scholarly journals On the High-Temperature Oxidation and Area Specific Resistance of New Commercial Ferritic Stainless Steels

Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 405
Author(s):  
Valeria Bongiorno ◽  
Roberto Spotorno ◽  
Daniele Paravidino ◽  
Paolo Piccardo
Keyword(s):  
Weight Gain ◽  
High Temperature ◽  
Stainless Steels ◽  
Specific Resistance ◽  
Thermally Grown Oxide ◽  
Temperature Oxidation ◽  
Ferritic Stainless Steels ◽  
X Ray ◽  
Area Specific Resistance ◽  
Composition Structure

Two commercial ferritic stainless steels (FSSs), referred to as Steel A and Steel B, designed for specific high-temperature applications, were tested in static air for 2000 h at 750 °C to evaluate their potential as base materials for interconnects (ICs) in Intermediate Temperature Solid Oxide Fuel Cell stacks (IT-SOFCs). Their oxidation behavior was studied through weight gain and Area Specific Resistance (ASR) measurements. Additionally, the oxide scales developed on their surfaces were characterized by X-ray Diffraction (XRD), Micro-Raman Spectroscopy (μ-RS), Scanning Electron Microscopy, and Energy Dispersive X-ray Fluorescence Spectroscopy (SEM-EDS). The evolution of oxide composition, structure, and electrical conductivity in response to aging was determined. Comparing the results with those on AISI 441 FSS, steels A and B showed a comparable weight gain but higher ASR values that are required by the application. According to the authors, Steel A and B compositions need an adjustment (i.e., a plain substitution of the elements which form insulant oxides or a marginal modification in their content) to form a thermally grown oxide (TGO) with the acceptable ASR level.

Performance of Fe-33Ni-18Cr Alloy at High Temperature Oxidation

2020 ◽  
Vol 1010 ◽  
pp. 65-70
Author(s):  
Zahraa Zulnuraini ◽  
Noraziana Parimin
Keyword(s):  
Weight Gain ◽  
High Temperature ◽  
Oxide Scale ◽  
High Temperature Oxidation ◽  
Thick Layer ◽  
X Ray Diffraction ◽  
Temperature Oxidation ◽  
X Ray ◽  
Oxide Particles ◽  
Lower Temperature

This paper investigates the performance of Fe-33Ni-18Cr alloy at high temperature oxidation. The samples were isothermally oxidized at three different oxidation temperatures, namely, 600 °C, 800 °C and 1000 °C for 150 hours. This alloy was ground by using several grits of SiC paper as well as weighed by using analytical balance and measured by using Vernier caliper before oxidation test. The characterization was carried out using scanning electron microscope (SEM) equipped with energy dispersive x-ray (EDX) and x-ray diffraction (XRD). The results show that, the higher oxidation temperatures, the weight gain of the samples were increase. Sample of 1000 °C indicate more weight gain compared to samples oxidized at 600 °C and 800 °C. The kinetic of oxidation of all samples followed the parabolic rate law. The surface morphology of oxide scale at lower temperature is thin and form a continuous layer, while at high temperature, the oxide scale develops thick layer with angular oxide particles.

High Temperature Oxidation of Chromium-Nickel Steels★

CORROSION ◽  
1959 ◽  
Vol 15 (3) ◽  
pp. 57-62 ◽  
Author(s):  
D. CAPLAN ◽  
M. COHEN
Keyword(s):  
Weight Gain ◽  
High Temperature ◽  
Stainless Steels ◽  
High Temperature Oxidation ◽  
Surface Preparation ◽  
Austenitic Stainless Steels ◽  
Chromium Steel ◽  
Temperature Oxidation ◽  
Thin Oxide Film ◽  
Scale Layer

Abstract The scaling of austenitic stainless steels Type 302, 309 and 330 has been investigated by weight gain vs time measurements in air at 1600 to 2000 F and subsequent examination of the scales. As had been found previously with chromium steel, the curves exhibit breaks indicating intermediate periods of rapid oxidation due to disruption of the protective scale layer. Accumulation of silica at the metal/scale interface is found to contribute to this disruption; voids are considered to have the same effect. A distinction is drawn between such breaks and the type which arises from the extraordinary protectiveness of an initial thin oxide film, which is markedly affected by surface preparation and prior treatment. 3.2.3

Effects of W on microstructure and high-temperature oxidation behavior of ferritic stainless steel weldment

2017 ◽  
Vol 31 (16-19) ◽  
pp. 1744042
Author(s):  
Yijie Ji ◽  
Yuye Xie ◽  
Shuangchun Zhu ◽  
Biao Yan
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Ferritic Stainless Steel ◽  
Stainless Steels ◽  
Oxidation Behavior ◽  
Surface Oxide Layer ◽  
Temperature Oxidation ◽  
Ferritic Stainless Steels ◽  
Steel Weldment ◽  
Stainless Steel Weldment

With the promotion of fuel economy policy and automobile lightweight concept, ferritic stainless steels applied in vehicles’ exhaust hot end systems have been developed. This paper simulated the high-temperature environment at which the automobile exhaust system serviced in for high-temperature corrosion. Kinetic curves were conducted in isothermal environments at 1000[Formula: see text]C. X-ray diffraction, scanning electron microscope and energy dispersive spectrometer were used to study the oxidation behavior of ferritic stainless steels and the effects of tungsten (W) addition. The results show that, with increasing oxidation time, the rate of weight gains increase and the main failure is spalling of surface oxide layer. The addition of W has a complicated effect on the oxidation behavior of ferritic stainless steel weldment.

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