ii) Hank's balanced salt solution (HBSS) (iii) Dulbecco's modified eagle medium (DMEM) 5 % CO 2 under sterile conditions.Gas evolution mass loss (ML) assessed, as well the degradation layer, by elemental mapping scanning...
High-Tc superconducting oxides have been prepared by a liquid-mix technique using etylene-diamine-tetra-acetic acid (EDTA) as complexing agent. Bi-Sr-Ca-Cu and Y-Ba-Cu were made this giving better compositional homogeneity, more precise control of the cation stoichiometry decreased firing temperature compared to conventional material produced solid-state reaction. This extends amorphous citrate process those systems where no complex exists. EDTA binds with most metallic elements periodic...
Abstract Shaped metal deposition is an innovative technology, which creates near-net shaped components by weld and saves time material due to the absence of further machining. For Ti alloys this a big advantage, since these are difficult shape also very expensive. sensitive thermal history introduces for each welding step additional temperature gradient leading different microstructures in regions. Regions were single β phase field during last show fine needle like microstructure, while...