scholarly journals In-Depth Oxide Scale Growth Analysis of B and Ti Microalloyed AISI 304 in Oxygen-Containing Furnace Atmospheres and CH4Burn-Simulating Furnace Atmospheres

2018 ◽  
Vol 90 (1) ◽  
pp. 1800447 ◽  
Author(s):  
Aleksi Laukka ◽  
Eetu-Pekka Heikkinen ◽  
Timo Fabritius
Keyword(s):  
Oxide Scale ◽  
Growth Analysis ◽  
Scale Growth ◽  
Aisi 304

Manganese Effect on Isothermal High Temperature Oxidation Behaviour of AISI 304 Stainless Steel

2008 ◽  
Vol 595-598 ◽  
pp. 1127-1134 ◽  
Author(s):  
Frédéric Riffard ◽  
Henri Buscail ◽  
F. Rabaste ◽  
Eric Caudron ◽  
Régis Cueff ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Oxide Scale ◽  
304 Stainless Steel ◽  
Initial Growth ◽  
Aisi 304 Stainless Steel ◽  
Protective Oxide ◽  
Temperature Oxidation ◽  
Aisi 304

Chromia-forming steels are excellent candidates to resist to high temperature oxidizing atmospheres because they form protective oxide scales. The oxide scale growth mechanisms are studied by exposing AISI 304 stainless steel to high temperature conditions in air, and the analyses were carried out by means of thermogravimetry and in situ X-rays diffraction. The in situ XRD analyses carried out during high temperature AISI 304 steel oxidation in air reveals the accelerated growth of iron-containing oxides such as hematite Fe2O3 and iron-chromite FeCr2O4, when the initial germination of the oxide layer contains the presence of a manganese-containing spinel compound (1000°C). When the initial growth shows the only chromia formation (800°C), hematite formation appears differed in time. Protection against corrosion is thus increased when the initial germination of manganese-containing spinel oxide is inhibited in the oxide scale.

Assessment of a Mechanical Model Associated with Oxide Scale Growth on T91 Steel at 550 °C Under Wet Atmosphere

2017 ◽  
Vol 88 (1-2) ◽  
pp. 57-70 ◽  
Author(s):  
Marie-Christine Demizieux ◽  
Jérôme Favergeon ◽  
Laure Martinelli ◽  
Clara Desgranges ◽  
Gaël Sattonnay
Keyword(s):  
Oxide Scale ◽  
Mechanical Model ◽  
Scale Growth

On the Estimation of Oxide Scale Growth in T22 Superheater and Reheater Tubes

2012 ◽  
Vol 516-517 ◽  
pp. 364-369
Author(s):  
Cai Xia Bian ◽  
Ke Yi Zhou ◽  
Jian Qun Xu
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Oxide Scale ◽  
Growth Kinetics ◽  
Iterative Procedure ◽  
Heat Transfer Analysis ◽  
Oxide Growth ◽  
Scale Growth ◽  
Small Influence ◽  
Influence Degree

In this paper, an iterative procedure was performed for the prediction of scale growth in T22 superheater and reheater tubes, which utilized empirical formulae for oxide-growth kinetics in steam and heat transfer analysis. Several expressions for oxide-growth kinetics and different thermal conductivities of scale were considered in calculations. The results indicate that the expression for oxide-growth kinetics can affect the estimated results significantly, and the thermal conductivity of scale has relatively small influence on the prediction of scale growth, but the influence degree increases with time.

High Temperature Oxidation of Fe-9Cr-1Mo Steel in Liquid Metal

2008 ◽  
Vol 595-598 ◽  
pp. 519-528 ◽  
Author(s):  
Laure Martinelli ◽  
Fanny Balbaud-Célérier ◽  
Gerard Picard ◽  
Gerard Santarini
Keyword(s):  
Oxide Scale ◽  
Oxidation Kinetics ◽  
Oxidation Mechanism ◽  
Lattice Diffusion ◽  
Experimental Results ◽  
Liquid Lead ◽  
Regulation Mechanism ◽  
Scale Growth ◽  
Temperature Oxidation ◽  
Steel Oxidation

The oxidation mechanism of the T91 martensitic steel in oxygen-saturated Pb-Bi eutectic at 470°C has been investigated to develop a long term predictive model of the steel oxidation kinetic. This work is performed in the frame of life duration studies carried out for the MEGAPIE spallation module demonstrator dedicated to the feasibility demonstration of an hybrid reactor. Our scientific approach has been based on an experimental characterization of the oxide scales and of the T91 steel oxidation kinetics. From these experimental results, an oxidation mechanism has been elaborated and then simulated. The oxide scale formed at the T91 surface has a duplex structure, constituted of an external magnetite scale and an internal Fe-Cr spinel scale. A scale growth mechanism has been proposed: the magnetite scale growth seems to be limited by the iron lattice diffusion inside the duplex oxide scale. At the same time, a self-regulation mechanism seems to govern the Fe-Cr spinel scale growth. This mechanism consists of a non-limiting oxygen diffusion step, which is carried out, across the oxide scale, inside liquid lead nano-channels and a limiting iron oxide lattice diffusion step. Considering the proposed oxidation mechanism, a simulation of the growth of the two oxides scales has been carried out and compared to the experimental oxidation kinetics. The excellent agreement between the experimental results and the simulations supports to accept the proposed mechanism, leading to prediction of kinetics for long oxidation durations.

Determination of correlation functions of the oxide scale growth and the temperature increase

2011 ◽  
Vol 18 (8) ◽  
pp. 2260-2271 ◽  
Author(s):  
B.H. Salman ◽  
M.Z. Hamzah ◽  
J. Purbolaksono ◽  
J.I. Inayat-Hussain ◽  
H.A. Mohammed ◽  
...  
Keyword(s):  
Oxide Scale ◽  
Correlation Functions ◽  
Temperature Increase ◽  
Scale Growth

Role of interface structure and interfacial defects in oxide scale growth

1995 ◽  
Vol 44 (1-2) ◽  
pp. 63-79 ◽  
Author(s):  
Bernard Pieraggi ◽  
Robert A. Rapp ◽  
John P. Hirth
Keyword(s):  
Oxide Scale ◽  
Interface Structure ◽  
Scale Growth ◽  
Interfacial Defects
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