Materials Literature
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This chapter contains sections titled: Activated Carbon Adsorption Activated Carbon Reactors in Water and Wastewater Treatment Activated Carbon Regeneration and Reactivation
This chapter contains sections titled: Theory of Brittle Fracture Cracking in Brittle Materials Strength Variability of Ceramics Physics of the Fracture of Brittle Solids Basic Mechanical Properties Toughening Mechanisms References
Polycrystalline Cubic Boron Nitride (PCBN) is a super-hard material, which is used in some of the most demanding material removal operations today. PCBN cutting tools are employed in turning of hardened steels as well as machining of other abrasive and aerospace grade alloys. In these applications the tools are subjec…
The binary mixtures of nematogenic compounds 4-n-pentyl phenyl 4-n′-hexyloxy benzoate (ME6O.5) and 4-cyanophenyl 4-heptyl benzoate (CPHB) show the presence of induced smectic phase. In the present paper we report the phase diagram of the binary system (ME6O.5+CPHB) obtained by polarizing optical microscopy as well as…
The proximity effect in a bilayer consisting of a ferromagnet (FM) and an iron-pnictide superconductor (SC) with antiphase s -wave pairing is first studied by extending Nambu spinor Green's function approach. Due to the opposite signs of the two pair potentials in the SC, the order parameters in the FM and SC regions…
Load-rate sensitivity of material is important in impact and other dynamic loadings. It is assumed that the strain-rate sensitivity is not a material property but comes out naturally from dynamic equilibrium equations. Material is assumed non-linear, similar as used in the microplane model for quasi-brittle materials,…
Li 1+x−y Nb 1−x−3y Ti x+4y O 3 (0.11≤x≤0.33, 0≤y≤0.09) solid solutions in the Li 2 O-Nb 2 O 5 -TiO 2 ternary system are known as M Phase with superstructure. Eu doped Li 1+x−y Nb 1−x−3y Ti x+4y O 3 (LNT) solid solutions were prepared by firing mixed powders at temperatures of 1120 °C for up to 24 hours. The interval o…
The thermal shock behaviour in air and vacuum of three different advanced ceramics is investigated by introducing a new testing method. This thermal shock testing system permits the reproducible setting of defined temperature profiles in thin disks. In order to perform heating - up thermal shock experiments under repr…
The time stability of fused silica is investigated, reporting new data on two flats that were purchased in 1981. It is found that their present shape is no more plane, exhibiting instead a concavity that is compatible with a very slow laminar flow under the action of gravity. The data are examined altogether with thos…
The Mo x V 3−x O 7 /MWNTs nanocomposites were fabricated via a hydrothermal reaction followed by self-assembling process. The nanocomposites were characterized in terms of surface morphology and structure by FESEM, TEM, XRD and XPS analysis, respectively. The electrochemical behaviors of the nanocomposites were invest…
Thin plate structures are common in many industrial products and in particular they can be found as skins in sandwich panels. In order to develop complex FE analysis which involve the damage of these structures, it’s crucial the knowledge of constitutive law and damage criterion of the material they are made. In this…
The fabrication of Portland cement causes numerous problems accompanying the large exhaustion of gas. Even if fly ash, an industrial by-product produced in thermoelectric power plants, is recycled in concrete by partial replacing of cement, more than 50% remains still discharged in marine and ashore landfills and, con…
Advanced ceramic machine components are required in many applications because of their specific material properties like high hardness, resistance to chemicals, corrosion and wear, low specific weight etc. The most suitable shaft-hub connection to ceramics is an interference fit assembly because it is free of geometri…
Impact and fracture toughness of a large number of medium carbon alloy steel specimens have been ascertained using standard ASTM procedures, apart from examining their chemistry, microstructure, cleanliness, tensile behaviour and fracture surfaces. The results indicate that the scatter associated with ductility, impac…
The colors of autumn leaves appear when chlorophyll is broken down, a process assumed to result in certain colorless degradation products. In their Communication on page 10 724 ff., B. Kräutler and co-workers report the analysis of fall leaves of Norway maple, in which the typical catabolites were not present. Instead…
A recent trend in the development of CO2 pipelines is the shift from the predominance of transport of CO2 for enhanced oil recovery (EOR) to the transportation of CO2 as part of the carbon capture and storage (CSS) process for global warming mitigation. Among the processes of capture, transport, and storage, less atte…
Secure and cost effective joining methods are key points for practical applications of plastic pipelines. The morphology and material structure of welded joints are complicated in comparison with the base pipe material. The formation of the weld is highly dependent on both thermal history and stress state. Consequentl…
Smooth, crack free and homogenous CuAlO2 film was produced by chemical solution deposition process via spray pyrolysis technique on a cleaned Si substrate. The precursor solution used was comprised of a mixture of 45.87 mmol Cu(NO3)2.3H2O and 90 mmol Al(NO3)3.9H2O at ratio of Cu:Al = 1.2:1. The precursor solution was…
The railway wheel in long-term running had experienced the wheel damage due to fatigue crack and shelling. The damaged wheel in railway vehicle would cause a poor ride comfort, a rise in the maintenance cost and even fracture of the wheel, which then leads to a tremendous social and economical cost. It is necessary to…
In this paper, we explored the relationship between thermal aging and the residual stresses developed within a thermal barrier coating (TBC) and the underlying thermally grown oxide (TGO). Superalloy model specimens (CMSX4) with a curved geometry designed to simulate key features of turbine blades coated with air plas…