Abstract
THE local hardening of sparked metal is described by Welsh1 as relying upon transfer from the electrode and/or contamination by the surrounding medium. When discussing these hardening and etching effects in ferrous metals it was mentioned2 that Rawdon3 obtained them even when electrolytic iron was self-sparked in vacuo or in argon. In these cases there would be no transfer, and the only contamination might be from any hydrogen in the electrolytic iron.
Similar content being viewed by others
Article PDF
References
Welsh, N. C., Nature, 181, 1005 (1958).
O'Neill, H., T. Inst. Welding, 9, No. 1, 3 (1946).
Rawdon, H. S., Trans. Amer. Inst. Min. Met. Eng., 70, 37 (1924); and private discussion (1930).
Sears, G. W., and Brenner, S. S., Metal Progress, 70, No. 5, 85 (1956).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
O'NEILL, H. Surface Hardening of Metals by Spark Discharge. Nature 181, 1421 (1958). https://doi.org/10.1038/1811421b0
Issue Date:
DOI: https://doi.org/10.1038/1811421b0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.