2001, Volume 3, Issue 8
Strategic Study of CAE >> 2001, Volume 3, Issue 8
Failure Processes Micro-characteristic Studies of Two Materials to Resist Cavitation Erosion and to Resist Erosion and Abrasion
1.Kunming University of Science and Technology, Kunming 650051, China
2.Water Conservancy Science Research Institute of the Huanghe River, Zhengzhou 450000, China
Next Previous
Abstract
A typical cavitation erosion resisting sample,the weld deposited coationg of boronic stainless steel, and a typical erosion and abrasion resisting sample,the weld deposited coating of WC ceramic are micro-analyzed and studied by means of light microscope, scanning electron microscope(SEM) ,electon probe and X-rays diffraction. The obtained results indicate that the weld deposited coating of boronic stainless steel has better resistance to cavitation eroion, while weld deposited coating of WC ceramics is a better barrier to erosion and abrasion. Forthermore,the material failure from erosion and abrasion is resulted from the combining actions of the minus pressure because of bubble crumbling and the tangential componental force caused by the dashing of silt granular.
Keywords
cavitation erosion ; erosion and abrasion ; micro-characteristic
Figures
图1
图2
图3
图4
图5
图6
图7
References
[ 1 ] KarimiA .Cavitationerosionofmaterials[J].InterMa terialsRev, 1996, 41 (2) :154～162
[ 2 ] 王 飚.金属材料的抗磨蚀性判据研究[A].1996中国材料科学研讨会论文集 (IV) [C].化学工业出版社, 1997.485～489
[ 3 ] ChengBeli.焊接冶金学原理[M ].清华大学出版社, 1991.297～316
[ 4 ] 王 飚. (WC -M ) 硬面陶瓷复材及其在水轮机中的应用研究[A].1998中国材料科学研讨会论文集 (下卷) [C].化学工业出版社, 1999.864～868
京公网安备 11010502051620号
