Search In this Thesis
   Search In this Thesis  
العنوان
Corrosion inhibition and stress corrosion cracking behavior of some copper-base alloys in polluted salt water /
المؤلف
Khorshed, Lobna Abdel Aziz Foad Salh.
هيئة الاعداد
باحث / لبنى عبدالعسيس فؤاد صالح خورشيد
مشرف / طارق أحمد فؤاد خليفه
مناقش / السيد عبدالسلام قطب عاشور
مناقش / حسام الدين محمد زكريا
الموضوع
Copper castings.
تاريخ النشر
2014.
عدد الصفحات
203 p. :
اللغة
الإنجليزية
الدرجة
الدكتوراه
التخصص
الهندسة الميكانيكية
تاريخ الإجازة
1/1/2014
مكان الإجازة
جامعة بنها - كلية الهندسة بشبرا - الهندسة الميكانيكية
الفهرس
Only 14 pages are availabe for public view

from 97

from 97

Abstract

A comprehensive literature review covered corrosion inhibition and stress corrosion of copper-based alloys is presented. It reveals the detailed mechanisms of corrosion, stress corrosion and its inhibition with environmentally-friendly inhibitors in sulfide polluted sea water. The aim of this thesis is to characterize the modes of corrosion, corrosion inhibition and stress corrosion cracking of α Al-bronze alloy in chloride solutions with different concentrations of sulfide ions in presence and in absence of different concentrations of amino acids with and without applied stress as well as the electrochemical behavior of the alloy in these media. Electrochemical techniques were performed to assist the interpretation of the SCC data. Electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) were used to investigate the mechanism of corrosion inhibition. Scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) experiments were carried out in order to verify the elements present on the surface of α Al-bronze alloy after immersion in the tested solutions for 24 hour. A comparison of SEM micrographs obtained in the absence and presence of inhibitors reveals a marked inhibiting effect of these compounds.