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AISI 316L is used in biomedical engineering as bone implant materials. The mechanical properties and corrosion resistance of this material can be improved by shot peening. The aim of this research is to investigate the effect of shot peening on surface roughness, hardness, wettability, and pitting corrosion resistance of AISI 316L in 0,9 % NaCl solution. The shot-peening was performed on AISI 316L surfaces with duration of 0, 2, 4, 10, 20, 30 minutes using steel balls with a diameter of 0,6 mm and hardness of 40 - 50 HRC. The results show that shot peening increase roughness after 2 minutes then decrease the roughness with increasing time. The longer duration of shot peening will increase the pitting corrosion resistance.

A thin layer was formed on the surface of the AISI 316L substrate by the process of nitrogen ion implantation at a vacuum pressure of 10-6 torr, a current of 50 mA for 90 minutes with the implantation energy of 20, 40 and 60 keV. The purpose of this study was to investigate the effect of nitrogen ion implantation on corrosion fatigue resistance in Simulated Body Fluid solution as a corrosion medium. The results show that the nitrogen ion implantation could increase corrosion resistance by reducing the corrosion rate and increasing the number of fatigue cycles.

AISI 316L is one kind of implant materials due to its excellent mechanical properties and corrosion resistance. However, some of their mechanical and surface properties must be improved to a higher level of cobalt-based alloys and titanium properties. Shot peening is a surface treatment that improves properties on material surface. In this research, the effects of shot peening duration (0, 2, 4, 10, 20 and 30 min) on surface hardness, roughness, wettability, and corrosion in 0,9 % sodium chloride were investigated and discussed. According to the experimental results, it was found that shot peening increases both surface roughness and surface hardness compared to untreated sample. Furthermore, shot peening can reduce contact angle and corrosion rate after 2 minutes.

The surface of AISI 316L was treated by shot peening at different shot durations. Shot peening variables in this work are shot durations for 0, 4, 10 and 20 minutes, with compressor pressure at 8 kgf/mm2, steel balls with a diameter of 0,6 mm and shot gun nozzle diameter of 5 mm. The purpose of this research is to investigate the shot peening effect duration on surface roughness, hardness, and fatigue-corrosion characteristic of AISI 316L in 0,9 % NaCl solution. The results show that the duration of shot peening can affect the improvement on surface roughness, hardness, wettability and fatigue-corrosion life of AISI 316L.

AISI 316L is used in biomedical engineering as bone implant materials. The mechanical properties and corrosion resistance of this material can be improved by shot peening. The aim of this research is to investigate the effect of shot peening on surface roughness, hardness, wettability, and pitting corrosion resistance of AISI 316L in 0,9 % NaCl solution. The shot-peening was performed on AISI 316L surfaces with duration of 0, 2, 4, 10, 20, 30 minutes using steel balls with a diameter of 0,6 mm and hardness of 40 - 50 HRC. The results show that shot peening increase roughness after 2 minutes then decrease the roughness with increasing time. The longer duration of shot peening will increase the pitting corrosion resistance. [ABSTRACT FROM AUTHOR]

A thin layer was formed on the surface of the AISI 316L substrate by the process of nitrogen ion implantation at a vacuum pressure of 10-6 torr, a current of 50 mA for 90 minutes with the implantation energy of 20, 40 and 60 keV. The purpose of this study was to investigate the effect of nitrogen ion implantation on corrosion fatigue resistance in Simulated Body Fluid solution as a corrosion medium. The results show that the nitrogen ion implantation could increase corrosion resistance by reducing the corrosion rate and increasing the number of fatigue cycles. [ABSTRACT FROM AUTHOR]

AISI 316L is one kind of implant materials due to its excellent mechanical properties and corrosion resistance. However, some of their mechanical and surface properties must be improved to a higher level of cobalt-based alloys and titanium properties. Shot peening is a surface treatment that improves properties on material surface. In this research, the effects of shot peening duration (0, 2, 4, 10, 20 and 30 min) on surface hardness, roughness, wettability, and corrosion in 0,9 % sodium chloride were investigated and discussed. According to the experimental results, it was found that shot peening increases both surface roughness and surface hardness compared to untreated sample. Furthermore, shot peening can reduce contact angle and corrosion rate after 2 minutes. [ABSTRACT FROM AUTHOR]

The surface of AISI 316L was treated by shot peening at different shot durations. Shot peening variables in this work are shot durations for 0, 4, 10 and 20 minutes, with compressor pressure at 8 kgf/mm², steel balls with a diameter of 0,6 mm and shot gun nozzle diameter of 5 mm. The purpose of this research is to investigate the shot peening effect duration on surface roughness, hardness, and fatigue-corrosion characteristic of AISI 316L in 0,9 % NaCl solution. The results show that the duration of shot peening can affect the improvement on surface roughness, hardness, wettability and fatigue-corrosion life of AISI 316L. [ABSTRACT FROM AUTHOR]