Mechanical and tribological behavior of red clay ceramic tiles coated with fly ash powders by thermal spraying technique

The mechanical and tribological performance of red clay ceramic tiles uncoated and coated by oxy-fuel thermal spraying process from fly ash powders was evaluated. The ceramic tile substrates were manufactured by uniaxial pressing at 26.17 bar pressure, and sintered at 1100 °C. The coating thickness...

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Bibliographic Details
Published in:Journal of physics. Conference series 2017-01, Vol.792 (1), p.12026
Main Authors: Peña-Rodríguez, G, Dulce-Moreno, H, Daza-Ramírez, J, Orozco-Hernández, S., Vargas-Galvis, F
Format: Article
Language:English
Subjects:
adherence
Bending
Ceramic coatings
Ceramic powders
Ceramic tiles
Ceramics
Clay
deep abrasion wear
Fly ash
fly ash coatings
Mechanical resistance to flexion
Micrometers
Morphology
Oxy-fuel
Oxyacetylene
Physics
Powder spraying
Profilometers
rugosity
Sintering (powder metallurgy)
Substrates
thermal spray
Thermal spraying
Thickness
Tiles
Tribology
Wear resistance
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Summary:The mechanical and tribological performance of red clay ceramic tiles uncoated and coated by oxy-fuel thermal spraying process from fly ash powders was evaluated. The ceramic tile substrates were manufactured by uniaxial pressing at 26.17 bar pressure, and sintered at 1100 °C. The coating thickness was determined based on the number of projection-cycles oxyacetylene flame over substrate. Coal fly ash coatings were deposited, with average thickness of 56.18±12.18 μm, 180.42±20.32 μm, and 258.26±25.88μm. The mechanical resistance to bending and wear by abrasion deep, were studied using ISO 10545-4 standards and ISO 10545-6 respectively; adhesion was measured using Elcometer equipment Type III according to ASTM D-4541-02 and the average roughness (Ra) was found according to ASTM standard D7127-13, using the profilometer Mitutoyo SJ 201. The surface morphology presented the heterogeneous molten or semi molten splats with average size of 35.262±3.48 micrometers with good adhesion, justifying increased mechanical resistance to bending by 5%, as well as wear by abrasion deep. These results contribute to the development of ceramic products with added value, to be used in various technological applications.
ISSN:1742-6588
1742-6596
1742-6596
DOI:10.1088/1742-6596/792/1/012026