Analysis of Origination and Its Countermeasures on Surface Speckle Corrosion in Aluminum Extruded Profile

Views : 0 下载量: 160 CSCD: 2

Analysis of Origination and Its Countermeasures on Surface Speckle Corrosion in Aluminum Extruded Profile
Vol. 31, Issue 1, Pages: 20-22(2011)
Published： 2011 ，
DOI：

扫描看全文

[1]张建新,王海娟.铝型材表面斑点腐蚀的成因与对策分析[J].特种铸造及有色合金,2011,31(01):20-22+102.

Zhang Jianxin, Wang Haijuan. Analysis of Origination and Its Countermeasures on Surface Speckle Corrosion in Aluminum Extruded Profile. [J]. Special Casting & Nonferrous Alloys 31(1):20-22(2011)
[1]张建新,王海娟.铝型材表面斑点腐蚀的成因与对策分析[J].特种铸造及有色合金,2011,31(01):20-22+102. DOI：

Zhang Jianxin, Wang Haijuan. Analysis of Origination and Its Countermeasures on Surface Speckle Corrosion in Aluminum Extruded Profile. [J]. Special Casting & Nonferrous Alloys 31(1):20-22(2011) DOI：

以6063铝型材为研究对象

采用模拟槽液

经SEM及EPMA等试验方法分析了表面斑点腐蚀的本质和发生机理

并给出了控制斑点腐蚀的措施。研究表明

斑点缺陷的实质是点蚀

它是由游离Si、FeSiAl等阴极相周围铝溶解而形成的表面缺陷

外部特征表现为部分带有残留物的腐蚀坑和部分无残留物的腐蚀坑。点蚀的发生与Si元素过剩及挤压工艺有关。

Origination and formation mechanism of surface speckle corrosion on the 6063 extruded profile were analyzed by analogue bath solution

SEM（scanning electron microscope）and EPMA

and its countermeasures were presented.The results show that speckle defects belong to spot erosion

which is formed from aluminum dissolution around cathode phase of free Si and FeSiAl

classified by surface defects.The appearance of the speckle exhibits erosion pit with residual phase and partial residual phase free

which is related to excessive Si element and extrusion process.

铝型材斑点腐蚀机理对策

Aluminum Extruded ProfileSpeckle CorrosionMechanismCountermeasures

Alert me when the article has been cited

提交