Browsing by Author "Dulce Moreno, Hector Jaime"

In this article is used the sacrificial material method to generate different porosities between 44.42% and 69.14% in ceramics based on expansive clays from San Jose de Cúcuta metropolitan area, Colombia, to analyze the ...

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 ...

Effect of concentration of starch in the properties morphological and structural of porous ceramic based on expansive clays
...
Peña Rodriguez, Gabriel | 2020-03-06

In this article is used the sacrificial material method to generate different porosities between 44.42% and 69.14% in ceramics based on expansive clays from San Jose de Cúcuta metropolitan area, Colombia, to analyze the effect of concentration of starch (porogenic agent) in the morphological and structural properties using calcium carbonate as a stabilizer. The porous ceramics was characterized by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy. Finally, the images were analyzed with the software Image J, Image Tool and Origin. The results showed that the weight concentration of starch has a relationship with the average pore size, the number of pores and the porous area of the samples where the percentage of porous area and the average pore size of the mixtures increases as starch is added due to the decay of the sacrificial material. The number of pores of the mixtures decreased by increasing the weight concentration of the starch due to the agglomeration of the starch.

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Mechanical and tribological behavior of red clay ceramic tiles coated with fly ash powders by thermal sparying technique
...
Peña Rodriguez, Gabriel | 2017

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.

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Browsing by Author "Dulce Moreno, Hector Jaime"

Effect of concentration of starch in the properties morphological and structural of porous ceramic based on expansive clays

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

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Effect of concentration of starch in the properties morphological and structural of porous ceramic based on expansive clays

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

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Browsing by Author "Dulce Moreno, Hector Jaime"

Effect of concentration of starch in the properties morphological and structural of porous ceramic based on expansive clays ﻿

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

Envíos recientes

Effect of concentration of starch in the properties morphological and structural of porous ceramic based on expansive clays

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

Portales Institucionales

Effect of concentration of starch in the properties morphological and structural of porous ceramic based on expansive clays

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