The Ternary amorphous Ni x Co y Pz system with composi- tional ranges of 15.3 < x < 55.5, 29.0 < Y < 70. 0 and 14. 7 < z < 15.5 has been prepared following an electroless deposition technique. The technique consist in using ...
In this thesis, an attempt has been made to study the electronic properties of noble metals and some fcc transition metals. During the past two decades the techniques for solving the band structure problems have reached a ...
The growing need for high-speed digital circuits and high-frequency applications are generally met by devices made on high carrier mobility III - V semiconductors such as GaAs, InP, InGaAsP and InGaAs. Considerable attention ...
Of the three varieties of corrosion resistant alloy cast irons in use, the high Si irons have useful applications only in strongly oxidizing conditions. They however, suffer from poor mechanical strength and shock resistance. ...
The present thesis comprises of mainly five chapters. Chapter - 1, Introduction, outlines the achievements and problems associated with the fabrication of cast particulate MMCs through the liquid metallurgy route. The major ...
Among the aluminium base bearing alloys aluminium-tin alloys are widely used in industrial bearings. The replace-ment of tin by lead is of interest because, besides being cheaper lead ensures a better interfacial film of ...
Aluminium alloy particulate composites have received wide spread attention from the technologists due to its improved specific strength (strength/unit weight) and stiffness especially at elevated temperatures. A number of ...
Elements such as arsenic, antimony, tin, bismuth, cadmium, copper, zinc and silver occur commonly in asso-ciation in the sulphide lead-deposits and therefore constitute the common imperuties in lead bullion obtained in ...
Dual-phase steels consisting of martensite phase embedded in the ferrite matrix are becoming important engineering mate-rials due to a unique combination of properties viz., (i) continuous yielding behaviour or the absence ...
Austenitic Mn steel, known as Hadfield steel, has a nominal composition: 1.0-1.4 C (wt. pct.), 11.0-14.0 Mn, 1.0 Si (Max) and 0.07 P (Max). This steel with its extremely high strength and toughness possesses high work ...
The understanding of the mode of bonding in
different elements have begun in 1916 with the pioneering
contribution of G.N.Lewis [ 1 ] ;,.He propounded the
electronic theory of chemical bond by assuming that a
single ...
A comprehensive review of the literature revealed that corrosion resistant alloy cast irons can be broadly classified into three categories namely (a) ferritic (high silicon cast irons), (b) austenitic (Ni-resist cast ...
The present work is aimed at studying the metallurgical behaviour
of P/M superalloys which are low in cobalt and are comparatively richer in refractory elements such as tungsten, molybdenum, niobium etc. Chemistry of a ...
Several natural and technological reactive and non-reactive multi-component systems such as slags encountered in different metal extraction or refining processes, refrac-tories and building materials, dispersed phases of ...
Quality raw materials having lower percentage of unwanted elements like sulphur are depleting with time and at the same time development of new special alloys warrants very low sulphur Content. These constraints are ...
The 2014 Al•-alloy has a nominal composition: 4.40 Cu, 0.40 Mg, 0.80 Si, 0.80 Mn (Wt.pct.) and Fe as impurity element_ Although this alloy has its own importance in the aircraft industry due, to high hardness and high ...
Rheoeasting is an emerging casting technique in which a liquid alloy is vigorously agitated during its partial solidification to yield a slurry comprising of non-dendritic solid particles uniformly suspended in the remaining ...
The present investigation deals with hot upsetting, partially open die forgings and closed
die forgings of sintered iron, iron-carbon alloys (carbon varying from 0.35 to 1.36 %) and 0.45 % phosphorus steel powder preforms ...
Metallic solutions and their oxide melts especially those involvingsilicate systems are of primary interest to extrac-tive metallurgists for optimization of existing unit processes and development of newer techniques of ...
Extrusion of metal powders is a well established forming process and its potential especially for shaping brittle powders into useful products was realised in the very early stages when filaments of electric bulbs were ...