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应用科学学报 ›› 1996, Vol. 14 ›› Issue (2): 158-166.

• 论文 • 上一篇    下一篇

CaLa2S4的固体粒子冲蚀

高桦1, 孙琦清2, J E FIELD2   

  1. 1. 上海工程技术大学;
    2. 英国剑桥大学卡文迪许实验室
  • 收稿日期:1994-11-07 修回日期:1995-04-04 出版日期:1996-06-30 发布日期:1996-06-30
  • 作者简介:高桦:教授,上海工程技术大学能源与环境工程研究所,上海 200335

SOLID PARTICLE EROSION OF CaLa2S4

GAO HuA1, SUN QlQING2, J E FIELD2   

  1. 1. Shanghai University of Engineering Science;
    2. PCS, Cavendish Laboratory, Cambridge University, U K
  • Received:1994-11-07 Revised:1995-04-04 Online:1996-06-30 Published:1996-06-30

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摘要： 该文研究新型红外透射材料CaLa2S4在高速固体粒子冲蚀下的破坏规律.包括:冲蚀裂纹的形成和扩展,小碎片的形成和振荡,冲击速率(从22m·s-1到180m·s-1)对蚀坑发展和冲蚀率的影响.并且对CaLa2S4在冲蚀条件下的塑性变形及其临界冲击速率、以及水平裂纹表面的扩展条纹进行了分析讨论.

关键词: 固体粒子冲蚀, 冲击断裂, 红外透射材料

Abstract: Solid particle erosion of the CaLa2S4 infra-red transmitting material has been studied; it includes crack initiation and propagation, flake formation and oscillation as well as the effect of solid velocity (from 22 to 180m·s-1) on crater morphology and erosion rate. Theoretical analysis has been carried out upon (1) plasticity in the contact zone, and (2) the striation mark on the lateral crack surface. And by using a membrane free vibration model, the widths of striation mark have been estimated.

Key words: solid particle erosion, infra-red transmitting material, impact fracture