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Abstract
Properties enhancement through surface modification has been established as a method to improve the dispersion quality of case hardening treatment. Improvement of dispersion thickness layers resulted in properties enhancement of metallic material. This study investigates the effect of shot blasting parameters which are single (SB) and double (DB) sand blasting on boronizing dispersion layer of 304 stainless steel. Boronizing treatment is conducted using paste boron at temperature of 900˚C for 6 hours holding time. The dispersion layer measurement and phase identification were evaluated through optical microscope and XRD analysis. Vickers hardness test and surface roughness analysis were also conducted .The result shows that noticeable enhancement of dispersion layer thickness was observed after conducting double sand blasting as compared to single sand blasting. Thicker dispersion layer leads to the increment of hardness value and also enhancement in surface roughness properties.
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