多孔TiC/NiAl复合材料的孔洞形貌及抗压强度

doi:10.13251/j.issn.0254-6051.2020.05.001

金属热处理 ›› 2020, Vol. 45 ›› Issue (5): 1-4.DOI: 10.13251/j.issn.0254-6051.2020.05.001

• 组织与性能 • 下一篇

多孔TiC/NiAl复合材料的孔洞形貌及抗压强度

郭丰雪¹, 吴杰¹, 陈蕴博^2,3, 左玲立^2,3, 刘晓萍³

1. 山东科技大学材料科学与工程学院, 山东青岛 266590;
2. 北京机科国创轻量化科学研究院有限公司, 北京 100083;
3. 山东隆基机械股份有限公司, 山东龙口 265700

收稿日期:2020-02-05 出版日期:2020-05-25 发布日期:2020-09-02
通讯作者: 吴杰,副教授,博士,E-mail:wujie0537@163.com
作者简介:郭丰雪(1992—),女,硕士研究生,主要研究方向为多孔金属间化合物及其复合材料,E-mail:guofengxue123@126.com。
基金资助:
山东省自然科学基金面上项目(ZR2014EMM009);山东省泰山产业领军人才2017

Pore morphologies and compressive strength of TiC/NiAl porous composites

Guo Fengxue¹, Wu Jie¹, Chen Yunbo^2,3, Zuo Lingli^2,3, Liu Xiaoping³

1. School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao Shandong 266590, China;
2. Beijing National Innovation Institute of Lightweight Ltd., Beijing 100083, China;
3. Shandong Longji Machinery Co., Ltd., Longkou Shandong 265700, China

Received:2020-02-05 Online:2020-05-25 Published:2020-09-02

摘要/Abstract

摘要： 通过控制Ti、C、Ni、Al粉末之间的反应,利用自蔓延技术原位合成多孔TiC/NiAl复合材料,研究Ti-C(摩尔比1∶1)含量对多孔材料孔洞形貌和抗压强度的影响。结果表明:多孔材料孔洞形貌主要受反应物吸附气体挥发和液相流动的影响,Ti-C含量增加,孔隙率和孔径增大。当Ti-C含量为0～25%时,孔洞分布均匀,形貌以近球形为主,孔径大小在20～70 μm之间;多孔材料抗压强度随Ti-C含量增加逐渐增大。当Ti-C含量为30%时,除近球形孔洞外,还出现了一些尺寸大于100 μm的形状不规则孔洞和狭长形孔洞,抗压强度下降。

关键词: 自蔓延, 多孔TiC/NiAl复合材料, 孔洞形貌, 抗压强度

Abstract: TiC/NiAl porous composites were synthesized in situ by self-propagating technology through controlling the reaction among Ti, C, Ni and Al powers. Influences of Ti-C contents (molar ratio 1∶1) on the pore morphologies and compressive strength of the porous materials were investigated. The results show that the pore morphology of the porous materials is mainly affected by the volatilization of adsorbed gases and the flow of liquid phase, the porosity and pore size increase with the increase of Ti-C content. When Ti-C content is 0-25%, the distribution of pores with near spherical morphology is uniform, and the pore size ranges between 20-70 μm, the compressive strength of the porous material increases with the increase of Ti-C content. When Ti-C content is 30%, besides the near spherical pores, some irregular and long narrow pores larger than 100 μm are formed, and the compressive strength decreases.

Key words: self-propagating, TiC/NiAl porous composites, pore morphology, compressive strength

中图分类号:

TB333

郭丰雪, 吴杰, 陈蕴博, 左玲立, 刘晓萍. 多孔TiC/NiAl复合材料的孔洞形貌及抗压强度[J]. 金属热处理, 2020, 45(5): 1-4.

Guo Fengxue, Wu Jie, Chen Yunbo, Zuo Lingli, Liu Xiaoping. Pore morphologies and compressive strength of TiC/NiAl porous composites[J]. Heat Treatment of Metals, 2020, 45(5): 1-4.

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多孔TiC/NiAl复合材料的孔洞形貌及抗压强度

Pore morphologies and compressive strength of TiC/NiAl porous composites

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