Research in magnetism at Indian institute of technology, Bombay

Abstract

The experimental solid state pbysics group at the Indian Institute of Technology, Bombay, has been engaged in research on ferromagnetic resonance and relaxation, magnetic ordering and exchange phenomena in ferrimagnetic systems. A brief report on the facilities developed and the work done by the magnetism group is presented.

Selective metallization of alumina by laser

“…The deposited layer of nickel was cleaned thoroughly in distified water, activated in a Puma C-12 activator (Puma Chemical Corporation, New York) and then immersed in an electroless Ni-B bath. The electroless bath consisted of nickel chloride, complexing agents and dimethylamine borane [16], and was operated at pH 6.0 and at a temperature of 65 °Cfor 1 h.…”

Constitutive flow behaviour of austenitic stainless steels under hot deformation: artificial neural network modelling to understand, evaluate and predict

“…The flow stress data for all these steels are evaluated based on isothermal hot compression testing in the temperature range 1123-1523 K and strain rate range 10 −3 -10 2 s −1 . The details of testing and evaluation of flow stress are given elsewhere [13][14][15][16][17]. A total of 2128 data were used in development of the model.…”

“…Hence, these models have limited practical use. In this study, we propose an ANN model based on in-house experimental data [13][14][15][16][17] obtained from various grades of austenitic stainless steels during hot compression. The technological importance of austenitic stainless steels stems from their higher corrosion resistance, in addition to better mechanical properties and moderate resistance to irradiation.…”