Overview
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ABSTRACT
After reviewing the construction principles of nitrided layers, the compound layer and diffusion layer, the terminology used in accordance with the elements involved, as well as the main objectives of this construction and the main properties induced, the various industrial processes (salt baths, gas and plasma-assisted) and their use in industrial conditions are described.
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Read the articleAUTHOR
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Claude LEROUX: Engineer from the Conservatoire National des Arts et Métiers (CNAM)
INTRODUCTION
Nitriding and nitrocarburizing, whose mechanisms are described in
Hardening of the treated layer is achieved by in situ transformation during diffusion, so no further treatment is required. The nitriding process involves two mechanisms: a combination (or conversion) mechanism, which has been and still is the subject of numerous fundamental studies
This first article describes the various industrial processes and their industrial practices. In a second article
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KEYWORDS
nitriding | nitrocarburising | sulfonitriding | oxynitriding | compound layer or diffusion layer | ionic nitriding | gas nitriding
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Metal treatments
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Nitriding and nitrocarburizing
Bibliography
Standards and norms
French Standards Association (AFNOR)
PSA
- Nitruration - 315-2240 - 02.85
- Nitruration des aciers - 02-60-206 - 01.93
- Spécification technique pour la nitruration et les nitrocarburations des dentures d'engrenages - DN1 - 12.88
Renault
CETIM – UNITRAM
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GAZECHIM
L'Air Liquide – Multi-Gaz
Linde – Gas
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