| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1470207 | Corrosion Science | 2009 | 7 Pages |
Abstract
An amorphous boron carbide (a-BC) coating was prepared by LPCVD process from BCl3–CH4–H2–Ar system. XPS result showed that the boron concentration was 15.0 at.%, and carbon was 82.0 at.%. One third of boron was distributed to a bonding with carbon and 37.0 at.% was dissolved in graphite lattice. A multiple-layered structure of CVD SiC/a-BC/SiC was coated on 3D C/SiC composites. Oxidation tests were conducted at 700, 1000, and 1200 °C in 14 vol.% H2O/8 vol.% O2/78 vol.% Ar atmosphere up to 100 h. The 3D C/SiC composites with the modified coating system had a good oxidation resistance. This resulted in the high strength retained ratio of the composites even after the oxidation.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yongsheng Liu, Litong Zhang, Laifei Cheng, Wenbin Yang, Weihua Zhang, Yongdong Xu,