Studies of Nanocrystalline SnO2 Doped with Titanium (Ti), Yttrium (Y
... analysis, flat–panel displays, illumination, optical and infrared lasers and many more [2]. Currently, here in South Africa, nanomaterials are being investigated for future water purification and sensing. The metal-oxide nanocrystalline materials like tin dioxide (SnO2) are currently of considerable ...
... analysis, flat–panel displays, illumination, optical and infrared lasers and many more [2]. Currently, here in South Africa, nanomaterials are being investigated for future water purification and sensing. The metal-oxide nanocrystalline materials like tin dioxide (SnO2) are currently of considerable ...
structural implications of ultra-high performance fibre
... demonstrated that pre-peak behaviour and bending strength are mainly governed by multimicrocracking. The propagation of the macrocrack provides only a minor additional contribution to bending strength, but, in the case of thin beams, plays an important role in providing ductility in bending. Theoret ...
... demonstrated that pre-peak behaviour and bending strength are mainly governed by multimicrocracking. The propagation of the macrocrack provides only a minor additional contribution to bending strength, but, in the case of thin beams, plays an important role in providing ductility in bending. Theoret ...
187457_187457 - espace@Curtin
... have been investigated with respect to their thermal decomposition properties, their crystalline structure and mechanism of H-evolution.20-24 In AMBs, the ammonia is coordinated with the metal cation of borohydrides, which is similar to the ammine metal salts. 25 The distinguished performance of AMB ...
... have been investigated with respect to their thermal decomposition properties, their crystalline structure and mechanism of H-evolution.20-24 In AMBs, the ammonia is coordinated with the metal cation of borohydrides, which is similar to the ammine metal salts. 25 The distinguished performance of AMB ...
Structure and Mechanical Properties of Fe-Mn Alloys
... Materials for automobile applications need both the high strength and good ductility. A combination of these beneficial mechanical properties requires sustained high strain hardening rate throughout the course of plasticity. Fe-Mn alloys are a good example of demonstrating such exceptional mechanical ...
... Materials for automobile applications need both the high strength and good ductility. A combination of these beneficial mechanical properties requires sustained high strain hardening rate throughout the course of plasticity. Fe-Mn alloys are a good example of demonstrating such exceptional mechanical ...
Hydrazine Borane and Hydrazinidoboranes as Chemical Hydrogen
... 12.5 ppm, preceded by a shoulder at around 10 ppm. This is typical of the presence, in equilibrium, of the base tetrahydroxyborate anion B(OH)4− and the acid counterpart boric acid B(OH)3 [39]. Furthermore, in the hydrolysis conditions, the anhydrous borate anion BO2− cannot exist, the hydrated form ...
... 12.5 ppm, preceded by a shoulder at around 10 ppm. This is typical of the presence, in equilibrium, of the base tetrahydroxyborate anion B(OH)4− and the acid counterpart boric acid B(OH)3 [39]. Furthermore, in the hydrolysis conditions, the anhydrous borate anion BO2− cannot exist, the hydrated form ...
PDF 1095 KB
... energy consumption for liquidation substantial. Alternatively, hydrogen can be stored as a compressed gas under B35 MPa at room temperature with 15 g H2 per L. However, such an approach may not be cost effective because the resulting product will have a low energy density, and there are some safety i ...
... energy consumption for liquidation substantial. Alternatively, hydrogen can be stored as a compressed gas under B35 MPa at room temperature with 15 g H2 per L. However, such an approach may not be cost effective because the resulting product will have a low energy density, and there are some safety i ...
The Effects of Misorientation Angle and Impurities on Grain
... Polycrystalline solids are not perfectly arranged and contain various types of defects. Point defects usually refer to vacancies, where an atom is missing but the lattice sites are not affected. Line defects are dislocations, which are categorized into two types: edge dislocations and screw dislocat ...
... Polycrystalline solids are not perfectly arranged and contain various types of defects. Point defects usually refer to vacancies, where an atom is missing but the lattice sites are not affected. Line defects are dislocations, which are categorized into two types: edge dislocations and screw dislocat ...
Ab initio modelling of mechanical and elastic properties of solids
... on the basis of density functional theory (DFT) by applying first-principles or ab initio techniques. Mechanical properties of materials are of crucial importance for technological applications. How a material breaks, is -however- still not well understood in many aspects. The results of the thesis ...
... on the basis of density functional theory (DFT) by applying first-principles or ab initio techniques. Mechanical properties of materials are of crucial importance for technological applications. How a material breaks, is -however- still not well understood in many aspects. The results of the thesis ...
Introduction to Neutron Scattering
... Figure 2.1 illustrates just how easily neutrons penetrate various materials compared with x-rays or electrons. Like so many other things in life, the neutron’s penetrating power is a double-edged sword. On the plus side, the neutron can penetrate deep within a sample even if it first has to pass thr ...
... Figure 2.1 illustrates just how easily neutrons penetrate various materials compared with x-rays or electrons. Like so many other things in life, the neutron’s penetrating power is a double-edged sword. On the plus side, the neutron can penetrate deep within a sample even if it first has to pass thr ...
Aluminum Borohydride Complex with
... example, a series of MBAs, including LiBH4·NH3,20,21 Mg(BH4)2·2NH3,22 and Al(BH4)3·nNH3,23 have been synthesized and studied as potential hydrogen storage materials. In these examples, compounds of Al−B−N−H systems are considered as one of the promising materials in terms of dehydrogenation properti ...
... example, a series of MBAs, including LiBH4·NH3,20,21 Mg(BH4)2·2NH3,22 and Al(BH4)3·nNH3,23 have been synthesized and studied as potential hydrogen storage materials. In these examples, compounds of Al−B−N−H systems are considered as one of the promising materials in terms of dehydrogenation properti ...
Growth and characterization of pure and disodium hydrogen
... strong absorption peak near the wavelength of 236 nm in pure KDP crystal. Whereas in DSHP mixed with KDP crystal the absorption range is shifted towards the lower wavelength side around 203 nm. The change in the cutoff wavelength is due to the addition of disodium hydrogen phosphate which is of diff ...
... strong absorption peak near the wavelength of 236 nm in pure KDP crystal. Whereas in DSHP mixed with KDP crystal the absorption range is shifted towards the lower wavelength side around 203 nm. The change in the cutoff wavelength is due to the addition of disodium hydrogen phosphate which is of diff ...
Neutron Scattering—A Non-destructive Microscope for Seeing
... or more for X-rays. Figure 2.1 illustrates just how easily neutrons penetrate various materials compared with X-rays or electrons. Like so many other things in life, the neutron’s penetrating power is a doubleedged sword. On the plus side, the neutron can penetrate deep within a sample even if it fi ...
... or more for X-rays. Figure 2.1 illustrates just how easily neutrons penetrate various materials compared with X-rays or electrons. Like so many other things in life, the neutron’s penetrating power is a doubleedged sword. On the plus side, the neutron can penetrate deep within a sample even if it fi ...
high strain rate behaviour of woven composite
... The thesis centres on the dynamic behaviour of woven composite materials. The increase in the use of these materials in the aerospace industry demands a reliable constitutive damage model to predict their response under high strain rate loading. The current available models do not include rate effec ...
... The thesis centres on the dynamic behaviour of woven composite materials. The increase in the use of these materials in the aerospace industry demands a reliable constitutive damage model to predict their response under high strain rate loading. The current available models do not include rate effec ...
CE 303-121- lecture 17
... • Bituminous material (or bitumen) is a solid, semisolid, or viscous cementitious material (i.e., binder) natural or manufactured, and composed of “hydrocarbons” • Bitumen are usually fairly hard at normal temperatures. When heated, they soften and flow. • Bitumens possess a number of properties tha ...
... • Bituminous material (or bitumen) is a solid, semisolid, or viscous cementitious material (i.e., binder) natural or manufactured, and composed of “hydrocarbons” • Bitumen are usually fairly hard at normal temperatures. When heated, they soften and flow. • Bitumens possess a number of properties tha ...
Revisit and insight into the dilemma of strong and brittle materials
... tain full understanding and controlling fracture phenomena occurring in real materials world. The control of fracture is the ultimate goal of fracture research, with much expectation of its beneficial applications. Despite current fundamental knowledge of microstructure-related properties of engineer ...
... tain full understanding and controlling fracture phenomena occurring in real materials world. The control of fracture is the ultimate goal of fracture research, with much expectation of its beneficial applications. Despite current fundamental knowledge of microstructure-related properties of engineer ...
Prediction of stress-strain relationships in low
... internal structure of the metals while others are not; these structure sensitive properties include mechanical strength, elasticity, hysteresis and ductility (1). These properties are changed by work-hardening, which is the result of straining part of the metal into the plastic range. ...
... internal structure of the metals while others are not; these structure sensitive properties include mechanical strength, elasticity, hysteresis and ductility (1). These properties are changed by work-hardening, which is the result of straining part of the metal into the plastic range. ...
the article
... performance of both doped dielectric and semiconductor disk lasers. Perfect diamond is optically isotropic, and the occurrence of birefringence is a result of the photoelastic effect: the change of refractive index caused by strain originating from defects such as ...
... performance of both doped dielectric and semiconductor disk lasers. Perfect diamond is optically isotropic, and the occurrence of birefringence is a result of the photoelastic effect: the change of refractive index caused by strain originating from defects such as ...
Dynamic propagation of a macrocrack interacting with parallel small
... coalescence. Another promising approach for fracture modelling is lattice methods which represent a medium as a connection of interacting nodes or particles [9–13]. In this study, it is shown that using a new continuum mechanics formulation, peridynamics, as an alternative method, it is possible to ...
... coalescence. Another promising approach for fracture modelling is lattice methods which represent a medium as a connection of interacting nodes or particles [9–13]. In this study, it is shown that using a new continuum mechanics formulation, peridynamics, as an alternative method, it is possible to ...
I Ceramic Material Classes - Wiley-VCH
... Ceramic oxides represent the most extensive group of ceramic materials produced today. Traditionally, but rather artificially, the oxide ceramics are divided into traditional and advanced groups. The traditional ceramics include mostly silica-based products prepared from natural raw materials ( ...
... Ceramic oxides represent the most extensive group of ceramic materials produced today. Traditionally, but rather artificially, the oxide ceramics are divided into traditional and advanced groups. The traditional ceramics include mostly silica-based products prepared from natural raw materials ( ...
Characterization and Modeling of Pores and Surfaces in - J
... system is a key characteristic linking processing, structure, and properties, and is therefore an appropriate focus for modeling efforts. In this paper, we will specifically discuss new approaches to modeling the changes to the pore system with time under different conditions (Section 5.3), and to m ...
... system is a key characteristic linking processing, structure, and properties, and is therefore an appropriate focus for modeling efforts. In this paper, we will specifically discuss new approaches to modeling the changes to the pore system with time under different conditions (Section 5.3), and to m ...
Dislocation density evolution upon plastic deformation of Al-Pd
... kinetic equation, which describes the evolution of the dislocation density during deformation. Numerical values for the dislocation multiplication constant and the annihilation rate for icosahedral Al± Pd± Mn are presented. ...
... kinetic equation, which describes the evolution of the dislocation density during deformation. Numerical values for the dislocation multiplication constant and the annihilation rate for icosahedral Al± Pd± Mn are presented. ...
Dislocations
... be around E/10, E being the modulus of elasticity This strength is a function of the cohesive forces between the atoms Experimental values lie between 10 and 1000 times below this value These values are a due to very small flaws occurring throughout the material referred to as stress raisers ...
... be around E/10, E being the modulus of elasticity This strength is a function of the cohesive forces between the atoms Experimental values lie between 10 and 1000 times below this value These values are a due to very small flaws occurring throughout the material referred to as stress raisers ...
Surface Structure/Property Relationship for (001) Surface of Magnetite
... because of its great application in catalyst and technology development. These useful properties are related to the coexistence and coupling of several degrees of freedom, including charge, lattice, orbital and spin. The interaction between Fe3O4 and hydrogen is one of the most important issues, whi ...
... because of its great application in catalyst and technology development. These useful properties are related to the coexistence and coupling of several degrees of freedom, including charge, lattice, orbital and spin. The interaction between Fe3O4 and hydrogen is one of the most important issues, whi ...
FASCICLE II, SUPPLEMENT, YEAR II (XXXI) 2008
... dose per fraction and number of fractions. Biollogically-effective dose (BED) represents the total dose that would be required in very small dose fractions to produce a particular effect, as indicated by the linear-quadratic (LQ) equation. When multiple fractions per day are used, the repair (or mor ...
... dose per fraction and number of fractions. Biollogically-effective dose (BED) represents the total dose that would be required in very small dose fractions to produce a particular effect, as indicated by the linear-quadratic (LQ) equation. When multiple fractions per day are used, the repair (or mor ...
Journal - AIMS Lab
... e., low C/S ratio, long silica chains are present. In this C/S regime, the structure of the gel is similar to tobermorite.5,7,8 As the C/S ratio increases, silica dimmers prevail in the resultant gel. Pellenq et al.13 proposed a consistent CSH model, namely cCSH model, with silica chains of finite s ...
... e., low C/S ratio, long silica chains are present. In this C/S regime, the structure of the gel is similar to tobermorite.5,7,8 As the C/S ratio increases, silica dimmers prevail in the resultant gel. Pellenq et al.13 proposed a consistent CSH model, namely cCSH model, with silica chains of finite s ...