Influence of Cooling Rate on Microstructure of Self-Reactive Spray Formed Ti(C,N)-TiB2 Composite Ceramic Preforms

Hong Wei Liu; Jian Jiang Wang; Xiao Feng Sun; Ji Qiu

doi:10.4028/www.scientific.net/AMR.631-632.348

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 631-632Influence of Cooling Rate on Microstructure of...

Influence of Cooling Rate on Microstructure of Self-Reactive Spray Formed Ti(C,N)-TiB₂ Composite Ceramic Preforms

Abstract:

With graphite, 45 steel and copper as substrates respectively, Ti(C,N)-TiB₂ composite ceramic preforms with micro/nanometric grains were prepared by self-reactive sprayed forming technology. The cooling rate of spray particles deposited on different substrates was calculated by finite element method. The influence of cooling rate on morphology of micro/nanometric grains of Ti(C,N)-TiB₂ composite ceramic preforms was studied by means of SEM, XRD and EDS. The results showed that the average cooling rates of particles deposited on the three kinds of substrates were 7.0×10⁷°C/s, 8.1×10⁷°C/s and 10.7×107°C/s respectively. The extremely quick cooling rate was the essential reason why the spray formed preforms were composed of micro/nanometric grains. The TiC_0.3N_0.7 grains in preforms deposited on three kinds of substrates all took on anomalous equiaxed grains. Quicker the cooling rates of the deposited particles were, smaller the grains were. The grain size of them was all less than 3μm. Whereas the influence of cooling rate on the morphology of the TiB₂ grains was great. When with graphite as substrate, TiB₂ took on rod-like grains with big length to diameter ratio. When with 45 steel as substrate, it took on near equiaxed grains. And when with copper as substrate, it took on lamina grains with thickness of about 100nm due to the extremely quick cooling rate and the extremely large degree of supercooling. That’s because with the change of the cooling rates, the remaining time of the liquid phases is different, so as to the growing time of the grains along the habit plane is also very different.

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Periodical:

Advanced Materials Research (Volumes 631-632)

Pages:

348-353

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.631-632.348

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Online since:

January 2013

Authors:

Hong Wei Liu, Jian Jiang Wang, Xiao Feng Sun, Ji Qiu

Keywords:

Composite Ceramic Preforms, Cooling Rate, Micro/Nanometric Grains, Self-Reactive Spray Forming, Ti(C,N)-TiB₂

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References

[1] Liu Hongwei, Zhang Long, Wang Jianjiang et al. Ordnance Material Science and Engineering, 2007, 30: 63.

Google Scholar

[2] H. W. Liu, L. Zhang, J. J. Wang et al. Key Engineering Materials[J], 2008, 368-372: 1126.

Google Scholar

[3] Liu Hongwei, Zhang Long, Wang Jianjiang et al. Chinese Journal of Materials Research, 2008, 22(2): 274.

Google Scholar

[4] J. J. Wang, H. W. Liu, W. B. Hu, et al. Key Engineering Materials[J], 2010, 434-435: 33.

Google Scholar

[5] Ma Qingfang, Fang Rongsheng. Practical Thermal and Physical Manual [M]. Beijing: Chinese Agriculture Mechnical Press, 1986: 230.

Google Scholar

[6] J.S. Zhang, H. Cui, X.J. Duan, et al. Materials Science and Engineering A[J], 2010, 276: 257.

Google Scholar

[7] Zhu Baohong, Xiong Baiqing, Zhang Yongan et al. Rare Metal [J]，2002, 26(2): 87.

Google Scholar

[8] Sun Jianfei, Shen Jun, Li Zhengyu. Powder Metallurgy Technology[J], 2000, 18(2): 92.

Google Scholar

[9] C. C. Zhu, X. H Zhang, X. D. He, et al. J Mater Sci Tech [J], 2005, 22(1): 78.

Google Scholar

[10] C. Mitterer, P.H. Mayrhofer, M. Beschliesser, et al. Surface and Coatings Technology[J], 1999, 120: 405.

Google Scholar

[11] Lu Daqing. Study on SHS Flame Spraying TiC-TiB2 Multi-phased Ceramic coatings [D]. Shijiazhuang: Ordnance Engineering College, 2004: 35.

Google Scholar

[12] Li Shibo, Wen Guangwu, Zhang Bosheng. J Mater Sci Tech [J], 2002, 10(1): 32.

Google Scholar

[13] Zhang Guojun, Wang Yimin, Fang Rui, et al. Chinese Journal of Silicate [J], 1998, 26(1): 27.

Google Scholar

[14] Wang Weimin. SHS Synthesis and Machining of TiB2 ceramics [D]. Wuhan: Wuhan University of Technology, 1998: 86.

Google Scholar

[15] Wang Jianjiang, Hu Wenbin, Liu Hongwei, et al. Key Engineering Materials[J], 2008, 368-372: 1686.

Google Scholar