Oxidation Behavior of Quaternary Co-20Re-25Cr-3Si Alloy at Laboratory Air
نویسندگان
چکیده
The iso-thermal oxidation of the quaternary Co-20Re-25Cr-3Si alloy at 1,000–1,200 C under laboratory air for 24 h has been studied. kinetics follow parabolic law perfectly and value activation energy is 220.74 kJ/mol. Unlike experimental condition 0.1 MPa pure oxygen, presents a good resistance due to formation dense continuous layer Cr 2 O 3 in contact with alloy. A 79% drop oxygen pressure changed mode from catastrophic mild oxidation. thickness protective decreases when temperature increases. Therefore, shows best 1,000 C. Moreover, another perspective, compared Co-17Re-23Cr-3Si alloy, addition about 2% can also improve greatly by forming layer.
منابع مشابه
THE DEFORMATION BEHAVIOR OF AZ31 MAGNESIUM ALLOY AT ELEVATED TEMPERATURES
AZ31 magnesium alloy is considered as a promising alloy in various applications and industries. Furthermore, to design a proper hot working process (rolling, forging and extrusion), the assessment of hot working behaviour of the alloy is necessary. Accordingly, the hot deformation behaviour of AZ31 alloy was studied through hot compression testing method This was carried out in a wide range of ...
متن کاملFormation and Evaluation of Oxidation Behavior of Zirconia- Aluminide Coating on Nickel- Based Alloy
Practical applications of thermal barrier coatings with aluminide bond-coats are limited due to oxide scale spallation of the aluminide coating under applied thermal stresses. Considering the positive effects of oxygen-active elements or their oxides on the high temperature oxidation behavior, in this research zirconia was introduced into an aluminide coating. For this purpose, a Watts type bat...
متن کاملA study of oxidation behavior of AZ91D alloy with YSZ coating using EIS
Oxidation behavior of AZ91D magnesium alloy with 3YSZ coating and aluminum interlayer was studied in air at 250 °C using electrochemical impedance spectroscopy EIS, scanning electron microscopy SEM, and X-ray diffraction XRD. The oxidation process was carried out in various duration times from 1 to 10 h. A three-electrode electrochemical cell was employed for all the EIS measurements. Also, to ...
متن کاملHigh Temperature Oxidation Behaviour of Nimonic - 115 Alloy in Presence of Sodium Salts at 850OC
The high temperature oxidation behaviour of Nimonic-115 industrial alloy has been investigated in presence of NaNO3, Na2CO3 and Na2O2 at 850oC in flowing air. The oxidation kinetics and effect of salt deposition for the period of 48 h were studied. The scale morphologies were determined on the basis of X-ray diffraction anal...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Frontiers in Materials
سال: 2021
ISSN: ['2296-8016']
DOI: https://doi.org/10.3389/fmats.2021.706489