Effects of Surface Pretreatment to the Properties of Aluminum Oxide (Al2O3)Cutting Tool Coated Amorphous Graphite
Hydrofluoric Acid(HF)and sand blasting have been incorporated together with chemical surface pretreatment(HF)for the surface pretreatment of the Al2O3 cutting tool.Amorphous graphite was deposited on the substrates by using PVD technique. Morphological observation by Scanning Electron Microscope(SEM),surface roughness and topography of the substrate by using Atomic Force Microscopy(AFM) was done in order to investigate the effect of surface pretreatment on the substrates.Critical load required in scratching the substrates surface after coating by different surface pretreatment was evaluated by microscratch testing.As-received micrograph has a continuous 45° direction based on horizontal line when the substrate was put in the chamber at the time the image was taken.Substrate with surface pretreatment shows nonuniform surface with peak and valley image.Coated surface micrograph shows amorphous graphite with cube in shape.Surface roughness and critical load for microscratch of sample was found increased with surface pretreatment both chemically and mechanically.
surface pretreatment coating aluminum oxide morphological roughness microscratch
J.Ramli D.N.Awang Shri N.A.Alang N.I.Yusof M.M.Mahat
Faculty of Mechanical Engineering,Universiti Malaysia Pahang,26600,Pekan,Pahang Darul Makmur,Malaysi Faculty of Applied Sciences,Universiti Teknologi MARA,40450,Shah Alam,Selangor Darul Ehsan,Malaysia
国际会议
2012 2nd International Conference on Advanced Material Research(2012 第二届先进材料研究国际会议 ICAMR2012)
成都
英文
369-374
2012-01-07（万方平台首次上网日期，不代表论文的发表时间）