Erosion behavior of thermal sprayed, recycled polymer and ethylene–methacrylic acid composite coatings

Lins, Vanessa F.C., Branco, José R.T., Diniz, Flávio R.C., Brogan, J.C., and Berndt, Christopher C. (2007) Erosion behavior of thermal sprayed, recycled polymer and ethylene–methacrylic acid composite coatings. Wear, 262 (3-4). pp. 274-281.

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Polymer consumption is increasing and the recycling rate is 30–40 wt.%. Thus any process or application that uses recycled plastic residue will be looked upon with favor. It has been demonstrated that post-consumer commingled polymer, or PCCP, coatings can be produced by thermal spraying. Furthermore, polymeric coatings are widely used as protective coatings against solid particle erosion. Therefore, in this paper the erosion behavior of thermal spray coatings that have some PCCP material is investigated. The coatings were produced using a low velocity combustion thermal spray process and a PCCP mixed with different levels of virgin ethylene–methacrylic acid co-polymer (EMAA). The erosion rates using 50 μm alumina were determined at impact angles of 30° and 90°. The wear features were analyzed by scanning electron microscopy and profilometry. The results exhibited brittle wear features, consistent with the relationship between erosion rates and mechanical properties of the polymers. However, a decrease in erosion rate with an increase in impact angle, from 30° to 90°, indicates ductile behavior during erosion.

Item ID: 2539
Item Type: Article (Research - C1)
ISSN: 1873-2577
Keywords: erosion; post-consumer commingled polymeric coatings; ethylene–methacrylic acid co-polymer; low velocity combustion thermal spraying
Date Deposited: 23 Jul 2009 02:08
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091207 Metals and Alloy Materials @ 60%
09 ENGINEERING > 0914 Resources Engineering and Extractive Metallurgy > 091499 Resources Engineering and Extractive Metallurgy not elsewhere classified @ 40%
SEO Codes: 87 CONSTRUCTION > 8703 Construction Materials Performance and Processes > 870302 Metals (e.g. Composites, Coatings, Bonding) @ 100%
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