Tribological behaviour of al-1100-coconut shell ash (CSA) composite at elevated temperature

Wear behaviour of Al1100- coconut shell ash (CSA) composites at high temperature is investigated. The composites such as Al-5%CSA, Al-10%CSA and Al-15%CSA is prepared, using stir casting technique. The specific strength of Al-15%CSA alloy composite is enhanced by 70% over Al-1100 base alloy. Regress...

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Bibliographic Details
Published in:Tribology international 2019-01, Vol.129, p.55-66
Main Authors: Sankara Raju, R. Siva, Panigrahi, M.K., Ganguly, R.I., Srinivasa Rao, G.
Format: Article
Language:English
Subjects:
Abrasion
Abrasive wear
AMCs
Ashes
Coconut shell ash
Coefficient of friction
Composite materials
Debris
Elevated temperature
High temperature
Photomicrographs
Regression analysis
Tribology
Wear rate
Wear tests
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Summary:Wear behaviour of Al1100- coconut shell ash (CSA) composites at high temperature is investigated. The composites such as Al-5%CSA, Al-10%CSA and Al-15%CSA is prepared, using stir casting technique. The specific strength of Al-15%CSA alloy composite is enhanced by 70% over Al-1100 base alloy. Regression analysis has enabled to quantify slopes of all the materials. While the pressure exceeds the critical value, abrasion increases rapidly, resulting in adhesive wear. When, the temperature increases, the coefficient of friction initially increases up to 6 N/mm2 and then decreases due to the presence of oxides in debris, which are liberated from tribo surfaces. XRD and EDAX analyses have revealed presence of oxide phases in the debris. SEM micrographs have confirmed abrasive nature of wear. •Preparation of AMC reinforced with coconut shell ash particulates (CSA) using stir casting route.•Identified physical, Mechanical properties and tribological performance of composite at elevated temperature.•Analyzed tribological effects of pressure, temperature & sliding distance on CSA composites.•SEM micrographs and Regression analysis have enabled to mechanism of wear with quantify slopes of all the materials.•XRD and EDAX analyses have revealed presence of oxide phases in the debris.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2018.08.011