桂凯旋,张庆达,朱冬冬,王刚.纳米ZrB2粉体放电等离子烧结制备ZrB2基超高温陶瓷的系统研究[J].稀有金属材料与工程,2020,49(7):2213~2219.[Kaixuan Gui,Qingda Zhang,Dongdong Zhu,Gang Wang.A systematical investigation on the ZrB2-based ultra-high temperature ceramics fabricated by SPS using nanosized ZrB2 powders[J].Rare Metal Materials and Engineering,2020,49(7):2213~2219.]
纳米ZrB2粉体放电等离子烧结制备ZrB2基超高温陶瓷的系统研究
投稿时间:2019-11-26  修订日期:2020-05-25
中文关键词:  硼化锆,超高温陶瓷,放电等离子烧结,碳纤维
基金项目:
中文摘要:
      本文采用纳米ZrB2粉体系统研究了ZrB2基超高温陶瓷的放电等离子烧结行为。由于采用纳米粉体,单相ZrB2在1550℃的低温下即发生快速的致密化烧结。ZrB2-SiC陶瓷经1800℃放电等离子烧结后可实现完全致密化,并且材料的弯曲强度高达1078±162 MPa。在1700℃采用放电等离子烧结成功制备了ZrB2-SiC-Cf复合材料,材料断口表现出明显的纤维拔出现象,导致其具有高的断裂韧性值(6.04 MPa·m1/2)和非脆性断裂的模式。同时,ZrB2-SiC-Cf复合材料具有很高的临界热冲击温差(627℃),表明该材料具有优异的抗热冲击性能。
A systematical investigation on the ZrB2-based ultra-high temperature ceramics fabricated by SPS using nanosized ZrB2 powders
英文关键词:ZrB2, ultra-high temperature ceramics, spark plasma sintering, carbon fiber
英文摘要:
      The spark plasma sintering behaviors of ZrB2-based ultra-high temperature ceramics were systematically investigated using nanosized ZrB2 powders. Rapid densification occurred at low temperature (1550 oC) for monolithic ZrB2 due to the nanosized powders. ZrB2-SiC ceramic achieved full densification at 1800 oC by SPS resulting in a high flexural strength of 1078±162 MPa. ZrB2-SiC-Cf composite was successfully prepared by SPS at 1700 oC. The composite showed obvious fiber pull-out on the fracture surface, leading to a high fracture toughness (6.04 MPa·m1/2) and a non-brittle fracture mode. Meanwhile, a high critical thermal shock temperature difference of 627 oC was obtained for ZrB2-SiC-Cf implying an excellent thermal shock resistance of such material.
作者单位E-mail
桂凯旋 安徽工程大学 guikx@ahpu.edu.cn 
张庆达 安徽工程大学  
朱冬冬 衢州学院  
王刚 安徽工程大学  
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