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Quantified Hull Cell Technique

IP.com Disclosure Number: IPCOM000061931D
Original Publication Date: 1986-Aug-01
Included in the Prior Art Database: 2005-Mar-09

Publishing Venue

IBM

Related People

Authors:
Conrow, KM Galasco, RT Schaffer, RR Varsik, JE [+details]

Abstract

Hull cells are used extensively in the electroplating industry for the analysis and control of bath chemistry. Hull cell analysis is performed by placing a sample of the test solution in a trapezoidal cell and electroplating a test panel for a short time. The variable spacing between the cathode and anode results in a wide range of current densities on the electroplated part. The analysis is commonly performed by the observation of the appearance of the plated surface in different current density ranges. Subjective observations are made on appearance (brightness) density range resulting in inconsistent and current density range resulting in inconsistent and inexact measurements. A quantitatively measured reflected surface light procedure that eliminates this subjectivity is obtained in the following.