无机材料学报2018，Vol.33Issue(5)：545-549,5.DOI:10.15541/jim20170304
反应烧结B4C/Al2O3复合陶瓷的装甲防护性能研究
Ballistic Performance of B4C/Al2O3Composite Ceramic Prepared by Reaction Sintering
摘要
Abstract
Dense B4C ceramic matrix composites were synthesized by reactive hot press sintering at the tempera-ture of 1800℃ and the pressure of 35 MPa using commercial available B2O3, Al, graphite, and B4C as raw materi-als. Microstructure, phase composition and mechanical properties were observed and tested. The composite ceram-ics were penetrated by a 7.62 mm calibre armor-piercing bullet at restrained and unrestrained states. Then the pro-tection factor was calculated according to the rules of DOP method. In comparison, the ballistic performances of AZ ceramic and monolithic B4C were also investigated. The results indicated that the main phase of the as-prepared sample was B4C (~70wt%) and the secondary phase was Al2O3. A complex intermediate phase contained Al-B-O was found filled in the holes between the main phase and the secondary phase. Density, hardness, bending strength and fracture toughness of the composite were 2.82 g/cm3, 41.5 GPa, 380 Mpa, and 3.9 MPa·m1/2, respectively. The fracture toughness significantly increased by 85.7s% as compared with that of the pure B4C (2.1 MPa·m1/2). The protection factor of the composite ceramic gets 11% and 70% increase compared to those of AZ ceramic and mono-lithic B4C, respectively. At restrained states, the protection factors of all the samples are further improved by about 10%. These results suggested that B4C/Al2O3composite ceramic prepared by reactive hot press sintering method might be a good ceramic armor material.关键词
碳化硼/复相陶瓷/力学性能/约束/防护系数Key words
B4C/composite ceramic/mechanic property/restrained state/protection factor分类
通用工业技术引用本文复制引用
孙川,万春磊,潘伟,宗鹏安,李云凯,周士猛..反应烧结B4C/Al2O3复合陶瓷的装甲防护性能研究[J].无机材料学报,2018,33(5):545-549,5.基金项目
国家自然科学基金(51702183,041302428)National Natural Science Foundation of China(51702183,041302428) （51702183,041302428）
