Interaction of energetic oxygen with different boron/carbon materials
Pure graphite (EK 98), boron-droped graphite (3%B, 15%B, 20%B), thin boron/carbon layers (a-C/B:H films) and B(4)C were irradiated with energetic oxygen ions of 1-5 keV to study the erosion and retention behaviour of energetic oxygen. The reaction of O(+) ions with these materials leads mainly to the formation of volatile CO and CO(2) together with physically sputtered carbon, boron and boron oxide species. Compared with graphite, the retention of oxygen in the boron/carbon materials is higher and the reemission of CO and CO(2) is delayed after starting the bombardment. The thermal desorption of the implanted oxygen in the form of CO occurs in addition to the normal CO peak at 950 K and a second peak at about 1600 K. At these high temperatures BO, B(2)O(2) and B(2)O(3) (peaked between 1200 K and 1400 K) are also desorbed.
Bibliographic Reference: Article: Journal of Nuclear Materials, Vols. 212-215 (1994) pp. 1255-1259
Record Number: 199411564 / Last updated on: 1995-01-10
Original language: en
Available languages: en