发明名称 |
Zincate-treated article of Al-Mg-Si base alloy and method of manufacturing the same |
摘要 |
A zincate-treated article of an Al-Mg-Si base alloy has a zincate coating film having a Zn crystal grain size of 1.0 mu m or smaller on an Al-Mg-Si base alloy body having a Cu content of 0.1 to 1.5 weight %. The Zn crystal grain size is preferably equal to or smaller than 0.95 mu m. This zincate-treated article can be manufactured by treating an Al-Mg-Si base alloy body having a Cu content of 0.1 to 1.5 weight % in a zincating treatment bath containing 100 to 300 g/l of sodium hydroxide, 5 to 20 g/l of zinc oxide, 2 to 10 g/l of iron chloride, 5 to 20 g/l of Rochelle salt and 50 to 200 ml/l of water glass at a temperature of 20 DEG to 80 DEG C. for 5 to 60 seconds. By adjusting the Zn crystal grain size in the zincating treatment in this manner, a zincate-treated article of an Al-Mg-Si base alloy having an excellent adhesion can be acquired even in a single stage zincating treatment.
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申请公布号 |
US5795662(A) |
申请公布日期 |
1998.08.18 |
申请号 |
US19960628518 |
申请日期 |
1996.04.05 |
申请人 |
KOBE ALCOA TRANSPORTATION PRODUCTS LTD. |
发明人 |
MAEZONO, SHUNICHIRO;TAWARA, MAKOTO;TOYOSE, KIKUO |
分类号 |
C23C22/12;C22C21/00;C23C22/78;C25D5/44;(IPC1-7):B32B15/20;C23C22/66 |
主分类号 |
C23C22/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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