Artículos de revistas
Mechanical and tribological behavior of red clay ceramic tiles coated with fly ash powders by thermal sparying technique
Fecha
2017Registro en:
10.1088/1742-6596/792/1/012026
Autor
Peña Rodriguez, Gabriel
Dulce Moreno, Hector Jaime
Daza Ramirez, Jessica Maria
Orozco Hernandez, Silvia Juliana
Vargas Galvis, Fabio
Institución
Resumen
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.