Entrepreneurial Development Initiative And Micro Enterprise Sustenance In Awka Metropolis (PDF)

Description

– Corrosion Inhibition of Double Thermally-Aged High Pressure Die Cast (Ssm-Hpdc) Al-Si-Mg Alloy By Neem Seed And Guava Leaf Extracts –

Download Corrosion Inhibition of Double Thermally-Aged High Pressure Die Cast (Ssm-Hpdc) Al-Si-Mg Alloy By Neem Seed And Guava Leaf Extracts. Metallurgical And Materials Engineering students who are writing their projects can get this material to aid their research work.

Abstract

This study determined the corrosive effect of seawater on as-received and double thermally-agedAl-Si-Mg alloy. It also determined the functional groups present in guava leaf and neem seedextracts and their inhibitive effect on the corrosion of Al-Si-Mg alloy in seawater.

This was witha view to enhancing their performance in the aggressive seawater environment. The studyinvolved Fourier transform infrared (FTIR) analysis of the extracts, thermal ageing treatment,hardness measurement, gravimetric based-mass loss test, potentiodynamic polarization test andmicrostructural examination.

Introduction

Aluminum is the second widely used metal due to its desirable chemical, physical andmechanical properties. It is alloyed with elements like Si, Mg, Cu, Mn, Fe etc. Addition ofsilicon to aluminum can improve its fluidity as well as castability and mechanical properties(Asuke et al., 2009).

Addition of Magnesium to Al-Si alloy improves its strength to weight ratioand yield stress by combining with silicon to form the age hardening phase (Mg2Si) whichprecipitates from a super saturated solid solution during heat treatment (Birol, 2009).

Semi-solid metal processing has gained increasing interest from automotive industry and to alesser extent the aerospace industry because it demonstrate the capability of producing near –netshaped components with good mechanical properties (Govender et al., 2008).

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