Abstract
ZrO2p(3Y)/BN–SiO2 composite ceramics were prepared by hot pressed sintering. The Kr plasma was incident normally to the sample surface to measure the plasma erosion resistance, and XRD, TEM, SEM were used to characterize the phase composition and morphology of composite ceramics before and after Kr plasma erosion. The composites were composed of h-BN, amorphous SiO2, m-ZrO2 and t-ZrO2, which keep stability in the process of Kr plasma sputtering. Two kinds of zirconia phases (t-ZrO2, m-ZrO2) and lamellar h-BN evenly distributed in ZrO2p(3Y)/BN–SiO2 composite ceramics, and the lath microstructures were observed in m-ZrO2 particles. The plasma erosion resistances of ceramic composites increase significantly with the increase of ZrO2 content. Pits with diameter sizes of several micrometers were observed on the surface of composites after plasma sputtering, which indicate that one or several grains are sputtered out during the plasma sputtering process. The edges of the grains become smoother for the preferential sputtering to the sharp edge of the grains during plasma sputtering.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
