Overview
ABSTRACT
Hot corrosion of metals and alloys is one of the main causes of degradation of aeronautical and land turbine parts as well as components of waste-to-energy plants. This form of degradation is often more severe than dry oxidation and results in the formation of a corrosive deposit on the surface of the parts and attacks the alloy and its protective oxide layer. Currently, although some testing facilities at laboratory and industrial scale exist, this subject remains little studied. This article reviews the various hot corrosion test methods available in France and around the world.
Read this article from a comprehensive knowledge base, updated and supplemented with articles reviewed by scientific committees.
Read the articleAUTHORS
-
Tom SANVIEMVONGSAK : Doctoral research and development engineer - IRT M2P, Metz, France
-
Pascal LAMESLE : Doctor, Technical and Scientific Director - IRT M2P, Metz, France
-
Michel VILASI : University Professor, - Institut Jean Lamour, University of Lorraine, Nancy, France
-
Clara DESGRANGES : Doctor of Advanced Materials Engineering - Safran Tech, Magny-les-Hameaux, France
INTRODUCTION
Increasing the energy efficiency of turbomachinery, furnaces and boilers is a major challenge for manufacturers in the aerospace, transport and energy sectors. To achieve this objective, the components of these installations exposed to combustion gases are subjected to increasingly high mechanical stresses and temperatures, resulting in a need for more refractory materials. Indeed, these high-temperature stresses can lead to material degradation through fatigue and creep, and/or oxidation and hot corrosion. The resistance of these alloys to this environment has a major impact on their mechanical properties and, consequently, on the service life of parts.
The choice of refractory materials is an essential step in guaranteeing the longevity of mechanical systems, but the key is to be able to test them under conditions close to actual operating conditions. There are now numerous test facilities for testing alloys under high-temperature air oxidation conditions, but very few for high-temperature corrosion testing under "complex" atmospheres (corrosion by a mixture of gases, corrosive deposits or molten salts). This article reviews the various hot corrosion test facilities available in France and around the world. It presents the strengths and limitations of the various test benches.
In 2021, it should be noted that, although hot corrosion tests are carried out throughout the world, no standard governs the experimental methodology or operation of these test benches, even though the term is defined in standard NF EN ISO 8044 .
This article provides additional information to the articles :
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
KEYWORDS
Hot corrosion | Test facilities | Burner rig | High temperature mechanical stress facilities
Hot corrosion of metals and alloys - State of the art of testing facilities
Definition of hot corrosion
Bibliography
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
Article included in this offer
"Corrosion - Aging"
(
106 articles
)
Updated and enriched with articles validated by our scientific committees
A set of exclusive tools to complement the resources
