Matériaux & Techniques
Volume 73, Number 4-5, 1985
|Page(s)||217 - 222|
|Published online||21 April 2017|
Boruration des aciers et cermets : le traitement « Borudif »
Application of the « borudif » boriding-process to steels and cermets
Equipe Céramiques Spéciales et Traitements de Surface,
Ecole Nationale Supérieure des Mines, Saint-Etienne.
A steel bonding process (Borudif) is described which is based upon the moderated activation (BF3 and SiO2) of boron carbide B4C. On carbon steels this technique has the advantage of forming a single phase acicular layer of Fe2B. It may also be applied to alloy steels and cermets. There is no adhesion between the reactants and the treated components, giving a better surface finish, no wasting of the powder ; the possibility of gaseous phase bonding improves the surface finish. The costs are five times less in raw materials than directly competitive methods. Analytical, physico-chemical (X-ray, metallography, electron probe analysis, glow discharge spectroscopy) and mechanical investigations (micro-hardness, torsion, traction, bend and wear tests) were performed to characterize the nature, composition, morphology and adherence of the bonded layers.
Boronized steels may be used for all components requiring frictional wear resistance, molten salts (cryolite). Our process is competitive with other boronizing, chromising, nitriding... technics.
© SIRPE 1985
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.