scholarly journals Mechanical Properties of the Oxide Film and their Roles in High Temperature Oxidation of Metals

1976 ◽  
Vol 25 (4) ◽  
pp. 251-265 ◽  
Author(s):  
Teiichi Homma
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Oxide Film ◽  
High Temperature Oxidation ◽  
Temperature Oxidation

scholarly journals The high temperature oxidation of metals

1926 ◽  
Vol 111 (757) ◽  
pp. 203-209 ◽  
Keyword(s):  
High Temperature ◽  
Oxide Film ◽  
High Temperature Oxidation ◽  
Protective Action ◽  
Protective Film ◽  
Parent Metal ◽  
Compact Structure ◽  
Temperature Oxidation ◽  
Protective Properties ◽  
Porous Oxide

The oxidation of metals at high temperatures has been investigated with some thoroughness by Pilling and Bedworth. They found that the metals could be divided into two great classes according to the nature of the oxide produced. If the volume of the oxide is greater than that of the metal from which it was produced an oxide film of compact structure and protective properties will be produced. If the volume of the oxide is less than that of its parent metal a porous oxide is produced which has no protective action whatever. The oxidation of the metals of the first class is controlled by the diffusion of oxygen through the protective film of oxide and the application of the diffusion laws to this process lead us to expect that the oxidation law will be W 2 = K t W 2 = amount of oxygen absorbed t = time K is a constant.

High-Temperature Oxidation Behaviors of 30Cr25Ni20Si Heat-Resistant Steel in Air

2020 ◽  
Vol 861 ◽  
pp. 83-88
Author(s):  
You Yang ◽  
Xiao Dong Wang
Keyword(s):  
High Temperature ◽  
Oxide Film ◽  
High Temperature Oxidation ◽  
Film Growth ◽  
Surface Oxidation ◽  
Mass Gain ◽  
Resistant Steel ◽  
Temperature Oxidation ◽  
Heat Resistant Steel ◽  
Heat Resistant

High temperature oxidation dynamic behaviors and mechanisms for 30Cr25Ni20Si heat-resistant steel were investigated at 800, 900 and 1000°C. The oxide layers were characterized by scanning electron microscopy (SEM-EDS), X-ray diffractometer (XRD). The results showed that the oxidation rate of test alloys is increased with increasing the oxidation time. The oxidation dynamic curves at 800 and 900°C follow from liner to parabolic oxidation law. The transition point is 10 h. At 1000°C, the steel exhibits a catastrophic oxidation, and the oxidation mass gain value at 50 h is 0.77 mg/cm2. This suggests that the steel at 900°C has formed a dense protective surface oxidation film, effectively preventing the diffusion of the oxygen atoms and other corrosive gas into the alloy. Therefore, at the first stage of oxidation, chemical adsorption and reaction determine the oxide film composition and formation process. At the oxide film growth stage, oxidation is controlled by migration of ions or electrons across the oxide film. When the spinel scale forms, it acts as a compact barrier for O element and improving the oxidation resistance.

Effects of High Temperature Oxidation on Mechanical Properties of Ti 3 AlC 2

2017 ◽  
Vol 33 (6) ◽  
pp. 596-602 ◽  
Author(s):  
Xichao Li ◽  
Lili Zheng ◽  
Yuhai Qian ◽  
Jingjun Xu ◽  
Meishuan Li
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
High Temperature Oxidation ◽  
Temperature Oxidation
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