Abstract
In this paper we describe the erosion and surface relief transformation of MPG-8 type graphite, as well as the sputtering properties of B 4C and of the modified carbonic fibre material, KUP-VM + 5 at% TiC, under He + and He +/O 2 irradiation. Experiments were carried out in a gas discharge. We found an increase of the erosion rate of MPG-8 surface under He +/O 2 bombardment, along with a growth of the incoming O 2 flux in the range (0.5–2.0) × 10 16 mol O 2 cm 2 s. At T = 1200 K the sputtering yield of MPG-8 (He +/O 2, jo 2 = 1 × 10 16mol O 2/cm 2s) reached S = 1.6 at/ion. The relative increase of the MPG-8 sputtering yield in the presence of oxygen was much higher than that of B 4C and KUP-VM + 5 at% TiC. On the MPG-8 surface, irradiated both by He +/O 2 and O 2 beams, porosity was observed.
Sign-in/Register to access full text options 
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.
