Evaluation and Characterization of Tensile Properties of Short Coated Carbon Fiber Reinforced Aluminium7075 AlloyMetal Matrix Composites via Liquid Stir Casting Method

The interface between the reinforcement and the matrix has a significant role in enhancing the property of the composite. In this work to increase the wetting ability of the reinforcement, nickel coating is done over the carbon fiber. The process of coating is carried out through three stages. It involves sensitization time, activation time and metallization time. Using the optimized time interval of the above process coating is done, on the fiber of range 0.6 to 1 micrometer. This coated fiber has the good cohesive property within each other, which increases the wettability. Stir casting process is carried out with the stirring speed of 200 rpm and the melting temperature about 780-8000C is used for the manufacturing of the composite. The results of this study revealed that, as the short coated carbon content was increased, there were significant increases in the Ultimate Tensile Strength (UTS). Furthermore, Scanning Electron Microscopy (SEM) was used in order to coordinate relationships between quality of the carbon fiber and aluminium alloy bond and thereby link with tensile properties of the metal matrix composites. The metal matrix composites are a very important role in the industries such as aerospace, automobile and sports equipment etc. The aluminium material is considered to be a light weight metal, to enhance the property of the aluminium 7075 alloy, the short coated carbon fibers added to the aluminium as a reinforcement.