Corrosion in smoke, hydrocarbon and SO2 polluted atmospheres—I. General behaviour of iron

Skerry, B. S.; Johnson, J. B.; Wood, G. C.

doi:10.1016/0010-938x(88)90048-0

Cited by 29 publications

(9 citation statements)

References 39 publications

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“…Mild steel exposed to SO 2 showed corrosion products of thickness 28, 265 nm respectively for 2 and 24 h. However, on the seventh day the thickness of corrosion products has increased far beyond 300 nm. Although the thickness at 2 h for SO 2 was less when compared to chloride spray for the same period, which may be due to the complexity of the SO 2 interaction with the metal, which follows a path of adsorption and further reduction [17]. However, after 24 h the thickness of corrosion products due to SO 2 exposure has increased three times more than chloride spray and 450 times more than distilled water spray.…”

Section: Resultsmentioning

confidence: 55%

Conversion electron Mössbauer spectroscopy study of growth and nature of corrosion products on mild steel exposed to different environments

Kumar

Singh

2008

Hyperfine Interact

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In this study, conversion electron Mössbauer spectroscopy (CEMS) has been utilized for identifying the nature of initial corrosion products formed on the surface of steel under different environments and measurement of relative thickness of corrosion products formed. CEMS studies on mild steel exposed under different environments, viz. mild steel sprayed with (1) distilled water (2) 3% NaCl and (3) mild steel exposed to SO 2 were carried out. The initial stable product of corrosion is found to be γ-FeOOH, which will transform into other oxyhydroxides and oxides, depending on environments. The mechanisms for the corrosion processes occurring under different conditions are also discussed.

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Section: Resultsmentioning

confidence: 55%

Conversion electron Mössbauer spectroscopy study of growth and nature of corrosion products on mild steel exposed to different environments

Kumar

Singh

2008

Hyperfine Interact

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“…On one hand, the original texture was retained as the temperature was maintained as low as 600°C, and the size of carbides decreased. On the other hand, at higher temperatures, the martensite laths gradually coarsened, and the precipitated carbides dissolved completely . From a metallurgical point of view, the growth of martensite laths and precipitation behavior of carbide related to temperature is attributed to the phenomena of crystallization and diffusion …”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, at higher temperatures, the martensite laths gradually coarsened, and the precipitated carbides dissolved completely. 15 From a metallurgical point of view, the growth of martensite laths and precipitation behavior of carbide related to temperature is attributed to the phenomena of crystallization and diffusion. 16 The carbon steel, stainless steel, copper, and aluminum alloy are presented in this and previous reports, which are easily found where a domestic fire occur.…”

Section: Figurementioning

confidence: 99%

Influence of liquid accelerant on scaling behavior of stainless steel in fire: An experimental study

2019

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Summary Among the commercial materials, stainless steel is widely used in our daily life and can be hardly destroyed by flame or the heat emanating from a fire. In this fundamental work, the formation and development of oxide scale on stainless steel 1Cr11Ni2W2MoV were investigated at 600°C to 800°C in the atmospheres with and without liquid accelerant. The aim of this work is to figure out the influence of accelerant on the oxidation pattern of stainless steel at high temperature that occurs in a fire. The morphology, microstructure, and the growth rate of the oxide scales were characterized by thermogravimetric analysis, visual analysis, scanning electron microscopy, energy‐dispersive spectroscopy, and X‐ray diffraction. The results revealed that the oxide scale formed on the stainless steel 1Cr11Ni2W2MoV was mostly protective in both atmospheres from 600°C to 800°C, except that breakaway oxidation occurred locally that resulted in the formation of intrusion oxide. Both increasing temperature and the presence of kerosene in combustion atmosphere increased the mass gain of stainless steel, which was mainly attributed to the occurrence of local breakaway oxidation. Consequently, the addition of accelerant just increased the formation trend of local intrusion oxide, rather than remarkably affect the scaling behavior. Therefore, careful analysis is needed to identify the presence possibility of accelerant in oxidation atmosphere according to the scaling behavior of stainless steel. Characterization of surface scale and metallurgical analysis of metallic material are expected to be supplementary technique for fire characterization in the future.

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“… The oxide scale formed in gas containing these species has more defects, such as crack and pore, and show less adhesion. Consequently, the oxidizing species can penetrate oxide scale rapidly to the scale‐substrate interface and react directly with the metallic components, inducing accelerated oxidation …”

Section: Resultsmentioning

confidence: 99%

Effect of simulated combustion atmospheres on oxidation and microstructure evolution of aluminum alloy 5052

Xie

Wang

et al. 2017

Fire and Materials

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Summary Among the common materials, metals can be hardly destroyed by flame or the heat emanating from a normal fire. Consequently, investigation on the thermal patterns produced on metallic objects after fire exposure can provide important physical evidence for fire cause/origin determination. Aluminum alloy is widely used in our daily life and the industry; hence, it can be easily found on a domestic or industrial fire scene. In this paper, the aluminum alloy 5052 was exposed in the simulated combustion gases with and without kerosene in the range of 300 to 500°C. Mass change, morphologies, and microstructures of each sample were carefully characterized by thermogravimetric analysis, morphologic observation, and electron microscopy observation with energy‐dispersive spectroscopy analysis after exposure. As expected, the microstructure of alloy changed during high temperature exposure. At the same time, an oxide scale formed and was thickened on the surface of alloy. The results reveal that the temperature can significantly affect the growth of oxide scale and the metallurgical microstructure of alloy. It is noteworthy that the presence of kerosene in the combustion gas accelerated oxidation rate and produced oxide scales different from those formed in air. These feature evolutions in surface oxide are expected to offer complementary insight on determining the fire characteristics, such as the exposure temperature, period and whether liquid accelerant is involved.

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Corrosion in smoke, hydrocarbon and SO2 polluted atmospheres—I. General behaviour of iron

Cited by 29 publications

References 39 publications

Conversion electron Mössbauer spectroscopy study of growth and nature of corrosion products on mild steel exposed to different environments

Conversion electron Mössbauer spectroscopy study of growth and nature of corrosion products on mild steel exposed to different environments

Influence of liquid accelerant on scaling behavior of stainless steel in fire: An experimental study

Effect of simulated combustion atmospheres on oxidation and microstructure evolution of aluminum alloy 5052

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