| SPS反应烧结HfB2复合材料的制备和性能 |
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| 引用本文： | 马世晨,赵笑统,邵刚,王海龙,许红亮,卢红霞,范冰冰,张锐.SPS反应烧结HfB2复合材料的制备和性能[J].稀有金属材料与工程,2020,49(2):550-554. |
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| 作者姓名： | 马世晨 赵笑统 邵刚 王海龙 许红亮 卢红霞 范冰冰 张锐 |
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| 作者单位： | 郑州大学 材料科学与工程学院,郑州大学 材料科学与工程学院,郑州大学 材料科学与工程学院,郑州大学 材料科学与工程学院,郑州大学 材料科学与工程学院,郑州大学 材料科学与工程学院,郑州大学 材料科学与工程学院,郑州航空工业管理学院 |
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| 基金项目： | 国家自然科学基金(51772275)；河南省高校科技创新人才(15HASTIT009)；中国博士后科学基金(2016T90677和2014M561997) |
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| 摘 要： | 针对HfB2陶瓷材料难烧结和韧性差等问题,选择ZrC粉、Si粉和C粉为烧结助剂,借助ZrC-Si-C间的原位反应生成ZrSi2和SiC,促进HfB2陶瓷的烧结,并提高HfB2陶瓷的综合力学性能。结果表明,HfB2与烧结助剂的混合粉体经放电等离子烧结(SPS)在1600℃保温10 min和40 MPa的压力条件下制备出相对密度为96.6 1%的HfB2-ZrSi2-SiC复合材料,所制样品的硬度、抗弯强度和断裂韧性均随着烧结助剂ZrC-Si-C含量的增加呈现先上升后降低的趋势。当ZrC-Si-C添加量为10%时所制备样品的综合力学性能最好,其硬度值为26.80±1.2 GPa、抗弯强度为504±40 MPa、断裂韧性值为4.66±0.21 MPa·m1/2。
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| 关 键 词： | 二硼化铪 放电等离子烧结 原位反应 力学性能 |
| 收稿时间： | 2019/3/15 0:00:00 |
| 修稿时间： | 2019/3/15 0:00:00 |
Preparation and Properties of HfB2-ZrSi2-SiC Composites Fabricated by Reactive Spark Plasma Sintering |
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| Shichen M,Xiaotong Zhao,Gang Shao,Hailong Wang,Hongliang Xu,Hongxia Lu,Bingbing Fan and Rui Zhang.Preparation and Properties of HfB2-ZrSi2-SiC Composites Fabricated by Reactive Spark Plasma Sintering[J].Rare Metal Materials and Engineering,2020,49(2):550-554. |
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| Authors: | Shichen M Xiaotong Zhao Gang Shao Hailong Wang Hongliang Xu Hongxia Lu Bingbing Fan and Rui Zhang |
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| Affiliation: | School of Materials Science and Engineering,Zhengzhou University,School of Materials Science and Engineering,Zhengzhou University,School of Materials Science and Engineering,Zhengzhou University,School of Materials Science and Engineering,Zhengzhou University,School of Materials Science and Engineering,Zhengzhou University,School of Materials Science and Engineering,Zhengzhou University,School of Materials Science and Engineering,Zhengzhou University,Zhengzhou University of Aeronautics |
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| Abstract: | ZrC,Si and C powders were used as the sintering aids to enhance the densification and the mechanical properties of HfB2,using the in-situ reaction between ZrC-Si-C at sintering temperature.The result shows dense HfB2-ZrSi2-SiC ceramic composites are fabricated by reactive spark plasma sintering at 1600℃ for 10 min under a pressure of 40 MPa.With increasing the amount of ZrC-Si-C,the Vickers hardness,the flexural strength and fracture toughness of the sintered samples increase first,and then decrease.HfB2-10 wt% ZrC-Si-C composite shows the best comprehensive mechanical properties.The Vickers hardness,flexural strength and fracture toughness of HfB2-10% ZrC-Si-C composites are 26.80±1.2 GPa,504±40 MPa and 4.66±0.21 MPa·m1/2,respectively. |
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| Keywords: | HfB2 Spark Plasma Sintering In-situ reaction Mechanical properties |
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