عنوان المقالة:C-22تقييم سلوك التاكسد عند درجات الحرارة العالية لسبيكة انكونيل 600 وسبيكة هستالوي Evaluation of High-Temperature Oxidation Behavior of Inconel 600 and Hastelloy C-22
تقييم سلوك التاكسد عند درجات الحرارة العالية لسبيكة انكونيل 600 وسبيكة هستالوي
C-22
Abstract
Abstract The aim of this study was to investigate the oxidation behavior of nickel-base superalloys (Inconel 600 and
Hastelloy C-22) by the determination of the oxidation rates
of alloys at elevated temperatures and at ambient air. The
cyclic oxidation method was adapted by heating of alloys
periodically in still air at 900, 1000 and 1100◦C followed
by cooling at ambient temperature. The weight change measurement was recorded during the cyclic oxidation tests. The
X-ray diffraction and microstructure study were also used
as characterization methods to illustrate the properties of
studied alloys and oxide film that formed on the surface of
oxidized alloys. Inconel 600 and Hastelloy C-22 showed their
ability to develop a uniform protective oxide film. The oxide
film that formed on both alloys was chromia oxide Cr2O3
with smaller amount of spinel oxide NiCr2O4. The results
of the weight gain measurements suggest that the oxidation
kinetics of both alloys follows the parabolic behavior during
the experimental tests. Also both alloys at 1100◦C exhibited
severe spallation of oxide film with linear decreasing in the
weight change measurements. The p-kp model was implemented to describe the subsequent cyclic process of oxide growth and spalling.
Publication Date
6/30/2015
Publisher
Arabian Journal for Science and Engineering- Springer-Clarivate Analytics
أ.د. علي سبع حمود | Professor Dr. Eng. Ali Sabea Hammood | 8776