Main Page
CV
Authoress & Researches
Research Interests
Conferences & Seminars
Training Courses
Scientific Courses
Workshop
Posts
Internal Posts
Foreign Posts
PhotoAlbum
Files
Favorite Links
Researches
عربي
English
About
Admission
Academic
Research and Innovations
University Life
E-Services
Search
Sanaa Taher Saeed Arab
Document Details
Document Type
:
Article In Journal
Document Title
:
Effect of strong acids on the electrochemical behavior Ni89P11 glassy alloy
تاثير الاحماض القويه على السلوك الكهروكيميائى لسبيكة Ni89P11 زجاجية الخواص
Subject
:
Scientific Research
Document Language
:
English
Abstract
:
The effect of the H2SO4 and H3PO4 concentration and immersion times on electrochemical amorphous Ni89P11 alloy using electrochemical polarization and impedance techniques is carried out at 30°C .The formation of elemental phosphorus plus NiS or P2O5 on the alloy surface in H2SO4 or H3PO4 solution respectively, are confirmed by XPS method and the formation of Nickel oxides is excluded. In both acids, a passive region is observed, and a gradual increase of the current density continues, indicating that the dissolution of Ni through the passive film is occurring. Nyquist plots exhibited only one capacitive semicircle with an open end in most of applied frequency ranges. The capacitive loop mainly due to the charge transfer resistance of the alloy. The existence of another capacitive loop sometimes confirms the diffusion process on the passive layer.
ISSN
:
1012-1319
Journal Name
:
Science Journal
Volume
:
4
Issue Number
:
1
Publishing Year
:
1428 AH
2008 AD
Article Type
:
Article
Added Date
:
Tuesday, July 24, 2012
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
سناء طاهر عرب
Arab, Sanaa Taher
Researcher
Doctorate
dr.s.arab@hotmail.com
Files
File Name
Type
Description
34017.pdf
pdf
البحث
36938.PNG
PNG
الصفحة الاولى من البحث
Back To Researches Page