B K , Prasad and Dr., O. P. Modi and Mondal, D P and S , Das and Jha, A.K and Dr., A H Yegneshwaran (2001) Erosion- corrosion- abrasion characteristics in slurry of a zinc based alloy and its composite containing alumina particle dispersoid. Material Science and Technology.
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This study presents observations made pertaining to the slurry wear behaviour of a zinc based alloy and its composite containing dispersed alumina particles. The influence of varying the sand concentration in the medium and the traversal distance on the response of the specimens has also been investigated. Wear rate increased initially with traversal (sliding) distance, attained a peak, and then decreased thereafter at longer traversal distances. This trend was much more pronounced when tests were conducted in a liquid only medium than in liquid with sand. The presence of suspended sand particles in the test environment led to a considerably reduced wear rate of the specimens when compared with that of the liquid only medium. Furthermore, intermediate sand content caused the maximum wear rate within the slurries, although it was substantially less than that caused by the liquid only medium. A comparison of the wear response of the composite and the matrix alloy suggested a mixed trend in the liquid only medium and the slurry with 60 wt-% sand. The composite exhibited a lower wear rate than the matrix alloy when tested in slurries with 20 and 40 wt-% suspended sand particles. The observed wear response of the specimens has been discussed in terms of specific characteristics, such as susceptibility to corrosion and hardness of various phases, and the interfacial effects in the specimens. The changing nature of the medium, such as the corrosivity and impinging/abrading efficiency, has also been discussed. Analysis of the affected surfaces and subsurface regions of typical specimens by SEM enabled the understanding of the operating wear mechanisms under specific test conditions and thereby it was possible to substantiate the observed wear characteristics of the specimens.
| Item Type: | Article |
|---|---|
| Subjects: | Material/Component Development, Processing and Characterization > Tribology Material/Component Development, Processing and Characterization > Zinc-Based Alloys |
| Divisions: | UNSPECIFIED |
| Depositing User: | Mr. B.K. Prasad |
| Date Deposited: | 15 Jan 2014 12:19 |
| Last Modified: | 27 Feb 2014 07:24 |
| URI: | http://ampri.csircentral.net/id/eprint/999 |
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