Synthesis and Thermal Adsorption Characteristics of Silver-Based Hybrid Nanocomposites for Automotive Friction Material Application

Abstract

Advances in friction materials are imposed on developing multiceramic reinforced hybrid nanocomposites with superior tribomechanical properties. The silver-based matrix metals are gained significance in various applications like bearing, ratchet, and electrical contacts due to their high frictional resistance and good thermal and chemical stability compared to traditional metals. The present research is to develop silver-based hybrid nanocomposites containing alumina (Al2O3) and silicon carbide (SiC) nanoparticles of 50 nm mixing with the ratio of 0 wt% Al2O3/0 wt% SiC, 5 wt% Al2O3/0 wt% SiC, and 5 wt% Al2O3/5 wt% SiC via the semisolid vacuum stir-cast technique. The vacuum technology minimizes casting defects and increases composite properties. The casted composite samples are subjected to study the effect of reinforcement on thermal adsorption, conductivity, diffusivity, and frictional resistance. The composite containing 5 wt% Al2O3np/5 wt% SiCnp is to find optimum thermal and frictional behaviour. The thermal adsorption and frictional resistance are increased by 30% and 27% compared to unreinforced cast silver. The Ag/5 wt% Al2O3np/5 wt% SiCnp hybrid nanocomposite is recommended for automotive friction-bearing applications.

Sustainable development and conservation of agro‐waste coconut shell powder strengthen lightweight aluminum bio‐composite for user friendly

“…The increase in elastic modulus is due to the prime reason for the presence of 15 wt% coconut shell particles and good interfacial bonding achieved by an applied hydraulic pressure of 2 bar. However, the properties of composites may vary due to the constitutions of waste particle reinforcements present in the alloy matrix and the processing route (Venkatesh & Christraj, 2013; Venkatesh et al., 2022).…”

A Sustainable Development Perspective and Evaluating the Impact of Laser Cladding Parameters on Mild Steel

“…After surpassing this content range, crack formation in the coating layer resumes. In the absence of assisted ultrasonic vibration, columnar dendrites formed at the bottom of the cladding coating, resulting in the dissolution, combination, crystallization, and aggregation of WC ceramic particles [45][46][47][48][49]. However, when ultrasonic vibration was introduced, the dendrites present in the cladding layer were disrupted, leading to a noticeable refinement of the grains.…”