Literatureo ne lectroless Ni-P deposition, in recent decades, has dwelled primarily on surface engineering and corrosion-resistant applications. By contrast, we havemany researcharticles devoted to the engineering aspects of the electroless Ni-P depositions and their technology. The present article deals with the development of electroless Ni-P bath,a dvantages and mechanisms of deposition, and applications of the Ni-P deposits. We also present acomparison of the properties of electroless Ni-P and Ni-B as well as the recent developments in nickel-phosphorous research. We attempt to review these in ad etailed manner.W ea lso briefly discuss the future developments of electroless Ni-P.

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The constitutive equations of MEE materials are used to derive the finite element equations involving the coupling between mechanical, electrical and magnetic fields. The candidate materials for this study are piezoelectric (BaTiO3) and magnetostrictive (CoFe2O4) material. The linear buckling and vibration behavior of layered MEE beam under uniform magnetic field is carried out using finite element method. The present study is limited to clamped-clamped boundary conditions. The influence of stacking sequences and piezoelectric coupling on critical buckling magnetic field and vibration behaviour is investigated.

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The failure analysis was carried out on a failed pinion gear which is used for power transmission system in the automobile sector. The pinion gear is made of case carburized steel with low nickel and chromium content and it also has undergone extensive corrosion due to an environmental problem. The teeth are badly damaged and corroded at the surface. However, the crack has occurred due to stress and it is found only in certain places. To improve the corrosion resistance, nickel and chromium content are added and also heat treatment is carried out. The mechanical properties and wear resistance are improved in EN24 steel when compared to failure gear and EN24 steel before heat treatment.