HUANG Min, LI Ke-zhi, LI He-jun, HUANG Jian-feng, FU Qian-gang. Yttrium silicate coatings for SiC coated C/C composites prepared by atmospheric plasma spraying. New Carbon Mater., 2010, 25(03): 187-191.
Citation:
HUANG Min, LI Ke-zhi, LI He-jun, HUANG Jian-feng, FU Qian-gang. Yttrium silicate coatings for SiC coated C/C composites prepared by atmospheric plasma spraying. New Carbon Mater., 2010, 25(03): 187-191.
HUANG Min, LI Ke-zhi, LI He-jun, HUANG Jian-feng, FU Qian-gang. Yttrium silicate coatings for SiC coated C/C composites prepared by atmospheric plasma spraying. New Carbon Mater., 2010, 25(03): 187-191.
Citation:
HUANG Min, LI Ke-zhi, LI He-jun, HUANG Jian-feng, FU Qian-gang. Yttrium silicate coatings for SiC coated C/C composites prepared by atmospheric plasma spraying. New Carbon Mater., 2010, 25(03): 187-191.
HUANG Min(1979-), female, Candidate for Ph. D. engage in research of high temperature oxidation resistant coating for Carbon/Carbon Composites, E-mail: huangmin@mail.nwpu.edu.cn
Different yttrium silicate coatings for SiC-coated C/C composites were designed and prepared by an atmospheric plasma spray method to prevent the C/C composites from oxidation. XRD profiles showed that the coating was composed of Y2SiO5, Y2Si2O7, and Y4Si3O12. SEM showed that the gradient SiC/Y4Si3O12/Y2Si2O7/Y2SiO5 coating had a more compact surface than the other coatings did. Isothermal oxidation tests at 1500℃ in air showed that the weight loss curves of the as-prepared C/C composites showed a linear tendency with time and the weight loss rate of all coated samples increased significantly after 73h. The coating could protect the C/C composites from oxidation at 1500℃ for 73h in air with a weight loss rate of 1.01×10-4g · cm-2 · h-1. The SiC/Y4Si3O12/Y2Si2O7/Y2SiO5 was the better coating at high temperature than other coatings.