The Wear Resistance of the Nanocomposite Coatings Obtained by the Cumulative- Detonation Device

Nanocomposite coatings based on Ti, O, C and H were deposited on aluminium samples by using the cumulative-detonation equipment. The nanocomposite coatings were examined by scanning electron microscopy (SEM), transmission electron microscopy (TEM) with diffraction, X-ray phase analysis, hardness measurements and tribotests. It was established that the wear of nanocomposite coatings based on Ti, O, C and H less than to the wear of material of the substrate. For the nanocomposite coating which were formed from the hydrogenated titanium powder was recorded the lowest wear and coefficient of friction. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3515

Structure and the Physico-Mechanical Properties of the Ceramic Coatings Obtained by the Cumulative -Detonation Device

Dense, with good adhesion to the substrate, hard, wear-resistant coatings from the powder of Al2O3 were obtained on the surface of the steel (STE255) by using the cumulative-detonation device. The results of investigations of the structure and physico-mechanical properties of the coatings by using scanning, optical microscopy, X-ray phase analysis, microhardness and tribological tests are presented. It was found that optimization of plasma spraying to helps reduce the porosity of coatings of Al2O3 less than 1 % and to increase the hardness of them to 1250 HV0.3. The tribological investigations have shown that the coatings of Al2O3 significantly increase the wear resistance of the sample STE255 and provide a low ability to wear out the coating. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3546