[B-4-6] Effects of ultrasonic vibration on slurryless electrochemical mechanical polishing of 4H-SiC (0001) surface 〇Xiaozhe Yang1, Xu Yang1, Kentaro Kawai1, Kenta Arima1, Kazuya Yamamura1 (1.Osaka University) Keywords:Polishing、slurryless、ultrasonic-assisted electrochemical mechanical polishing、ultrasonic vibration.