Surface Modification of ZrB2-SiC Ceramics for Improving Their Corrosion Resistance.

Autor: Neshpor, I. P., Mosina, T. V., Grigoriev, O. M., Vedel, D. V., Vasin, A. V., Rusavsky, A. B., Nazarov, O. M.
Předmět:
Zdroj: Powder Metallurgy & Metal Ceramics; Sep2018, Vol. 57 Issue 5/6, p277-284, 8p
Abstrakt: To improve the corrosion resistance of the ZrB2-15 vol.% SiC composite, SiC, SiOC, and SiO2-Er2O3 coatings were deposited on its surface by magnetron sputtering. The surface modification of the ZrB2-15 vol.% SiC ceramics improves their corrosion resistance through the development of a dense layer consisting of high-temperature phases formed in the oxidation process. In addition, the mechanical properties become twice as high (bending strength of the coated samples is 803-875 MPa). X-ray diffraction and scanning electron microscopy were used to examine the phase composition of the oxidation products and the structure of the resultant oxide film. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
Externí odkaz: