Abrasive Erosion Comparison for a Ceramics and a High Chrome Cast Iron Applied in a Slurry Pump
Slurry pumps are used to transport the liquid fluids with solid particles in the industries.The materials of flow passage in a slurry pump are subjected to severe damage due to abrasive erosion.This paper compares the abrasive erosion for an engineering ceramics i.e.hot pressed Si3N4 ceramics and a high chrome cast iron i.e.Cr26 by laboratory test and industrial operation.The results indicate that the erosion rate of Cr26 is much larger than that of hot pressed Si3N4 ceramics under the same test conditions.That indicates that the engineering ceramics is a promising alternation of the expensive material such as Cr26 in the application of slurry pumps.It is noted that the erosion pattern such as scale ripple has the similar features for both materials,even the hardness of hot pressed Si3N4 ceramics is much higher than Cr26.Further,the scale ripple is suspected to be originated from the relatively weak grain boundary and enhanced by cavitation.
Si3N4 ceramics High chrome cast iron Abrasive erosion Scale ripple
Xianwu Luo Hongyuan Xu Juan Liu Longhao Qi
State Key Laboratory of Hydroscience & Engineering,Tsinghua University,Beijing 100084,China China Institute of Water Resource and Hydropower Research,Beijing 100044,China Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
894-897
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）