A SiC/(W,Ti)C ceramic nozzle with gradient structures was produced by hot pressing. The purpose is to reduce the tensile stress at the entry region of the nozzle in abrasive air-jet. The sand erosion performance of this kind gradient ceramic nozzle caused by abrasive particle impact was investigated by abrasive air-jets in comparison with the common one. Results showed that the gradient ceramic nozzles exhibited an apparent increase in erosion wear resistance over the common ceramic nozzles. The mechanism responsible was explained as the formation of compressive residual stresses in nozzle entry region in fabricating process of the gradient ceramic nozzles, which may partially counteract the tensile stresses resulting from external loadings. It is indicated that gradient structures in ceramic nozzles is an effective way to improve the erosion wear resistance of common ceramic nozzles.
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ASME 2006 International Manufacturing Science and Engineering Conference
October 8–11, 2006
Ypsilanti, Michigan, USA
Conference Sponsors:
- Manufacturing Engineering Division
ISBN:
0-7918-4762-4
PROCEEDINGS PAPER
Sand Erosion Performance of Gradient Ceramic Nozzles by Abrasive Air-Jets
Jianxin Deng
Jianxin Deng
Shandong University, Jinan, China
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Jianxin Deng
Shandong University, Jinan, China
Paper No:
MSEC2006-21057, pp. 455-459; 5 pages
Published Online:
October 2, 2008
Citation
Deng, J. "Sand Erosion Performance of Gradient Ceramic Nozzles by Abrasive Air-Jets." Proceedings of the ASME 2006 International Manufacturing Science and Engineering Conference. Manufacturing Science and Engineering, Parts A and B. Ypsilanti, Michigan, USA. October 8–11, 2006. pp. 455-459. ASME. https://doi.org/10.1115/MSEC2006-21057
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