Cavitation-Erosion Characteristics between Polymer Based Composites and Metals under the Various Condition of Fluid Systems

유체 환경하에서의 고분자 기지 복합재료와 금속재의 캐비테이션 침식 특성

  • 김윤해 (한국해양대학교 기계소재공학부) ;
  • 손영준 (한국해양대학교 대학원 재료공학과) ;
  • 엄수현 (한국해양대학교 대학원 재료공학과) ;
  • 이정주 (상신브레이크)
  • Published : 2003.03.01


This study is mainly concerned with phenomenon of cavitation-erosion on the several materials and corrosive liquids which were applied with vibrator(suggested by ASTM G 32, 20KHz, 50$mu extrm{m}$). The maximum erosion rate by cavitation erosion in both of distilled water and sea water appeared to be proportioned to their hardness and tensile strength. Cavitation weight loss and rate of cast iron in sea water condition were greater(approximately 3 times) than that in distilled water condition, however in case of stainless steel and brass the cavitation weight loss of composite materials were not so different in both of their conditions. Cavitation weight loss of composite materials were shown as below on this test, Duratough DL : Weight loss in sea-water condition were greater (approximately 2.3 times) than it's distilled water condition. The main tendency of cavitation erosion for metals appeared that small damaged holes causing by cavitation erosion was observed with radial pattern. On the other hand, the tendency for composites appeared that small damaged holes were observed randomly.


Cavitation-Erosion;MDPR;Supersonic Vibrator;Fluid System;Composite Materials;Cavitation;Volume Loss


  1. Jun-ki Kim. Sarn-yoel Ahn. Young-deog Kim. Young-kun Oh.. Seon-jin Kim.. 1998 'Cavitation Erosion Behavior of Fe and Ni Base Hardfacing Alloys for Replacing Co-Base Stellite.' J. Kor. Inst. Met. &Mater., pp. 1391-1395
  2. Hammitt. F. G. et al.. October 1970 'Round Robin Test with Vibratory Cavitation and Liquid Impact Facility of 6061-T651I Aluminum alloy. 316 Stainless Steel and Commercially Pure Nickel.' ASTM GT10 No. 10. pp. 16-36
  3. Annual Book of ASTM Standards G-32. ASTM (1992). 115
  4. Denny A. Jones. 1991 ' Principles and Prevention of Corrosion.' Macmillan Publishing Company. p. 342
  5. ASTM. 'Standard Method of Vibratory Cavitation Erosion Test.' p. 1
  6. Rebinson. L. E.. Holmes. B. A.. and Leith. W. C.. 1958. 'Progress Report on Standardization of the Vibratory Cavitation Test.' Transaction, ASME. Am. Soc. Mechanical Engrs. Vol. 80. pp. 103-107
  7. Masanobu Matsumura and Yoshinori Oka. 1982 'Influence of Erosion on Corrosion. Corrosion Engineering.' Vol. 31. No.2. pp.67-68.
  8. Kenneth R. Tretheway and John Chamberlain. 1988 'Corrosion.' Longman Scientic & Technical. p. 153
  9. Jung Do Park, 1998 'Improvement of Residual Stress of SUS316 by Using Cavitating Zet,' Transactions of the KSME, A, pp. 1956-1963
  10. Talks, M. G. and Moreton, G., Proc. ASME Symp. Cavitation Erosion Fluid System, 139, 1981
  11. Myeong-Ho Lee, Jong-Won Lee, 1992, 'Analysis of Flow Characteristics of Supercavitating Cascade,' Transactions of the KSME, A, pp. 803-810
  12. Gaines, N., 1974, 'A Magnetstriction Oscillator Producing Intense Audible Sound and Some Effects Obtatined,' Physics, Vol. 3, No.5, p. 209-229
  13. Hobbs, H. M., 1974 'Vibratory Cavitation Erosion Testing at NEL,' Proc. Conf. on Cavitation, Fluid mach. Group, Institution of Mechanical Engineers, Edinburgh, pp. 269-274