Fabrication and properties of in-situ pressureless-sintered ZrB2/B4C composites
Fabrication and properties of in-situ pressureless-sintered ZrB2/B4C composites
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原位无压烧结ZrB2/B4C复合材料的制备及性能
DOI：
10.1016/j.ceramint.2017.08.115
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发表时间：
2017-12-01
影响因子：
5.2
通讯作者：
Zhang, Yujun
中科院分区：
文献类型：
--
作者：
Lin, Xiao;Ai, Shuhe;Zhang, Yujun
研究了ZrO 2对无压烧结B4 C陶瓷力学性能的影响。采用亚微米级B4 C粉末、酚醛树脂为粘结剂、亚微米级ZrO 2为烧结助剂。结果表明，ZrO 2的加入显著提高了B4 C的致密度和力学性能。当ZrO 2含量为15wt%，2100 ℃烧结60 min时，试样的相对密度最高，达到96.7%，抗弯强度和维氏硬度分别为365.4MPa和34.2GPa。
The effect of ZrO2 addition on the mechanical properties of B4C ceramics prepared by pressureless sintering was investigated. Submicron B4C powders, phenolic resin as binders and submicro-sized ZrO2 as sintering aids were used. Results show that the addition of ZrO2 improves the relative density and mechanical properties of B4C remarkably. The highest relative density was 96.7%, meanwhile bending strength and Vickers hardness of 365.4 MPa and 34.2 GPa, respectively were measured for specimens added with 15 wt% ZrO2 and pressureless sintered at 2100 degrees C for 60 min.