Effect of Boron Content on Microstructure, Mechanical Properties, and Oxidation Resistance of Mo-Si-B Composites
Effect of Boron Content on Microstructure, Mechanical Properties, and Oxidation Resistance of Mo-Si-B Composites
复制标题
硼含量对Mo-Si-B复合材料微观结构、力学性能和抗氧化性能的影响
DOI:
10.1007/s11665-018-3652-8
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发表时间:
2018-09
影响因子:
2.3
通讯作者:
Jingwen Qiu
中科院分区:
文献类型:
--
作者:
Jianhui Yan Jinxin Huang;Jinxin Huang;Kailing Li;Peng Zhou;Yi Wang;Jingwen Qiu
Mo-Si-B composites with boron content from 0 to 8 wt.% were prepared by spark plasma sintering using Mo, Si, and B elemental powders. The effects of boron content on the phase composition, mechanical properties, and high-temperature oxidation resistance of the Mo-Si-B composites were investigated. The results show the evolution of the major phase constitution of the composites with increasing boron content is in the following sequence: (MoSi2, Mo5Si3) → (MoSi2, Mo5Si3, Mo5SiB2) → (MoSi2, MoB) → (MoSi2, MoB, MoB2). As the boron content increases, both the hardness and flexural strength of the composites increases, but the fracture toughness of the composites gradually decreases. The strengthening mechanisms for the composites are second-phase strengthening and grain refinement strengthening. However, the formation of brittle phases, i.e., Mo5SiB2, MoB, and MoB2, reduces the toughness of the composites. In addition, since a dense barrier layer of SiO2-B2O3formed on the surface of the composites inhibits the inward diffusion of oxygen, B-doped Mo-Si-B exhibits better oxidation resistance compared with non-doped composites.
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DOI:
10.1016/0956-716x(95)00093-b
发表时间:
1995-07
期刊:
Scripta Metallurgica Et Materialia
影响因子:
--
作者:
Yoshikazu Suzuki;T. Sekino;K. Niihara
通讯作者:
Yoshikazu Suzuki;T. Sekino;K. Niihara
DOI:
10.1016/0921-5093(92)90314-q
发表时间:
1992-06
影响因子:
6.4
作者:
R. Schwarz;S. Srinivasan;J. Petrovic;C. Maggiore
通讯作者:
R. Schwarz;S. Srinivasan;J. Petrovic;C. Maggiore
影响因子:
5.2
作者:
P. R. Taleghani;S. Bakhshi;M. Erfanmanesh;G. H. Borhani;R. Vafaei
通讯作者:
P. R. Taleghani;S. Bakhshi;M. Erfanmanesh;G. H. Borhani;R. Vafaei
影响因子:
6.2
作者:
C. Yeh;W. Chen
通讯作者:
C. Yeh;W. Chen
DOI:
10.1007/bf02881867
发表时间:
1988-08
期刊:
Bulletin of Alloy Phase Diagrams
影响因子:
--
作者:
K. E. Spear;P. Liao
通讯作者:
K. E. Spear;P. Liao