Summary
International Workshop on Smart Info-Media Systems in Asia
2022
Session Number:RS2
Session:
Number:RS2-4
An Imaging of Fine Structure for Surface and Its Inside of Solid Material with Micro Slurry-jet Erosion Test
Shinji Fukuma, Yoshiro Iwai@Shin-ichiro Mori,
pp.113-118
Publication Date:2022/9/15
Online ISSN:2188-5079
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Summary:
We propose an imaging method of fine structure for the surface and its inside of solid material such as coated drill bits with TiN (Titanium Nitride), called i-MSE (innovative MSE). The fine structure is visualized with a local mechanical strength (the local erosion rate) which is obtained from set of erosion depth profiles measured with Micro Slurry-jet Erosion test (MSE). The local erosion rate at any sampling point is estimated from the depth profile using a sliding window regression and for other 2-dimensional points it is interpolated with the mean value coordinate technique. The interpolated rate is converted to a 2D image, i-MSE map with a color map. The i-MSE map can distinguish layers if the testing material surface comprises of coats which have different resistance to erosion (erosive wear), while microscopic image such as SEM (Scanning Electron Microscope) and TEM (Transmission Electron Microscope) just provides appearance information, not physical characteristics. Thus i-MSE can be an effective tool to evaluate mechanical characteristics for the surface and the inside of solid material.