Impact attrition of particulate solids. Part 2: Experimental work
Impact attrition of particulate solids. Part 2: Experimental work
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DOI：
10.1016/s0009-2509(02)00241-5
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发表时间：
2002-09
影响因子：
4.7
通讯作者：
Z. Zhang;M. Ghadiri
中科院分区：
文献类型：
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作者：
Z. Zhang;M. Ghadiri
单颗粒冲击试验已经进行了评估的磨损，通过碎裂的离子单晶的MgO，NaCl和KCl，用作模型材料具有半脆性破坏模式。结果验证了第1部分中提出的理论预测。无量纲磨损倾向参数η=ρ v ~ 21 H/K ~ 2c可解释每次冲击的材料损失对材料性能、冲击速度和颗粒尺寸的依赖性。利用扫描电子显微镜对冲击损伤的观察进一步证实了冲击磨损的“碎裂”机制。此外，还讨论了靶材硬度对磨损率的影响。
Single particle impact testing has been carried out to evaluate the attrition by chipping of ionic single crystals of MgO, NaCl and KCl, used as model materials having a semi-brittle failure mode. The results have verified the theoretical predictions presented in Part 1. The dimensionless attrition propensity parameter, η=ρv2lH/K2c, is shown to account for the dependence of the material loss per impact on the material properties, impact velocity and particle size. The ‘chipping’ mechanism of impact attrition is further confirmed by the observations of the impact damage by the use of scanning electron microscopy. In addition, the influence of rigidity of target materials on attrition rate is also addressed.