著者

山口 洋 久松 敬弘

出版者

The Iron and Steel Institute of Japan

雑誌

鉄と鋼 (ISSN:00211575)

巻号頁・発行日

vol.60, no.1, pp.96-103, 1974-01-01 (Released:2010-10-12)

参考文献数

12

被引用文献数

13 13

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A study has been carried out on the dross formation in continuous galvanizing in relation to the aluminiumcontent in the bath.Iron and aluminium concentrations in drosses formed in conventional galvanizing lines are determined.In the laboratory, Zn alloys containing 0.22% Pb, 0.13-4.60% Al and 0.066-0.24% Fe are molten ingraphite crucibles and held at 465°C for 40hrs before cooling. Using the sectioned ingots, spectroscopic analysisof the portions free from dross and quantitative microscopy analysis of dross compounds are performed:On the basis of these results, the amount of dross and that of aluminium consumed in the dross formationreaction in conventional processes are estimated. Conclusions derived are as follows:Drosses contain two compounds, namely δ and Fe2Al5.When the aluminium content in the bath is in the range of 0.09-0.14%, δ and Fe2Al5 can coexist. Inthis case the higher the aluminium content, the lower the fraction of δ-compound. When the aluminiumcontent is higher than 0.15% the δ-compound can not be found.The amount of the bottom dross is estimated to decrease rapidly with increasing the aluminium contentin the bath up to 0.14% and becomes negligible above 0.15% Al. The amount of the top dross, however, increasesrapidly with increasing the aluminium content up to 0.14% and decreases gradually above 0.15% Al.The amount of aluminium consumed in the dross formation reaction is estimated proportional to the amount of iron dissolved from sheets.

著者

小川 芳樹 久松 敬弘 河村 和孝

出版者

公益社団法人 日本金属学会

雑誌

日本金属学会誌 (ISSN:00214876)

巻号頁・発行日

vol.21, no.10, pp.597-599, 1957 (Released:2008-04-04)

参考文献数

6

被引用文献数

1

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A method for preparing protective coating on mild steel has been dealt with. The principle lies in that titanium can be deposited on a steel sheet when it is immersed side by side with a titanium sheet or titanium powder in a fused-salt bath consisting of NaCl, KCl or NaCl-KCl mixture. The thickness of the coating obtained depends mainly on temperature and time but not on the initial bath composition. Pyrosol of titanium may have been produced during the process. The microvickers hardness of the titanium coating has been found to be 400∼600 and a salt spray test has revealed high corrosion resistivity.

著者

久松 敬弘

出版者

一般社団法人 表面技術協会

雑誌

金属表面技術 (ISSN:00260614)

巻号頁・発行日

vol.34, no.7, pp.354-360, 1983-07-01 (Released:2009-10-30)

参考文献数

16

被引用文献数

3 3