發(fā)布時間：2018-03-17 04:00

  本文選題：熱浸鍍　切入點(diǎn)：高爾凡　出處：《中國表面工程》2017年05期 　論文類型：期刊論文

【摘要】：為在結(jié)構(gòu)鋼件表面獲得質(zhì)量優(yōu)良的高耐蝕性Galfan合金鍍層,嘗試在450℃先預(yù)鍍純鋅再浸鍍Galfan合金的雙鍍方法,并研究預(yù)鍍時間和浸鍍時間對鍍層組織及耐蝕性的影響。結(jié)果表明,450℃預(yù)鍍5 s以上的純鋅后再浸鍍Galfan合金,鍍層表面質(zhì)量優(yōu)良。鍍層主要由Fe_2Al_5-Znx、FeAl_3-Znx和合金液的凝固組織組成,沒有Fe-Zn化合物。隨預(yù)鍍時間增加,FeAl3-Znx+G(液相凝固組織)層變厚;隨浸鍍時間的增加,Fe_2Al_5-Znx層厚度逐漸增加,并逐漸形成FeAl_3-Znx層。FeAl3-Znx+G兩相層在浸鍍60 s以下均能穩(wěn)定存在。通過電化學(xué)測試發(fā)現(xiàn),雙鍍Galfan合金鍍層耐蝕性明顯優(yōu)于純鋅鍍層,但延長浸鍍Galfan合金時間會降低鍍層的耐蝕性。
[Abstract]:In the structure of steel surface quality and high corrosion resistance of Galfan alloy coating, to 450 degrees in the pre plating zinc plating method and double dip Galfan alloy, and pre plating time and immersion time effect on Microstructure and corrosion resistance of the coating. The results show that 450 C 5 s pre plated with pure zinc the after dipping Galfan alloy coating with excellent surface quality. The coating is mainly composed of Fe_2Al_5-Znx, and the solidification structure of FeAl_3-Znx alloy liquid composition, no Fe-Zn compounds. With pre plating time increased, FeAl3-Znx+G (liquid phase solidification) layer thickness; with the increase of immersion time, the thickness of Fe_2Al_5-Znx layer increased gradually, and gradually formed the FeAl_3-Znx layer.FeAl3-Znx+G layer in two-phase dip below 60 s are stable. Electrochemical tests showed that the double plating of Galfan alloy corrosion resistance is better than that of pure zinc coating, but the extension of time will reduce the dip Galfan alloy coating Corrosion resistance.

【作者單位】： 常州大學(xué)江蘇省材料表面科學(xué)與技術(shù)重點(diǎn)實(shí)驗室;常州大學(xué)江蘇省光伏科學(xué)與工程協(xié)同創(chuàng)新中心;
【基金】：國家自然科學(xué)基金(51471037,51201023)~~
【分類號】：TG174.44

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本文編號：1623033