Materials Literature
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Silicon carbide (SiC) is an important material in industry due to its favorable mechanical, thermal, chemical, and electrical properties. While it has been mainly used as an abrasive material in the past, more modern applications like armor and other structural applications, often require densified ceramic bodies. SiC…
The Ph.D. thesis addresses the issues of elastomer seals operating in cold climate areas like Arctic. The work is devoted to a better understanding of low-temperature behaviour of elastomer seals near the glass transition Tg. The main objective of the work is to understand the causes for seal failures in cold environm…
MSc Engineering Sciences (Nuclear Engineering), North-West University, Potchefstroom Campus, 2017
Polymers have important and widespread applications in modern materials due to their excellent formability, chemical stability, light weight and low cost. Their production has increased exponentially over the last 60 years after their introduction to the markets from 1.5 million tons/year in 1950 to 322 million tons p…
Nowadays π-conjugated molecules are widely used as materials for devices in organic and molecular electronics. This is due to the ability of such molecules to conduct electricity. However, π-conjugation leads to molecular rigidness and associated lower solubility, which limits possible applications. Meanwhile, there a…
Solid solutions from the concentration range (0 ≤ x ≤ 1) was employed to grown (1-x)PbMg 1/3 Nb 2/3 O 3 - xPbTiO 3 single crystals using various heat treatment process under lower pressure. Transparent green and yellow colored single crystals of irrespective shapes are obtained. For the fabrication of (1-x)PMN-PT crys…
As a novel fluorescent material, carbon dots (CDs) demonstrate many excellent properties such as low toxicity, high stability and high resistance to photo bleaching. They are very likely to be applied in sensing, bio-imaging, photo catalysis and lighting devices, which require that the CDs can be tuneable in emission…
Co-crystallisation is currently a ‘hot topic’ in pharmaceutical development among other fields. Modification of the physicochemical properties of the parent material by inclusion of a second component within the crystal structure, with the potential to lead to large improvements in useful attributes, being the key rea…
Materials and resources for quantitative analysis and statistical methods.
The forward current-voltage (I-V) characteristics of oxidized Ni-Au and Ni-only Schottky contacts on n-type GaN were measured in the temperature range 160 K-400 K. The Schottky barrier diode whose barrier height (b) and ideality factor () are both bias dependent has been studied as a function of temperature using a te…
The solutions of the three-dimensional problem of the theory of elasticity are given, when on the boundaries of some parallel cylindrical cavities elastic stresses are given in the elastic space, but on the boundaries of other displacements. The solution of the Lame system of equations is obtained by the generalized F…
The purpose of this research is to study the mechanical and physical properties of coconut coir reinforced with polyester matrix composite by differencing their percentage of fibre loading and their coir fibre condition. The characterization of mechanical properties for the composition samples was determined by using…
Bio-composites consisting of poly(lactic acid) or Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) matrix were film stacked with cotton twill fabric in multi layer configuration. The flexural properties of these bio-composites were comparable to the ones of particle boards or engineering woods with the advantage to be ea…
Import 23/08/2017
En los últimos años, en la República Argentina, en la construcción de obras de redes de Media, Alta y Extra Alta Tensión se han introducido requerimientos para el cumplimiento de normas sobre el Impacto Ambiental Electromagnético. Tales instalaciones comprenden ampliaciones de estaciones transformadoras, tanto en sus…
Coronary artery disease is one of the number one killers in the U.S. Current treatment of using CABG surgery has limitations from availability of autologous grafts, and low patency of artificial grafts. Tissue engineered grafts would ideally provide more availability, while also replicating the mechanical properties o…
In recent years, functional window films have gained much interest. These windows films can be used for a wide variety of applications. Some common examples of these applications are UV blocking, window tinting, insulation and shatter resistance. Most of the window films are functionalized by thin layers on a flexible…
Nanocrystalline ITO particles are prepared by Combustion Synthesis. Similarly, the structural and morphological properties for as prepared different ratio of powders to be 9:1 and 5:5 were found. Thermogravimetry analysis shows the liberation of O, H, N and metal particles with respective temperatures and loss of weig…
The choice of corrosion protection system depends on the environment and needed lifetime for the product. The right corrosion protection should be selected in a sustainable point of view, since a well-selected coating system can reduce the environmental and economical impact, by using less and better material. The sys…
Solid oxide fuel cells can offer supply of electrical energy with a high efficiency and based on a wide range of fuels. While natural gas and/or bio methane is a commonly used fuel for combined heat and power supply, liquid fuels such as gasoline, Diesel and alcohols are interesting fuels, especially for remote fuel c…