Formation mechanism of grinding wheel oxide layer in the ultrasonic-assisted ELID grinding of silicon carbide ceramics.

11(a) , post-model correction, both theoretical and measured oxide layer thickness values demonstrate an increasing trend with prolonged U-ELID pre-sharpening duration, ultimately reaching a plateau.

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The surface roughness of the workpiece generally showed a decreasing trend with the increase of the U-ELID pre-sharpening time.

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Within the time frame of 10–120 s, the loop current exhibits an overall trend of fluctuation and decline, with the decreasing rate decelerating over time.

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