Materials Engineering (MatEng): Recent submissions
Now showing items 1-20 of 358
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Polysaccharide-based investigations into the surface chemistry of some sulphide and hydrophobic minerals and processing of a complex sulphide ore
The gradual depletion of high grade ores and the fine dissemination of values, together with the complex mineralogy of lean grade samples, has made it imperative to develop innovative technologies for their processing. The ... -
Kinetics of size reduction and associated wear of grinding media
Ball milling is an important step in mineral processing to liberate the locked minerals from ore. During milling, the media undergo extensive wear due to abrasion and impact. Corrosion acts synergistically to increase the ... -
Effect of texture grain size and carbide precipitation of the crevice corrosion behaviour of oustenitic stainless steels in aqueous medium
Crevice corrosion is a localized form of attack that occurs at shielded areas on metal surfaces exposed to certain specific corrosive environments. This type of corrosion occurs very frequently in engineering structures, ... -
Chemical vapor deposition of titanium carbide from titanium tetrachloride hydrogen gas mixtures
Abstract not available -
Studies on the chloridisation of low grade ferruginous manganese ores
Hydrochlorination was attempted as a means of chemically beneficiating the low?grade manganese ores which are not amenable to upgradation by normal methods of ore dressing. The samples chosen for the present study were ... -
Studies on some fatty acid collectors in the flotation of beach sand minerals of travancore thesis
The beach sands of Travancore contain ilmenite, rutile, monazite, zircon, and garnet among others. The present investigations were undertaken not only with a view to find out the effect of some unsaturated and saturated ... -
Effect of trade addition of tin on the isothermal and di- isothermal geing characteristic of anlminium- magnesium 0.26 silicon alloy
Pre?precipitation and precipitation processes in quenched supersaturated solid solutions of age?hardenable alloy systems are known to be vacancy?aided phenomena. The clustering kinetics would be significantly altered when ... -
Bioleaching of a lean grade chalcopyrite ore : studies on amenability and mechanisms
The role of bacteria in the leaching of mineral sulphides is discussed with respect to Thiobacillus ferrooxidans. Column leaching studies were carried out on Malanjkhand lean?grade chalcopyrite ore samples using Thiobacillus ... -
Benificiation Studies on Low Grade Tungsten Dposits of Degana, Rajasthan
The unique high?temperature properties of tungsten and its alloys are responsible for increased demand for this metal, particularly in the forms of carbide and pure metal. It is also an important strategic material for ... -
Materials to Module: Engineering Strategies for Tin-Based Perovskite Solar Cells via Interface Optimisation, Crystal Growth, Composition Tuning, and Laser Processing
Tin-based perovskites (TBPS) have emerged as a promising non-toxic alternative to lead-based perovskites for photovoltaic and optoelectronic applications, owing to their suitable bandgap (~1.2–1.4 eV), strong absorption, ... -
Core-Shell Precipitates in Ternary Alloys: A Phase-Field Study
Since the discovery of age hardening, a large number of alloys have been produced that exploit the presence of one or more precipitate phases in the microstructure for strength enhancement. In recent decades, alloys with ... -
Studies on drop formation at conical and capillary tips
Despite the role of drops being recognised in many metallurgical processes, surprisingly no significant progress has been made in this area. An understanding of the drop formation phenomenon is expected to give a better ... -
Electron spectroscopic studies of surface segregation and oxidation of Cu and Ni based alloys and low temperature preparation and characterization of intermetallics base on the system Fe-W-Mo
An overview of the surface studies on alloys reported in the literature and the objectives of the present investigationbave been presented in this chapter. Preparation and characterization of the various alloys studied ... -
Physical and mathematical modelling of boron carbide manufacturing process
Boron carbide is produced in a heat?resistance furnace using boric oxide and petroleum coke as the raw materials. In this process, a large current is passed through the graphite rod located at the center of the cylindrical ... -
Corrosion and related electrochemical studies on ziroconium (in nitrate melts, nitrats fluoride melts and aqueous nitrate solutions)
The thesis embodies the results of the investigations on the corrosion of zirconium in nitrate melts. The predicted thermodynamic behaviour of zirconium in 2-component NaNO?-KNO? eutectic melts based on E-pO diagrams ... -
Thermodynamic studies on the systems Ln-Fe-O (Ln = Nd, Sm, Dy)
Ternary oxides in the systems Ln–Fe–O (Ln = Nd, Sm, Dy) have been prepared by the citrate–nitrate route and characterised by X?ray diffraction analysis. The particle sizes of the ternary compounds were estimated to be in ... -
Overcoming Processing Constraints in Organic Electronics: Crosslinking Strategies and Ultra-Thin Film Integration
The evolution of modern electronics has been dominated by Si-based technologies for many years, as they have enabled reliable, powerful, and compact devices. While the silicon-based technologies are powerful, they face ... -
Analytical and numerical solutions of some moving boundary problems. vol. 2
This thesis presents analytical and numerical solutions of some Moving Boundary Problems (MBP’s), especially those pertaining to solidification/melting. Since solidification problems are mathematically analogous to melting ... -
Propagation of a curved weak shock front
Waves are ubiquitous in the physical world. The study of general laws that govern their propagation is, therefore, important. In particular, nonlinear hyperbolic waves are frequently encountered, for some of which the ...