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논문 기본 정보

자료유형
학술저널
저자정보
K. Y. Mohd Iqbal (Universiti Malaysia Sabah) D. Z. Segu (Yeungnam University) H. Pyung (Yeungnam University) J. H. Kim (Korea Institute of Industrial Technology (KITECH)) S. S. Kim (Universiti Malaysia Sabah)
저널정보
한국트라이볼로지학회 Tribology and Lubricants 윤활학회지 제31권 제6호
발행연도
2015.12
수록면
287 - 293 (7page)

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초록· 키워드

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Laser surface texturing (LST), a surface engineering modification, has been considered as one of the new processes used to improve tribological characteristics of materials by creating artificially patterned microstructure on the contact surface of mechanical components. In LST technology, the laser is optimized to obtain or manufacture the dimples with maximum precision. The micro-dimples reduce the coefficients of friction and also improve the wear resistance of materials. This study investigates the effect of dimple density is investigated. For this purpose, a ball-on-disc type tester is used with AISI 52100 bearing steel as the test material. Discs are textured with a 5% and 10% dimple density. Experimental work is performed with normal loads of 5 N, 10 N, and 15 N under a fixed speed of 150 rpm at room temperature. The effect of the textured surface is compared to that of the untextured one. Experimental results show that the textured surface yields lower friction coefficients compared to those of untextured surfaces. Specifically, the 10% dimple density textured surface shows better friction reduction behavior than the 5% dimple density textured sample, and has an 18% improvement in friction reduction compared with the untextured samples. Microscopic observation using a scanning electron microscope (SEM) shows that the major friction mechanisms of the AISI 52100 bearing steel are adhesion, plastic deformation, and ploughing.

목차

Abstract
1. Introduction
2. Experimental Procedure
3. Results and Discussion
4. Conclusions
References

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UCI(KEPA) : I410-ECN-0101-2016-551-002333845