Materials Engineering (MatEng): Recent submissions
Now showing items 141-160 of 334
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Mapping the Transient Morphologies and Demixing Behavior of Polystyrene/ Poly(vinyl methyl ether) Blend in the Presence of Multiwall Carbon Nanotubes
Multiphasic materials with precise structures are essential in designing materials for applications in various diverse areas like sensors, photovoltaics, porous membranes, etc. The transient morphology developed during ... -
Theoretical and Numerical Study of Microstructure Formation in Multi-component Alloys
The length scale, composition, orientation of the phases in a material constitutes its microstructure. In order to appreciate the whole gamut of microstructures observed in multi-component alloys, an identification of the ... -
Electric Field Driven Structural Transformations in BaTiO3 and Lead Zirconate Titanate (PZT) based Piezoceramics
Ferroelectrics are important class of functional materials that finds application in transducers, actuators, memory devices, electro-optics and position sensing devices. Until recently, the high performance piezoelectrics ... -
Microstructural Evolution of Directionally Solidified Ni-Al-Re/Ru Alloys
Nickel based superalloys are high temperature materials which find application as blade and disc components of jet engines due to their ability to retain their mechanical properties at temperatures close to 0.8 of their ... -
Nano Surface Modifications for Anti-Corrosive and Anti-Biofouling Applications
Microbially Induced Corrosion (MIC) of materials is a major concern of marine industry. Various ferrous and non-ferrous materials used in industry are prone to MIC. Bio-fouling or formation of bio-film on material surface ... -
Dynamic Strain Aging and Creep in near-α Ti Alloy, IMI834
IMI 834 is a near- Ti alloy used in high temperature applications such as compressor discs and blades of aero engines. Titanium alloys including IMI 834 are known to exhibit dynamic strain aging (DSA) over the temperature ... -
Diffusion-Controlled Growth of Phases in Metal-Tin Systems Related to Microelectronics Packaging
(2018-08-28)The electro–mechanical connection between under bump metallization (UBM) and solder in flip–chip bonding is achieved by the formation of brittle intermetallic compounds (IMCs) during the soldering process. These IMCs ... -
Precipitate Growth and Coarsening in Ternary Alloys
(2018-08-20)We have studied precipitate growth and coarsening in ternary alloys using two different phase held models. The first one is a ternary extension of the classical Cahn-Hilliard (C-H) model in which both the phases are ... -
Influence of Electric Field on the Global and Local Structure in the Ferroelectric Ceramic Na1/2Bi1/2TiO3 and its Solid Solutions with BaTiO3 and K1/2Bi1/2TiO3
(2018-08-14)Ferroelectric ceramics are very promising materials for a variety of piezoelectric applications such as high permittivity dielectrics, piezoelectric sensors, piezoelectric/electrostrictive transducers, actuators, electro-optic ... -
On the Factors Influencing the Stability of Phases in the Multiferroic System BiFeO3-PbTiO3
(2018-08-11)Rhombohedral perovskite BiFeO3 is a single phase multiferroic compound exhibiting both magnetic (Neel temperature ~370˚C) and ferroelectric (Curie point ~840˚C) ordering well above the room temperature. Ferroelectricity ... -
Diffusion Controlled Growth of A15-Based Nb3Sn and V3Ga Intermetallic Compounds
(2018-08-09)The A15-based Nb3Sn and V3Ga superconducting compounds are an integral part of synchrotrons and magnetic fusion reactor technology, especially where a magnetic field higher than 10 T is required, which lies beyond the limit ... -
Hyaluronic Acid Based Biodegradable Polyelectrolyte Nanocapsules and Modified Protein Nanoparticles for Targeted Delivery of Anticancer Agents
(2018-08-02)Targeted delivery aids in minimizing most of the drug-originated systemic toxic effects as well as improving the pharmacokinetic properties of anticancer therapeutics. Tumor targeting using hyaluronic acid (HA) as the ... -
A Physico-Chemical Approach in Binary Solid-State Interdiffusion
(2018-07-28)A physico-chemical approach (theory of dissociation and reaction) is developed, which can be used in binary diffusion couple to determine diffusion parameters of the product phases with wide homogeneity range, as well as ... -
Development of High Temperature Aluminium Alloys through Microstructure Control
(2018-07-27)A large number of advanced structural materials are based on metallic materials where alloying additions play a key role in imparting the required properties. Most of the commercially important aluminium alloys are classified ... -
Nanoparticles for Bio-Imaging : Magnetic Resonance Imaging and Fluorescence Imaging
(2018-07-19)This thesis provides several nanomaterial systems that can be used as contrast agents in magnetic resonance imaging (MRI) and for optical fluorescence imaging. Nanoparticle systems described in this thesis fall under three ... -
Moisture Barrier Polymer Nanocomposites for Organic Device Encapsulation
(2018-07-10)The advancement in smart technologies for organic conducting polymers as flexible substrates in LEDs, PVs and solid state lighting necessitates the development of ultra-high barrier films to protect the devices from moisture ... -
Development of Corrosion Protective Coating Systems for AZ31B Magnesium Alloy
(2018-07-05)Magnesium and its alloys are extensively used for various industries such as aerospace, automobile and electronics due to their excellent properties such as low density, high strength and stiffness and electromagnetic ... -
EMI Shielding Materials Derived from PC/SAN Blends Containing Engineered Nanoparticles
(2018-07-05)In recent years, increased use of electronic devices and wireless operations resulted in unavoidable electromagnetic (EM) pollution which has a significant impact on civil and military sectors. Considering the foremost ... -
Improving High Temperature Strength of 2219 Al Alloy by Minor Alloying Additions
(2018-06-25)Among Al alloys, 2219 Al alloy possesses highest strength at elevated temperatures. However, the application of this alloy is also restricted to a maximum temperature of 150°C, above which, the strengthening precipitates ... -
Hot Deformation Behaviour of Some Refractory Metals and Alloys
(2018-06-21)Out of the known refractory metals and alloys, molybdenum (Mo) and its alloys are very important due to their unique combination of properties which render them suitable for various applications. Owing to their good creep ...