Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)

Korean Tribology Society (한국트라이볼로지학회)
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Synthesis of WS$_2$ Solid Lubricant and Its Application to the Ball Bearing

WS$_2$ 고체윤활제의 합성 및 구름베어링 적용

  • 신동우 (경상대학교 재료공학부 무기복합재료연구실, 첨단소재연구소) ;
  • 윤대현 (경상대학교 재료공학부 무기복합재료연구실, 첨단소재연구소) ;
  • 최인혁 (경상대학교 재료공학부 무기복합재료연구실, 첨단소재연구소) ;
  • 김경도 (경상대학교 재료공학부 무기복합재료연구실, 첨단소재연구소)
  • Published : 1998.04.01
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Abstract

The processing conditions for the synthesis of platelet WS$_2$ lubricant powder through the solid-gas reaction were optimized. The tungsten and sulfur powders were sealed in a vacuum of 10$^{-6}$ torr, prior to heat-treating at 850$\circ$C for 8 days. The react~on product showed the well-developed platelet WS$_2$ powder with an average size of 3.8 $\mu$m. The synthesized WS$_2$ powder was coated on the commercial deep grooved ball bearing (No. 6203) to examine the effects of WS$_2$ coating layer on the noise and endurance of the ball bearing. The level of noise obtained from WS$_2$ coated-ball bearing was higher (56 dB) than the value occurred in the case of greece (37 dB). The life-time of the ball-bearing assembled after coating WS$_2$ powder increased 50 times compared to the non-coated bali-bearing.

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