High-temperature crack-healing behaviour and strength recovery of (MoNb)Si2

High-temperature crack-healing behaviour and strength recovery of (MoNb)Si2
复制标题

(MoNb)Si2 的高温裂纹愈合行为和强度恢复

DOI:
10.1016/j.apsusc.2015.03.064
复制
发表时间:
2015-07
影响因子:
6.7
通讯作者:
Peizhong Feng
Peizhong Feng
中科院分区:
材料科学1区
文献类型:
--
作者:
Xiaohong Wang;Qiong Lu;Guangzhi Wu;Peizhong Feng

文献摘要

参考文献

被引文献

相似文献

采用燃烧合成和真空热压技术制备了(MoNb)Si2材料。使用维氏压痕法在抛光材料的表面引入裂纹。研究了(MoNb)Si2材料在空气中高温氧化的裂纹愈合行为。结果表明,在900℃、1200℃和1500℃退火1小时后,每种情况下都观察到裂纹愈合行为。引入裂纹时弯曲强度明显下降,热处理后材料显着恢复。经过 1200°C 处理后,裂纹愈合的样品表现出比原始水平更高的弯曲强度,例如479 MPa 对比纯 MoSi2 的 195 MPa。 MoSi2微铌合金在室温下表现出高弯曲强度,在高温下表现出优异的裂纹愈合性能。
(MoNb)Si2materials were prepared using combustion synthesis and the vacuum hot-pressing technology. Cracks were introduced on the surface of polished materials using the Vickers indentation method. The crack-healing behaviour of (MoNb)Si2materials were investigated with high-temperature oxidation in air. The results show that after annealing at 900 °C, 1200 °C and 1500 °C for 1 h, the crack-healing behaviour was observed in each case. The bending strength obviously decreased when the cracks were introduced, and the materials significantly recovered after the heat treatment. The crack-healed samples exhibited higher bending strengths than the original level after the 1200 °C treatment, e.g. 479 MPa versus 195 MPa of pure MoSi2. MoSi2micro alloyed with niobium shows a high bending strength at room temperature and excellent crack-healing properties at high temperatures.
DOI: 10.1016/s0955-2219(03)00221-8
发表时间: 2004
期刊: --
影响因子: --
作者:
A. Shan;H. Hashimoto;Y. Park
通讯作者: A. Shan;H. Hashimoto;Y. Park
DOI: 10.1016/s0921-5093(03)00307-1
发表时间: 2003-10
影响因子: 6.4
作者:
A. Sharif;A. Misra;T. Mitchell
通讯作者: A. Sharif;A. Misra;T. Mitchell
DOI: 10.1016/j.jeurceramsoc.2008.12.009
发表时间: 2009-07
影响因子: 5.7
作者:
K. Hellström;Jun Tang;T. Jonsson;M. Halvarsson;R. Pompe;M. Sundberg;J. Svensson
通讯作者: K. Hellström;Jun Tang;T. Jonsson;M. Halvarsson;R. Pompe;M. Sundberg;J. Svensson
DOI: 10.1111/j.1551-2916.2004.00490.x
发表时间: 2004-03-01
影响因子: 3.9
作者:
Chu, MC;Cho, SJ;Yoon, DY
通讯作者: Yoon, DY
DOI: 10.1111/j.1460-2695.2004.00785.x
发表时间: 2004-07-01
影响因子: 3.7
作者:
Ando, K;Kim, BS;Takahashi, K
通讯作者: Takahashi, K