Tribology and Lubricants

  • 제34권6호
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  • Pages.235-240
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  • 2018
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  • 2713-8011(pISSN)
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  • 2713-802X(eISSN)
한국트라이볼로지학회 (Korean Tribology Society)
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인산을 이용한 법랑 코팅의 초윤활성 및 초기 시간에 대한 연구

Study on the Superlubricity and Running-in Period of Vitreous Enamel Coating using Phosphoric Acid

  • 한도렬 (연세대학교 대학원 기계공학과, 무한내마모연구단) ;
  • 김태형 (연세대학교 대학원 기계공학과, 무한내마모연구단) ;
  • 김대은 (연세대학교 대학원 기계공학과, 무한내마모연구단)
  • Han, Do-Lyeol (Center for Nano-Wear, Graduate School, Dept. of Mechanical Engineering, Yonsei University) ;
  • Kim, Tae-Hyung (Center for Nano-Wear, Graduate School, Dept. of Mechanical Engineering, Yonsei University) ;
  • Kim, Dae-Eun (Center for Nano-Wear, Graduate School, Dept. of Mechanical Engineering, Yonsei University)
  • 투고 : 2018.09.15
  • 심사 : 2018.11.21
  • 발행 : 2018.12.31
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초록

Superlubricity refers to the lubrication phenomenon that occurs when the friction coefficient is lower than 0.01. In recent years, this phenomenon has received a significant amount of attention because it can greatly contribute to the reduction of economic and environmental losses caused by friction and wear. In the case of acid lubricants, only ceramic materials can be used for superlubricity, and it takes a long running-in period to enter the superlubricity regime. In this work, we investigated the superlubricity effect of vitreous enamel coating on SUS304. We also examined the running-in period of vitreous enamel coating under phosphoric acid lubricant condition with respect to surface treatments. Drying and polishing methods were used to treat the vitreous enamel coating on the specimen. The friction experimental results revealed that superlubricity could be achieved with vitreous enamel coating. It was also found that the drying and polishing methods can significantly reduce the running-in period and improve the wear properties of vitreous enamel coating. In particular, the polishing method shortened the running-in period by approximately 99% and reduced the wear rate by approximately 99%, compared to nontreated vitreous enamel coating.

키워드

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Fig. 1. Manufacturing process of vitreous enamel coating.

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Fig. 1. Manufacturing process of vitreous enamel coating.

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Fig. 2. Process of dry method.

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Fig. 2. Process of dry method.

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Fig. 3. Process of polishing method.

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Fig. 3. Process of polishing method.

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Fig. 4. Ball-on-disc type tribotester.

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Fig. 4. Ball-on-disc type tribotester.

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Fig. 5. Superlubricity of vitreous enamel coating.

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Fig. 5. Superlubricity of vitreous enamel coating.

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Fig. 6. Running-in period of dry and polishing method.

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Fig. 6. Running-in period of dry and polishing method.

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Fig. 7. Wear rate of vitreous enamel coating.

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Fig. 7. Wear rate of vitreous enamel coating.

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Fig. 8. Wear track of vitreous enamel coating.

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Fig. 8. Wear track of vitreous enamel coating.

Table 1. Friction experiment condition

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Table 1. Friction experiment condition

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참고문헌

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