Preparation and characterisation of aluminium pigments coated with silica for corrosion protection

被引：66

作者：

Zhang, Yingchao ^{[1
]}

Ye, Hongqi ^{[1
]}

Liu, Hui ^{[1
,2
]}

Han, Kai ^{[1
]}

机构：

[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China

[2] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

来源：

CORROSION SCIENCE | 2011年 / 53卷 / 05期

基金：

中国博士后科学基金;

关键词：

Aluminium; Alkaline corrosion; SEM; AFM; COMPOSITE PARTICLE; INHIBITORS; OPTIMIZATION; SURFACE; ACID;

D O I：

10.1016/j.corsci.2011.01.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Aluminium pigments with a layer of silica were prepared by a sol-gel method using tetraethoxysilane as precursor and ethylenediamine as catalyst. Under the optimum conditions, the corrosion protection factor can reach 99.3% and average grain almost remains the same size after coating, indicating that the coated aluminium pigments have excellent chemical stability and good dispersibility. FTIR and EDS analyses demonstrate that a layer of silica coating has been formed on the flaky aluminium particle. SEM, AFM and BET analyses show that a smooth and dense silica coating layer has been formed. (c) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1694 / 1699

页数：6

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