Journal of the Korean institute of surface engineering (한국표면공학회지)
- Volume 34 Issue 4
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- Pages.303-312
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- 2001
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- 1225-8024(pISSN)
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- 2288-8403(eISSN)
The effect of pulse current electrolysis on the composition and themicrostructure of Tin-Zinc electrodeposits
주석-아연 합금도금층의 조성 및 조직에 미치는 파형전류전해의 영향
Abstract
Composition and microstructure of the tin-zinc alloys electroplated in gluconate bath were studied according to pulse current parameters. The cathode current efficiency increased with both the mean current density and the off-time decrease. Zinc content of the alloy deposits increased with increasing mean current density, while it decreased noticebly with increasing the off-time from 10-30ms to 100-150ms. The preferred orientation of the alloy deposits changed with the increase of peak current density in the sequence of (220)longrightarrow(220)+(420) or (220)+(420)+(321) mixed structure. The equiaxed grain size of the alloy increased with the increase of off-time and the decrease of mean current density.
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