Design and Construction of an Electrochemical Chamber and a High-Voltage AC Generator for Electrochemical Etching in CR-39 Polycarbonates Sheets


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Abstract

An original design for an electrochemical chamber and the construction of a high-voltage AC generator for electrochemical etching (ECE) of nuclear tracks in CR-39 polycarbonates sheets are presented. The electrochemical chamber was designed and manufactured in an engineering plastic in a vertical machining center. The high-voltage AC generator was built by using different electronic circuits: a signal oscillator, a preamplifier, a power amplifier, two power supplies and a voltage converter transformer. The experimental tests showed that the design of the electrochemical chamber allowed that ECE be developed efficiently, achieving a dielectric breakdown in the polycarbonate, and the generator supplied the electric current in a stable manner and with an excellent performance throughout the ECE. The conditions of chemical etching and electrochemical etching, as well as the electrical treeing generated in the CR-39 are also presented.

About the authors

A. Lima Flores

Facultad de Ciencias Físico Matemáticas, Benemérita Universidad Autónoma de Puebla,
Avenida San Claudio y 18 Sur, Colonia San Manuel, Ciudad Universitaria

Author for correspondence.
Email: jaflores8630@gmail.com
Mexico, Puebla, C.P.72570

R. Palomino-Merino

Facultad de Ciencias Físico Matemáticas, Benemérita Universidad Autónoma de Puebla,
Avenida San Claudio y 18 Sur, Colonia San Manuel, Ciudad Universitaria

Email: vmcastano@unam.mx
Mexico, Puebla, C.P.72570

V. M. Castaño

Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México,
Boulevard Juriquilla 3001, Santiago de Querétaro

Author for correspondence.
Email: vmcastano@unam.mx
Mexico, Querétaro, C.P.76230

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