研究目的
Investigating the possibilities of dry and lubricated friction modification introduced by different laser surface texturing methods on 100Cr6 steel.
研究成果
The research demonstrated that LBIA and LSFL generate surface structures with similar periodicity but different tribological behaviors. LSFL-covered surfaces showed potential for COF reduction in lubricated conditions, while LBIA structures were beneficial for dry friction reduction. The study provides insights into the application of laser surface texturing for friction modification.
研究不足
The study is limited to 100Cr6 steel and tungsten carbide balls under specific load forces and conditions. The effects of other materials, lubricants, and environmental conditions were not explored.
1：Experimental Design and Method Selection:
The study compares Laser-Induced Periodic Surface Structures (LIPSS) and Laser Beam Interference Ablation (LBIA) on 100Cr6 steel in a linear reciprocating ball-on-disc configuration.
2：Sample Selection and Data Sources:
100Cr6 steel and tungsten carbide balls were used with load forces between 50 mN and 1000 mN.
3：List of Experimental Equipment and Materials:
Micro-machining station (MM200 USP, Optec), ultrashort pulsed laser (Pharos 10-600-PP, Light Conversion), galvo scanner (RTA AR800, Newson), telecentric lens (f = 100 mm), atomic force microscopy (XE-150, Park Systems), scanning electron microscopy (EVO MA10, Carl Zeiss Microscopy GmbH), universal mechanical tester (UMT TriboLab, Bruker Corporation), laser scanning microscopy (VK-X200, KEYENCE DEUTSCHLAND GmbH).
4：Experimental Procedures and Operational Workflow:
The study involved laser surface texturing, surface analysis using AFM and SEM, and tribological analysis in dry and lubricated conditions.
5：Data Analysis Methods:
The coefficient of friction (COF) was calculated by the average of 50 s of steady measurement of the applied force and the induced lateral force.
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Scanning electron microscopy
EVO MA10
Carl Zeiss Microscopy GmbH
Used to analyze the generated surface structures.
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Universal mechanical tester
UMT TriboLab
Bruker Corporation
Used to perform the tribological evaluation.
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Ultrashort pulsed laser
Pharos 10-600-PP
Light Conversion
Used for the generation of micro- and nano-structures.
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Micro-machining station
MM200 USP
Optec
Used for laser surface processing.
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Galvo scanner
RTA AR800
Newson
Used in combination with a telecentric lens to focus the beam onto the sample.
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Telecentric lens
f = 100 mm
Used to focus the beam onto the sample.
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Atomic force microscopy
XE-150
Park Systems
Used to obtain the 3D surface topology of the different structures.
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Laser scanning microscopy
VK-X200
KEYENCE DEUTSCHLAND GmbH
Used to capture the resulting wear on the substrate.
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