Analysis to Mullite Bonded Corundum Purging Plug

Abstract:

We chose a purging plug with good performance to analyze its insert plate. By X ray fluorescence analysis method, the main chemical composition is alumina and the small amount is silica. XRD analysis shows its phase compositions, main crystal phase is corundum, the secondary phase is mullite. SEM analysis is for the microstructure, grains are packed closely. They are sintered tabular corundums with smooth shape, which means there is liquid phase in sintering process to help mass transfer. As a conclusion, this product is designed from the point of material selection and structure control to improve its thermal shock resistance. Compacted microstructure combining with good thermal shock-resistance mineral phases improve the service life of purging plug.

• Periodical: Applied Mechanics and Materials (Volumes 423-426)
• Pages: 49-52
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.423-426.49
• Online since: September 2013
• Authors: Xue Hua Ren, Ping Zhao, Qi Hui Lai, Xuan Qin
• Keywords: Mullite, Sintered Tabular Corundum, Thermal Shock Resistance

References

[1] Huimin Liu, Jialin Sun, Jinxiang Wang: Refractory (in Chinese) Vol. 43 (2009), pp.199-202.

[2] Quanli Jia, Ran Wu, Xiaogai Sun: Refractory (in Chinese) Vol. 47 (2013), pp.58-60.

[3] Pingkun Xu: corundum refractory material (Metallurgical Industry Publications, China 1998).

[4] Yuanbing Li, Nan Li, Bing Peng, Weihu Wu and Tianqing Li: Refractory (in Chinese) Vol. 36 (2002), pp.95-96.

[5] Baoxin Zhang and Xiaojun Tong: Refractory (in Chinese) Vol. 34 (2000), pp.38-40.

[6] Ying Cheng, Liming Zhang, Zhaohong Ma and Hui Huang: Refractory (in Chinese) Vol. 42 (2008), pp.54-57.