Electric Field-assisted Fine Finishing of Brittle Materials Using Electrophoresis Phenomenon

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  • ぜい性材料の電気泳動援用研磨 (FFF)
  • ぜい性材料の電気泳動援用研磨(FFF)--帯電砥粒の泳動条件が研磨特性に及ぼす効果
  • ゼイ セイ ザイリョウ ノ デンキ エイドウ エンヨウ ケンマ FFF タイデントリュウ ノ エイドウ ジョウケン ガ ケンマ トクセイ ニ オヨボス コウカ
  • —Effect of Electrophoresis Conditions for Charged Grains on Electrophoresis-polishing—
  • —帯電砥粒の泳動条件が研磨特性に及ぼす効果—

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Abstract

Electrophoresis-polishing method, it is one of the methods of “Field-assisted Fine Finishing (FFF)”, has been developed recently, in which charged grains suspended in liquid move to an electorode under an applied potential. Present paper focuses on effect of electrophoresis current yielded by the movement of the charged grains in liquid under the applied potential. Effect of grain concentration of CeO2 and ZrO2 fine abrasives on the electrophoresis-polishing both of BK7 glass and silicon wafer is examined experimentally. It is found thatζ-potential of CeO2 and ZrO2 fine abrasives dispersed into liquid are measured by moving boundary method on simple setup using the electrophoresis phenomenon of the charged grains, on which the electrical double layer is conducted. The result of examinations presents controllability by the applied potential and independence for grain concentration. Polishing setup is able to give the polishing pressure to the work piece on the unwoven polisher made of polymer. Experimental results show that the stock removal increases with increasing the applied potential. Concerning the increase of stock removal in the conditions of high concentration of grain, influence of the electrophoresis current is discussed relating with the flow of polishing compound.

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