Community Research and Development Information Service - CORDIS

Abstract

The acoustic emission technique developed for the previous project to quantify the kinetic energy flow of solid particles was improved to simulate test conditions representative of the aggressiveness of industrial environments.

Abrasion tests performed in a non-corrosive environment show the limits of the method, especially for high impact frequencies and small particle granulometry. However, it does provide highly reproducible test conditions.

Abrasion-corrosion tests were performed on austenitic, compound and martensitic stainless steels in an H(2)SO(4) environment, varying the pH of the solution and the level of abrasion. Tests performed in a slightly corrosive environment (pH=3) showed that the primary damage-causing factor is abrasion, with the contribution to overall damage made by corrosion remaining fairly low. In highly corrosive environments (pH=1), degradation resulting from abrasion-corrosion is caused through the joint action of significant electro-chemical dissolution and mechanical damage from the impact of solid particles. Under these conditions, the chemical composition and the mechanical properties of the alloy become important factors in the choice of materials.

Moreover, the increase in damage caused by corrosion with respect to the loss of total mass from the material when the abrasion rate increases showed that there is a synergy operating between the abrasion and corrosion processes.sses.

Additional information

Authors: AUDOUARD J-P, Creusot-Loire Industrie, Le Creusot (FR) and IRSID, Maizières-lès-Metz (FR)
Bibliographic Reference: EUR 19983 FR (2001), pp. 167. Euro: 25.00
Availability: Available from EUR-OP sales agent URL: http://eur-op.eu
ISBN: ISBN 92-894-1581-9
Record Number: 200114118 / Last updated on: 2001-11-28
Category: PUBLICATION
Original language: fr
Available languages: fr