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应用SEM、EPMA等方法研究了锌浴中镍含量对热浸锌镀层厚度的影响,试验结果表明:当锌浴中镍含量小于0.12% (wt)时,镀层随镍含量增加而减薄;当镍含量大于0.12%时,镀层则随镍含量增加而增厚。在热镀锌生产线上对0.10%以下的不同镍含量锌浴的应用结果表明:为了兼顾不同产品对最低镀层厚度的要求,镍含量可在0.04%~0.10%间选择,这时由于减少了镀层超厚,节锌效果明显。

The effect of Ni content in Zn bath on thickness of hot dip galvanized coating was studied using SEM. It showed thatwith the Ni content increasingthe coating thickness increased when the nickel content < 0.12 %,and then decreased when Ni content >0.12%. The industrial practice showed that the Ni content can be chosen in a range of 0.04%~0.10%which results in satisfactory coating thickness and saves zinc because of reducing the excess coating thickness.

参考文献

[1] Richard F L .Hot-Dip Galvaniging Alloy[J].Journal of The Minerals,Metals & Materials Society,1987,39(08):39-41.
[2] Chen Z W;Kennon N F;See J B .Technigalva and other developments in batch hot- dip galvanizing[J].Journal of the Minerals,Metals & Materials Society,1992,44(01):22-26.
[3] See J B.Technical acpects of general galvanizing in Australia[C].Asian-Pacific General Galvanizing Conf Kobe:JGA,1994:58.
[4] 卢锦堂.热镀锌浴加镍抑制圣德林效应的探讨[J].材料保护,1995(03):9.
[5] 卢锦堂.热浸锌镍合金工艺及镀层性能[J].材料保护,1996(09):11.
[6] Reumont G;Dauphin J Y.The role of nickel on the galvanizing reaction[A].Tokyo:JI SI,1989:443.
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