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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复合材料的工艺和性能研究[J].稀有金属材料与工程(英文),2020,49(2):550~554.[Shichen Ma,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.]
Preparation and Properties of HfB2-ZrSi2-SiC Composites Fabricated by Reactive Spark Plasma Sintering
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Received:March 15, 2019  Revised:March 15, 2019
DOI:
Key words: HfB2  Spark Plasma Sintering  In-situ reaction  Mechanical properties
Foundation item: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)
Author NameAffiliation
Shichen Ma,Xiaotong Zhao,Gang Shao,Hailong Wang,Hongliang Xu,Hongxia Lu,Bingbing Fan and Rui Zhang  
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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, due to the in-situ reaction between ZrC-Si-C at sintering temperature. Dense HfB2-ZrSi2-SiC ceramic composites have been fabricated by reactive spark plasma sintering at 1600 ℃ for 10 min under a pressure of 40 MPa. With the amount of ZrC-Si-C increasing, the Vickers hardness, the flexural strength and fracture toughness of the sintered samples increased first, then decreased. HfB2-10wt.% ZrC-Si-C composites showed the the best comprehensive mechanical properties. The Vickers hardness, flexural strength and fracture toughness of HfB2-10wt.% ZrC-Si-C composites were 26.80±1.2 GPa, 504±40 MPa and 4.66±0.21 MPa.m1/2, respectively.