Materials Literature
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BETS-based salts (BETS = bis(ethylenedithio)tetraselenafulvalene) incorporating Fe3+ ions are most interesting candidate systems for the observation of interplay of conductivity and magnetism. Indeed, in λ-(BETS)2FeCl4, conduction electrons in the BETS layers do interact with spins localised on the (FeCl4)− anions. Sy…
A wide variety of novel materials can be prepared through the chemical modification of silica gels with organic and inorganic functionalities. In addition to their use in chromatographic separations, they have been increasingly used as catalysts in liquid phase organic reactions. It is the application of these materia…
High-Temperature Solution crystal growth experiments on Cr3+ doped GdAlO3, are described where the flux and solute stoichiometry was changed for the process optimization to obtain homogeneous and inclusion free larger crystals. Transparent single crystals up to 3.8 cm³ have been grown. The pressure-induced wavelength…
The austenitic stainless steel of orthodontic wires may undergo phase transformation induced by plastic deformation and heat treatment for stress relief. In order to study these changes, arches were made with 0.0215 x 0.027" orthodontic wires and ferromagnetic resonance measurements were performed. The results showed…
It was recently found that the addition of special elements leading to the deviation from the three empirical rules for the achievement of high glass-forming ability causes new mixed structures consisting of the amorphous phase containing nanoscale compound or quasicrystal particles in Zr–Al–Ni–Cu–M (M=Ag, Pd, Au, Pt…
Several contributions of HRTEM on the interface science are reviewed in chronological order. The first contribution of HRTEM is the observation of gold (113)Σ°11 boundary, giving experimental proof of the CSL model. An observation of the asymmetric (112)Σ°3 boundary follows. A SiC grain boundary is effectively assesse…
Silica was extracted from rice hulls by three processing routes, starting with acid treatment followed by burning and milling. The amorphous white silica powder showed a surface area of 260 to 480 m²/g, purity above 99% and average particle size of 2.0 to 0.6 mm. This silica is suitable for the preparation of mullite…
Application of electromagnetic force to materials processing, so called Electromagnetic Processing of Materials (EPM) has been recognized as a cutting edge technology, especially in the fields of advanced materials processing. The background to promote EPM is described. The present state of EPM is given through a brie…
Medium Density Fiberboard (MDF) is a wood-based composite widely employed in several industrial applications, in addition to its use in structures subjected to dynamic loads. Its fatigue-related aspects, however, have been consistently ignored. This work proposes to study fatigue in MDF, including the following factor…
Novel polymer biomaterials, which can be used in contact with blood, are prepared with strong inspiration from the surface structure of biomembrane. That is, the polymers with a phospholipid polar group in the side chain, 2-methacrylooyloxyethyl phosphorylcholine (MPC) polymers were synthesized. The MPC polymers can i…
The interlaminar stresses are confined to a region near the free edge. Therefore, the laminate stacking sequence and the free edge finishing are some of the factors that affect the strength of the laminate and limit its life. The use of molded edges eliminates the need for trimming and machining the laminates edges th…
Two types of duplex stainless steels were deformed by torsion at a temperature range of 900 to 1200 °C and strain rate of 1.0 s-1 and their final microstructures were observed. The austenite volume fraction of steel A (26.5Cr - 4.9Ni - 1.6Mo) is approximately 25% at room temperature, after conventional annealing, whil…
Gallium solubility in the Bi12TiO20 (BTO) matrix was investigated by solid state reaction synthesis and Bi12Ti(1-x)Ga xO20 (BTGaO) single crystals were grown by Top Seeded Solution Growth (TSSG). We determined that it is possible to obtain a continuous solid solution from (x)Bi12TiO20: (1-x)Bi12[Ga0.7Bi0.3]O20 and tha…
Evaluations of the fracture toughness in metal matrix composites (Duralcan reinforced with 15% of Al(2)0(3) and SiC) are presented in this work. The application of Elastic Plastic Fracture Mechanics is discussed and the obtained values are compared with the ones obtained by means of Linear Elastic Fracture Mechanics.…
Tetrathiafulvalene (TTF) and 7,7,8,8-tetracyano-p-quinodimethane (TCNQ) are included in the pores of the zeolite Y framework structure (NaY), each species individually and both together as charge-transfer complexes by absorption from the liquid phase. The positions of these guest molecules are determined by powder dif…
The K and L2,3 absorption edges and core-level binding-energy shifts for pure Co, Cu and Pt and Co–Pt and Cu–Pt alloys are measured to investigate changes in electronic structures of these alloys. Enhancements and depletion of the white lines in the alloys as compared to pure elements were correlated with changes in t…
Seven dental ceramic compositions, including zirconia, glass-infused alumina, polycrystalline alumina, porcelain and three different machinable glass ceramics (MGC's) were tested for edge flaking. The chosen load range encompassed the forces typically associated with machining operations for these materials. The resul…
The effects of laundering and laundering temperatures on surface properties and dimensional stability are investigated for plain flat knit silk, cotton, and polyester fabrics with varying cover factors. The fabrics are subjected to relaxation processes and an extended series of wash and tumble-dry cycles in laundering…
Cyclic deformation experiments by the Mughrabi–Ackermann technique (predeformation with plastic shear-strain amplitude εpl0⁄2=1×10−3 at 530 K till saturation) have been performed on a molybdenum single crystal of ultra-high purity (residual resistivity ratio RRR0≈4×105; angle χ=29° between the plane of maximum resolve…