Dry Sliding Wear Mechanisms of Incorporated Hydroxyapatite Waste Materials: Synthesis and Characterization of Magnesium
- PDF / 4,695,134 Bytes
- 21 Pages / 595.276 x 790.866 pts Page_size
- 40 Downloads / 256 Views
ORIGINAL ARTICLE
Dry Sliding Wear Mechanisms of Incorporated Hydroxyapatite Waste Materials: Synthesis and Characterization of Magnesium Hybrid Composites B. Vinod1 • M. Anandajothi2
Received: 29 June 2020 / Accepted: 5 October 2020 The Indian Institute of Metals - IIM 2020
Abstract Throwing daily waste in the landfills is the most popular way of disposal used today; in order to address this issue, both the government and environmental groups have implemented various approaches. In this paper, the conversion of wastes obtained from the agriculture process used in industrial and medical surgery is an approach that will add more value to waste utilization. An attempt was made in varying different weight fractions to develop magnesium-based hybrid composites using powder metallurgy (P/M) technique. Experiments were carried out to elucidate the wear behavior using pin-on-disk tachometer by taking five different applied loads (10–50 N), sliding distance (300–1500 m) and sliding speed (1–5 m/s). The wear mechanisms were examined, and the dominating wear mechanism was predicted through wear mechanism maps. The mechanical properties like micro-hardness, density, impact and tensile strength were investigated. The chemical compositions and phases of magnesium hybrid composites were examined by energy-dispersive X-ray spectroscopy and X-ray diffraction. The results show that superior wear resistance is achieved in AZ91D/7.5% (SiO2–HA) hybrid composite compared with other composites. The ultra-severe wear regime is reduced by adding hard dispersive particles. Wear loss and coefficient of friction have been analyzed to predict material behavior.
& B. Vinod [email protected] 1
Department of Mechanical Engineering, Priyadarshini College of Engineering and Technology, Nellore, India
2
Department of Mechanical Engineering, SNS College of Engineering, Coimbatore, India
Keywords Eggshell and agricultural waste Wear mechanism map Tribology characteristics Safe regime Microstructural analysis
1 Introduction In the past two decades, research in development of product has been increasing interest in composite materials over monolithic materials in various industrial and engineering fields. The awareness of hybrid composites is aggressively expanding in all applications like automobile, industrial sectors and especially in research field. The hybrid metal matrix composites (HMMC’s) evoke a keen interest in achieving high hardness, good corrosion and wear resistance compared to conventional alloys [1]. Compared to other alloys, magnesium has 75% less density than iron-based alloys and also 30% less density than that of aluminum alloys. Reducing the weight of a vehicle tends to the downfall of fuel consumption and emissions. Magnesium AZ91 D alloy overcomes the demerits of monolithic magnesium and other alloys. In these days, usage of AZ91D alloy is growing rapidly which exhibits superior mechanical properties like lightweight material, high yield strength and low corrosion as compared to other magnesium alloys [2]. S
Data Loading...
