摘要
从Ca-O-N、Zr-O-N、Ti-O-N及B-O-N的叠加的优势区图可以看出CaO-ZrO2-TiO2-BN体系在1823K下可以稳定存在.XRD分析结果表明氧化物之间高温下形成了复杂的化合物或固溶体.应用FactSage软件计算CaO-ZrO2-TiO2三元相图得出,通过控制TiO2的加入量,能够将体系控制在高温固相区,可用作水口材料.由于钢水中[Al]的存在,BN在连铸过程中不会被水口内部达到平衡时的游离O2以及钢中溶解[O]所氧化.
It is found that CaO-ZrO2-TiO2-BN system can stably exist at 1823 K from the overlapped phase stability diagram of Ca-O-N, Zr-O-N, Ti-O-N and B-O-N systems. XRD analysis results indicate that oxides in the system form complex compounds or solid solution. The phase diagram of CaO-ZrO2-TiO2 was Calculated by FactSage software, and the results show that the system can be controlled in solid section at high temperature through controlling TiO2 quantity. During continuous casting, BN cannot be oxidized by O2 or [O] because of the existence of [Al] in molten steel.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2008年第8期916-920,共5页
Journal of University of Science and Technology Beijing
关键词
氧化钙
氧化锆
氧化钛
氮化硼
四元体系
优势区图
三元相图
calcium oxide
zirconium oxide
titanium oxide
boron nitride
quaternary system
phase stability diagram
ternary phase diagram
