Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInvestigation of the Structure of Microporous Ti-Si Mixed Oxides by X-ray, UV Reflectance, FT-Raman, and FT-IR SpectroscopiesZhufang Liu and Robert J. DavisCite this: J. Phys. Chem. 1994, 98, 4, 1253–1261Publication Date (Print):January 1, 1994Publication History Published o…
Successive reduction steps of CeO2 particles by hydrogen between 300 and 1070 K have been followed by temperature-programmed reduction (TPR) and in situ magnetic measurements on several samples with different BET surface areas. The nature of the phases present in cerias reduced between 670 and 1270 K was determined by…
A consistent set of pair potentials has been derived empirically by fitting to the experimentally measured lattice properties of a series of binary metal oxides. In contrast to previous strategies, the potential parameters required to reproduce the experimental lattice properties of all the chosen compounds were optim…
The wear resistance of an Fe-12.2wt%Cr-0.84wt%Mo-0.43wt%V-1.44wt%C alloy tool steel after cold treatment at 223K (subzero treatment) and after cryogenic treatment 93K (ultra-subzero treatment) has been investigated. The wear resistance of steels after cryogenic treatment is superior to that after cold treatment. The e…
MIC (microbiologically influenced corrosion) is the deterioration of metal by corrosion processes that occur either directly or indirectly as a result of the activity of living organisms. This handbook explains the interdisciplinary nature of MIC - the roles of microbiology, metallurgy and electro-chemistry are interr…
Temperature-dependent Sellmeier coefficients are necessary to optimize optical design parameters of the optical fiber transmission system. These coefficients are calculated for fused silica (SiO/sub 2/), aluminosilicate, and Vycor glasses for the first time to find the temperature dependence of chromatic dispersion at…
Ceramic processing. General influence of microstructure on ceramic properties. Techniques for characterizing ceramic microstructures. Preparation of ceramic samples for microscopy. Structural oxides I: Al2O3 and mullite. Structural oxides II: ZrO2. Synthetic structural non-oxides. Refractories. Ceramic matrix composit…
Spin-density waves (SDWs) are broken-symmetry ground states of metals, the name referring to the periodic modulation of the spin density with period, ${\ensuremath{\lambda}}_{0}=\frac{\ensuremath{\pi}}{{k}_{F}}$, determined by the Fermi wave vector ${k}_{F}$. The state, originally postulated by Overhauser, has been fo…
We demonstrate a physically-based technique for predicting the drape of a wide variety of woven fabrics. The approach exploits a theoretical model that explicitly represents the microstructure of woven cloth with interacting particles, rather than utilizing a continuum approximation. By testing a cloth sample in a Kaw…
"The surface science of metal oxides." International Materials Reviews, 39(3), p. 125
The modified embedded atom method (MEAM) is an empirical extension of embedded atom method (EAM) that includes angular forces. The MEAM, which has previously been applied to the atoms in the FCC, BCC, and diamond cubic crystal systems, has been extended to the HCP crystal structure. Parameters have been determined for…
Plasma treatment of silicone surfaces is a useful way of increasing wettability to improve adhesion and a first step in producing various organosilicon thin-film composites. Despite numerous earlier studies, there is no consensus on the effect of plasma treatment nor on the mechanism of the subsequent hydrophobic reco…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolylactide stereochemistry: effect on enzymic degradabilityMichael S. Reeve, Stephen P. McCarthy, Milton J. Downey, and Richard A. GrossCite this: Macromolecules 1994, 27, 3, 825–831Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Publis…
Phase behaviour near the order–disorder transition (ODT) of 58 model hydrocarbon diblock copolymers, representing four different systems, is summarized. Six distinct ordered-state microstructures are reported, including hexagonally modulated lamellae (HML), hexagonally perforated layers (HPL) and a bicontinuous cubic…
Suspensions of rod-like cellulose crystallites of axial ratio ≈ 20–40, prepared by acid hydrolysis of natural cellulose fibres with sulphuric acid, give stable ordered fluids that display well-formed textures and disclinations characteristic of chiral nematic liquid crystalline phases. The critical volume fraction for…
Preface. 0: How to use this book. 1: Introduction. 2: Basic group theory: definitions and formulae. 3: Parametrization of symmetry operations. 4: Symmetry operations: notation and properties. 5: Notation for point groups, single and double. 6: Derivation of the proper and improper point groups. 7: Direct product, semi…
Dendritic structures are the predominant microstructural constituents of solidified alloys. The microstructural scales of dendrites, such as primary and secondary arm spacings, control the segregation pattern that largely determines the properties of the material. Within the past decade significant developments in und…
Crystal Chemistry of Mullite Phase Equilibria of Mullite Mullite Synthesis Mullite Processing Properties of Mullite Ceramics Industrial Use of Mullite.
Resistivity, thermopower, and Hall-effect measurements on large single crystals of the anatase form of TiO2 all indicate high mobility n-type carriers that are produced by thermal excitation from a density of ∼1018 cm−3 putatively present shallow donor states. The decrease of the mobility with increasing temperature i…
The split Hopkinson pressure bar (SHPB) is being widely used to determine the dynamic compressive strength of ceramics and ceramic composites. However, extreme caution needs to be exercised while testing these highstrength ceramics at high strain rates. The highest strain rate at which ceramics can be tested using an…