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Densification Mechanisms for Spark Plasma Sintering in Alumina and Alumina Based Systems
(2018-03-19)
The densification mechanisms of polycrystalline α-alumina by spark plasma sintering are highly contradictory, with different research groups suggesting diffusion to dislocation controlled mechanisms to be rate controlling. ...
Micro-scale Fracture Testing of Graded (Pt,Ni)Al Bond Coats
(2018-04-16)
PtNiAl bond coats are diffusion aluminide coatings deposited on superalloy based turbine blades for oxidation resistance and improved adhesion between the substrate and the YSZ thermal barrier coating on top. They are ...
Effect Of Free-Volume On The Fracture And Fatigue Of Amorphous Alloys
(2010-07-01)
Bulk metallic glasses (BMGs) are a new class of structural materials and exhibit unique combinations of mechanical properties. As a result, their mechanical behavior has been an active area of scientific pursuit in the ...
Studies Of Glass Formation In Al-La-Ni And Mg-TM-RE Alloys With A Structure Mapping Approach
(2010-07-14)
The glass-forming composition ranges in Al-La-Ni and Mg-TM (Cu, Zn)-Y alloys were predicted using Miedema’s model. Glass-forming abilities of Al-La-Ni alloys and Mg-Cu-RE alloys were studied in terms of reduced glass ...
Microstructural Studies on High Cr-Mo Secondary Hardening Ultra-High Strength Steels
(2018-06-11)
Secondary hardening ultra-high strength (SHUHS) steels possess a unique combination of strength, fracture toughness and stress corrosion cracking resistance, which makes them candidate materials for aircraft landing ...
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 ...
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 ...
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 ...
Structure, Microstructure and Magnetic Properties of Fe-Ga and R-Fe based Magnetostrictive Thin Films
(2018-02-27)
Magnetostrictive materials belong to an important class of smart magnetic materials which have potential applications as ultrasonic transducers, sensors, actuators, delay lines, energy harvesting devices etc. Although, ...