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Abstract
Experiments are described in which one side of a low-carbon steel strip has been clad with zinc by a roll-compaction technique. Coating weights in the range 0·7–2·4 oz/ft2 have been applied successfully to prepared steel strip using – 200-mesh atomized zinc powders. These coatings, after a brief diffusion heat-treatment at 315–400°C, have performed well in 4T bend tests, and appeared to be comparable to coatings obtained conventionally by continuous hot-dip galvanizing. Variables involved in surface preparation of the steel strip, roll compaction, and diffusion-bonding treatments have been studied and are discussed in some detail. Metallography has been used to examine the nature of the zinc/steel interface before and after heat–treatment, and to determine the sources of flaking and cracking in some coatings during a bend test.
Notes
* Manuscript received 22 February 1965.