S. Murugesan

Low temperature synthesis of Ni and Co substituted alloys of Pd and their hydrogen sensing characteristics

Palladium and palladium alloys (nickel, cobalt and nickel co-substituted) were prepared using low temperature chemical reduction technique at 300 K. The synthesized metal and alloys were deposited using PLD on alumina substrate. The deposited nanostructured thin film alloys showed much better sensitivity towards hydrogen between the concentrations of 2000 and 20000 ppm of hydrogen than pure palladium thin film at 300 K.

X‐Ray Diffraction Analysis of Defects in Cold Worked Type 316 Stainless Steel

In the present study, the dislocation densities of the cold worked type 316 stainless steel were calculated on the basis of the crystallite size and strain present in the samples using Williamson–Smallman approach. The samples annealed at 1323 K, 30 minutes and then furnace cooled were cold rolled to various percentages in the range 5–40percent;. Dislocation density has been found to increase with increasing percentage of cold work. The dislocation density values were correlated with hardness values of the cold worked samples.