Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Involving measuring – analyzing – or testing
Patent
1997-04-01
1999-03-23
Valentine, Donald R.
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Involving measuring, analyzing, or testing
205645, 205654, 205686, 204225, 204231, C25D 2112, C25D 1700, C25F 300, C25F 700
Patent
active
058854347
ABSTRACT:
A method for performing fine working of a material by electrochemical reaction comprises a two-step scanning operation in which a surface topography of the material is obtained during a first scan which is used to control the position of a probe during a second scan in which an electrochemical reaction is performed. During the first scan, an electrochemical cell is constructed with a four-electrode system, including the probe, a material to be worked, a reference electrode and a counter electrode. The potential of each of the probe and the material to be worked is set so that no electrochemical reaction occurs during the first scan. Data representative of the surface topography is stored and used to control the position of the probe during the second scan in which an electrochemical cell is constructed with a three-electrode system, including the probe, the material, and the reference electrode. The potential of the material with respect to the probe is set such that the electrochemical reaction occurs during the second scan, and the probe is maintained at a distance determined based on the stored topographical data.
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Ataka Tatsuaki
Sakuhara Toshihiko
Suda Masayuki
Seiko Instruments Inc.
Valentine Donald R.
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