Document Details Document Type : Article In Journal  Document Title : ELECTROCHEMICAL BEHAVIOUR OF Al-Si ALLOYS IN ACID AND ALKALINE MEDIA السلوك الكهروكيميائي لسبائك Al-Si في الأوساط الحمضية والقاعدية   Subject : Scientific Research  Document Language : English  Abstract : This study compares the electrochemical behavior of three aluminum-silicon alloys in acidic and alkaline media by employing chemical, polarization and electrochemical impedance spectroscopy measurements in addition to scanning electron micrography. In general, aluminum-silicon alloys corrode at a rate higher than pure aluminum in these media. The corrosively of the media was in the order of NaOH > H3PO4 > oxalic acid > H2SO4 > tartaric acid > succinic acid. The corrosion susceptibility of the alloys decreased in any of the study media as follows: Al - 11%, Si > Al - 7% Si > Al - 22% Si. The results were discussed taking into account the microstructural features of the alloys. While capacitive control was observed in H2SO4, resistive control was apparent in NaOH medium.  ISSN : 1012-1319  Journal Name : Science Journal  Volume : 17  Issue Number : 02561654  Publishing Year : 1421 AH 2001 AD  Article Type : Article  Added Date : Sunday, July 22, 2012  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email أمينة أحمد مظهر MAZHAR, Amina Ahmad Investigator Doctorate   سناء طاهر عرب Arab, Sanaa Taher Researcher Doctorate dr.s.arab@hotmail.com إحترام عبدالله نور NOOR, Ehtram Abd -Alah Researcher Doctorate M7o7o7n@hotmail.com Files File Name Type Description  33996.pdf pdf ملخص البحث  36869.pdf pdf البحث Back To Researches Page