Title :
Effect of boron ion implantation on oxidation resistance of CVD-SiC coated 2D-C/C composites
Author :
Zhu, Y.-C. ; Ohtani, S. ; Sato, Y. ; Iwamoto, N.
Author_Institution :
Ion Eng. Res. Inst. Corp., Osaka, Japan
Abstract :
Two-dimensional carbon-fiber reinforced carbon (C/C) composites were implanted with boron ions with 70 to 360 keV energy, then annealed in an argon atmosphere at 1500°C, and finally coated by a CVD-SiC coating of 50 μm. Isothermal and cyclic oxidation tests were performed on CV-SiC coated C/C composites in flowing dry air at 1350°C. The CVD-SiC coated C/C composites with boron ion implantation exhibited largely lower weight loss than those with a direct SiC coating. A thin boron carbide layer was formed in the surface region of C/C composites by boron ion implantation. This boron carbide layer was found to contribute to enhancing the oxidation resistance of CVD-SiC coated C/C composites
Keywords :
boron; carbon fibre reinforced composites; composite material interfaces; ion implantation; oxidation; silicon compounds; 1350 C; 1500 C; 50 mum; 70 to 360 keV; B ion implantation; CVD-SiC coated 2D-C/C composites; SiC:B-C; carbon-fiber reinforced carbon composites; oxidation resistance; Annealing; Argon; Atmosphere; Boron; Coatings; Ion implantation; Isothermal processes; Oxidation; Performance evaluation; Testing;
Conference_Titel :
Ion Implantation Technology Proceedings, 1998 International Conference on
Conference_Location :
Kyoto
Print_ISBN :
0-7803-4538-X
DOI :
10.1109/IIT.1998.813887
