Effects of Ti(C,N) Nanoparticles on Mechanical Properties of the Si3N4 Ceramics

Qian Li; Fu Sheng Zhu; Zhi Meng Xiu; Xu Dong Sun

doi:10.4028/www.scientific.net/AMM.80-81.119

Paper Titles

Cementite Spheroidization of Drawn Wire during Isothermal Treatment
p.100

Influence on the Proprieties of PET Coated Diamond-Like Carbon Film for Different Preparing Condition by PECVD
p.104

A Replaceable Lead-Free Solder for Sn-37Pb
p.108

Corrosion Damage Research of Shot Peening Aluminum Alloy
p.113

Effects of Ti(C,N) Nanoparticles on Mechanical Properties of the Si₃N₄Ceramics
p.119

Influence of Structure Parameters on Compressive Behavior of Aluminum Foam
p.123

Study on the Properties of Spherical Pore Porous Metal Prepared by Plastic Working
p.128

Microstructure and Grain Abrasion Properties of (Ti,W)C-Ni Cermet Cladding Layers Prepared by Tungsten Inert Gas Cladding
p.133

Theory and Experiment Study of Normal Penetration of Slender Nose Projectile into Steel Target
p.137

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 80-81Effects of Ti(C,N) Nanoparticles on Mechanical...

Effects of Ti(C,N) Nanoparticles on Mechanical Properties of the Si₃N₄Ceramics

Abstract:

Si₃N₄-Ti(C,N) nanocomposites fabricated by vacuum hot pressing with Al₂O₃and Y₂O₃ as additives were investigated. The results showed that the α-Si₃N₄ phase converted completely into whisker-shaped β-Si₃N₄ grains after vacuum sintering at 1700°C. Suitable addition and well dispersion of the Ti(C,N) particles can restrained the lateral growth of the β-Si₃N₄ grains, increasing aspect ratio of the β-Si₃N₄ grains and improving bending strength of the composites. Fracture toughness of the composites is higher than that of the β-Si₃N₄ ceramics, and the main toughening mechanism is crack bridging due to the higher aspect ratio of the β-Si₃N₄ grains.With the addition of 1vol% of Ti(C,N), the composite has a relative density of 99.31%, Vicker’s hardness of 15.9 GPa, bending strength of 993 MPa, and fracture toughness of 9.9 MPa·m^1/2.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 80-81)

Pages:

119-122

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.80-81.119

Citation:

Cite this paper

Online since:

July 2011

Authors:

Qian Li, Fu Sheng Zhu, Zhi Meng Xiu, Xu Dong Sun

Keywords:

Si₃N₄, Ceramic Matrix Composite, Hot-Pressing, Mechanical Property, Ti(C,N)

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] T. Ekstrorn, K. Mackenzie, M. Ryan, Phases occurring in the Si3N4-YN system, Journal of Materials Chemistry. 7(1997)505-509.

Google Scholar

[2] G. Woetting, B. Caspers, E. Gugel, Hightemperature properties of SiC-Si3N4 particle composites. Journal of Engineering for Gas Turbines and Power, 8(2000)122-124.

DOI: 10.1115/1.483171

Google Scholar

[3] F.Q. Yan, F. Chen, Q. Shen, Spark plasma sintering of α–Si3N4 ceramics with MgO–Al2O3 as sintering additives, Key Engineering Materials. 176(2007)351-356.

DOI: 10.4028/www.scientific.net/kem.351.176

Google Scholar

[4] G. A. Swift, E. Ustundag, B. Clausen, High-temperature elastic properties of in situ-reinforced Si3N4, Applied Physics Letters. 82(2003)1039-1042.

DOI: 10.1063/1.1554478

Google Scholar

[5] Z. J. Lu, X. AI, J. Zhao, Mechanical properties and microstructure of Si3N4-TiC nanocomposites, J. Mater. Sci. Technol. 21(2005)899-902.

Google Scholar

[6] R. M. Yin, J. L. Fan, X. Liu, Effect of Mg-Y oxides on the microstructure and properties of Fe–Mo/Si3N4 cermet, Chinese Journal of Materials Research. 24(2010)232-238.

Google Scholar

[7] J. S. Ha, C. S. Kim, D. S. Cheong, Processing and properties of Al2O3/ Si3N4 nanocomposite coated alumina by slurry dipcoating, Journal of Materials Science Letters. 17(1998)747-749.

Google Scholar

[8] X. W. Zhu, Y. Zhou, H. R. Kiyoshi, Effects of processing method and additive composition on microstructure and thermal conductivity of Si3N4 ceramics, Journal of the European Ceramic Society. 26(2006)711-718.

DOI: 10.1016/j.jeurceramsoc.2005.07.027

Google Scholar

[9] Xiong J, Zhang Y K, Shen B L, et al. The Preparing and performance of superfine TiCN cermet. Powder Metall Techol 23(2004)164-167.

Google Scholar

[10] Ahn S Y, Kang S. Effect of WC particle size on microstructure and rim composition in the Ti(C0. 7N0. 3)-WC-Ni system, Scripta Materialia. 55(2006)1015–1018.

DOI: 10.1016/j.scriptamat.2006.08.008

Google Scholar