Abstract
I WAS much interested in the letter of Mr. George Beilby in your issue of May 12. It may interest Mr. Beilby to know that I contributed a paper to the Institution of Civil Engineers on “The Effect of Stress on the Corrosion of Metals” (Proc. Inst. C.E., vol. cxviii., session 1893–4). On perusing this paper it will be seen that the results were somewhat analogous to the line of investigation Mr. Beilby is undertaking. The experiments were on an extensive scale, and were made on numerous samples of iron and steel. In each case a polished bar of the steel or other metal, of known chemical composition and physical properties, used was cut in two; one half was stressed, and the other remained in its normal state. Each pair of bars was immersed in sea water, as an electrolyte, forming the elements of a galvanic couple, with a delicate calibrated galvanometer in circuit, when a decidedly measurable E.M.F. was observed. It was invariably noticed that the alteration in the physical properties of the metals produced by the stress only in each stressed bar was sufficient to place that bar in the position of copper in a zinc copper cell, the normal unstressed bar answering to the zinc element in a galvanic couple.
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ANDREWS, T. Electromotive Force between Two Phases of the same Metal. Nature 70, 125 (1904). https://doi.org/10.1038/070125a0
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DOI: https://doi.org/10.1038/070125a0
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