Corrosion behavior of aluminium- molybdenum surface composites developed by friction stir processing
Prof. Amit Arora with other panel presenters and students
Abstract
Effect of molybdenum reinforcement particles on the corrosion resistance of the Al-Mo surface composite prepared using single pass and double pass friction stir processing is studied. Surface composites exhibit better corrosion resistance with higher corrosion potential and lower corrosion rate based on the potentiodynamic testing. Addition of more Mo particles using second groove further increases corrosion resistance. Second processing pass improves the corrosion resistance due to more homogeneously distributed fine Mo particles. Surface composites show charge transfer controlled corrosion behavior whereas the base alloy exhibited mixed corrosion behavior. Pitting is reduced where Mo particles are present in the surface composites.
Mahesh V.P.
Assistant Professor of Metallurgical and Materials Engineering, PEC
Mahesh works on surface composites fabrication using friction stir processing. His major focus is on the electrochemical and mechanical behavior of Aluminium matrix surface composites. He also performs tribological analysis of metal matrix composites. Other major fields of interest are liquid metal stir casting, centrifugal casting and functionally graded materials (FGM).