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Measurement of Mass Transfer Effects in Sulfate Electrogalvanizing Electrolyte.

Authors
Chen-SF; Cuzmar-JS; O'Keefe-TJ; Et Al
Source
Gen Motors Res Publ Gmr-5840 Gen Motors Res Lab Warren Mi 1987 May; :20 pages
Link
NIOSHTIC No.
10005793
Abstract
This paper describes research into the mass transport properties in a sulfate electrogalvanizing system using a potentiodynamic method and ag as the tracer ion. The limiting current density, mass transfer coefficient, and diffusion layer thickness of zinc were calculated from the measured limiting current of the tracer. The effects of temperature, zinc, concentration, and agitation on the mass transfer rate were evaluated. The effects of hydrodynamic and electrolytic conditions on the structure and properties of the zinc deposits were investigated. These studies showed the structure to be strongly influenced by both types of conditions. Corrosion properties were not significantly influenced by hydrodynamic conditions within the range studied. Sheet drawing properties, more dependent on crystal structure, were influenced by solution flow.
Publication Date
19870501
Document Type
OP;
Fiscal Year
1987
NTIS Accession No.
NTIS Price
Identifying No.
OP 101-87
NIOSH Division
WO;
Source Name
Gen. Motors Res. Publ. Gmr-5840, Gen. Motors Res. Lab., Warren, MI, May 4, 1987, 20 PP.
State
MI;
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