首页> 外文会议>International Thermal Spray Conference and Exposition >Experimental Analysis of Impact Behavior of Ultra-High Molecular Weight Polyethylene-Nano Ceramics Composite Particles by Isolated Particle Deposition Method Using Downstream Injection Cold Spray Technique
【24h】

Experimental Analysis of Impact Behavior of Ultra-High Molecular Weight Polyethylene-Nano Ceramics Composite Particles by Isolated Particle Deposition Method Using Downstream Injection Cold Spray Technique

机译:下游注射冷喷涂技术分离颗粒沉积法对超高分子量聚乙烯 - 纳米陶瓷复合颗粒的冲击性能的实验分析

获取原文

摘要

Recent advances has made possible to obtain Ultra High Molecular Weight Polyethylene (UHMWPE) coatings by cold spray technique with nano-ceramic additives with the feedstock. However, the exact role of nano particles is largely not understood. In this work, isolated depositions of UHMWPE particles with 0%, 2%, 4%, 10% of fumed nano alumina (FNA) on Al surface were performed at different gas/particle temperatures. Particle velocities and particle temperatures were controlled by varying the carrier gas pressure and temperature. The impact behavior of UHMWPE was analyzed using SEM, FIB and high-speed camera. Increase in gas temperature and percentage of FNA showed a significant variation in the deposition volume. FIB analysis showed that successful depositions were influenced by degree of deformation of particle. Further, addition of FNA helped in deposition of particles that have required a lesser degree of deformation. Finally, high speed camera showed that particles are moving at an incidence velocity of 180-200m/s and rebound velocity of 40-50m/s. This suggests that particles lose a significant amount of their kinetic energy during the impact.
机译:最近的进展使得通过用纳米陶瓷添加剂与原料通过冷喷雾技术获得超高分子量聚乙烯(UHMWPE)涂层。然而,纳米颗粒的确切作用很大程度上不明白。在该作品中,在不同的气体/颗粒温度下,在Al表面上分离出0%,2%,4%,10%的烟雾纳米氧化铝(FNA)的uhmWPE颗粒。通过改变载气压力和温度来控制颗粒速度和颗粒温度。使用SEM,FIB和高速相机分析了UHMWPE的影响行为。气体温度的增加和FNA的百分比显示沉积体积的显着变化。 FIB分析表明,成功的沉积受到颗粒变形程度的影响。此外,添加FNA有助于沉积需要较小变形程度的颗粒。最后,高速相机显示颗粒在180-200m / s的发射速度下移动,并反弹速度为40-50m / s。这表明粒子在撞击期间损失了其动能的大量动能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号