无机材料学报2011，Vol.26Issue(9)：902-906,5.DOI:10.3724/SP.J.1077.2011.00902
反应法制备硼化锆耐超高温涂层
Reactive Preparation and Properties of ZrB2 Coating
摘要
Abstract
In order to improve the ablation property of C/SiC composite at ultra high temperatures, ZrB2 coatings upon C/SiC composite were prepared by pasting the slurry of zirconium powder, boron powder and phenolic resin, followed by high temperature sintering. The reactions in the sintering process were investigated, and the component, microstructure and ablation property of the coatings were characterized. The results show that zirconium powder reacts firstly with pyro-lytic carbon to form ZrC till 1200℃, and then ZrC reacts with boron to form ZrB2 during 1400℃-1600℃. When the mole ratio of Zr/B/C is 1.0/1.5/1.0, the coating sintered at 1600 ℃ is composed of mainly ZrB2, small amount of ZrC and ZrO2. After ablation for 60 s in oxyacetylene torch environment, the C/SiC composite with ZrB2 coating shows a linear recession rate of zero, due to the ZrO2 formation from ZrB2 oxidation, while the C/SiC composite without coating shows a linear recession ratio of 0.064mm/s.关键词
硼化锆/超高温/涂层/抗烧蚀/C/SiCKey words
ZrB2/ ultra high temperature ceramics/ coating/ ablation resistance/ C/SiC composite分类
矿业与冶金引用本文复制引用
赵丹,张长瑞,张玉娣,陈思安,胡海峰..反应法制备硼化锆耐超高温涂层[J].无机材料学报,2011,26(9):902-906,5.基金项目
国家自然科学基金重大研究计划项目(90816020) （90816020）
