A Study on the Improvement of the Wear Resistance of P-bronze

인청동의 내마모성향상에 대한 연구

  • Song, Kun (Department of Metallurgical Engr., Korea University) ;
  • Kwun, Sook-In (Department of Metallurgical Engr., Korea University) ;
  • Cha, Young-Hyun (Kum Kang-Dengen Metal Co.Ltd. Institute of Materials Research and development)
  • 송건 (고려대학교 금속공학과) ;
  • 권숙인 (고려대학교 금속공학과) ;
  • 차영현 (금강전원(주) 부설 소재연구소)
  • Published : 1988.04.01


The wear resistance of P-bronze which is widely used as worm gear material was investigated. In order 1o study the effect of additional elements on the wear resistance of Pbronze, the applied load and sliding time were selected as variables, and SCM4, were used as against metal. The addition of Fe improve wear resistance, for it precipities hard Fe$_3$ P phase and the work hardening coefficients are lowered due to decreasing solubility of P. When Fe is added in conventional P-bronze, the alloy is rather sliding than forming wear debris by frictional force during wear test. Experimental results indicated that the wear mechanisms for P-bronze are mainly consisted of abrasive wear due to Beilby layer forming mechanism and adhesive wear due to thermally activated wear mechanism. Moreover, the weight loss is decreased in accordance with increasing load and time. However the rate of wear loss is decreased as the sliding time is increased.