铸造Al-14Si-5Cu-3Ni-1Mg合金微弧氧化陶瓷层的结构与性能

郭巧琴; 李建平; 夏峰; 郭永春; 李高宏; 杨忠

轻有色合金 | 浏览量 : 0 下载量: 153 CSCD: 1

导出
分享
收藏
专辑

铸造Al-14Si-5Cu-3Ni-1Mg合金微弧氧化陶瓷层的结构与性能
Microstructure and Properties of the Ceramic Coating Formed by Micro-arc Oxidation on a Cast Hypereutectic Aluminum Alloy
2009年29卷第5期页码：471-473
纸质出版日期： 2009 ，
DOI：

扫描看全文

[1]郭巧琴,李建平,夏峰,郭永春,李高宏,杨忠.铸造Al-14Si-5Cu-3Ni-1Mg合金微弧氧化陶瓷层的结构与性能[J].特种铸造及有色合金,2009,29(05):471-473+391.

Guo Qiaoqin1, Li Jianping1, Xia Feng1, et al. Microstructure and Properties of the Ceramic Coating Formed by Micro-arc Oxidation on a Cast Hypereutectic Aluminum Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(5):471-473.
[1]郭巧琴,李建平,夏峰,郭永春,李高宏,杨忠.铸造Al-14Si-5Cu-3Ni-1Mg合金微弧氧化陶瓷层的结构与性能[J].特种铸造及有色合金,2009,29(05):471-473+391. DOI：

Guo Qiaoqin1, Li Jianping1, Xia Feng1, et al. Microstructure and Properties of the Ceramic Coating Formed by Micro-arc Oxidation on a Cast Hypereutectic Aluminum Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(5):471-473. DOI：

摘要

采用显微硬度、XRD、SEM、极化曲线测量、DSC、TG等技术研究了铸造Al-14Si-5Cu-3Ni-1Mg微弧氧化陶瓷层的相组成、形貌、硬度、耐腐蚀性、耐热冲击性和热稳定性。结果表明

该合金微弧氧化陶瓷层由致密层和疏松层组成

致密层主要为α-Al2O3相

疏松层主要为γ-Al2O3及无定型相

微弧氧化陶瓷层硬度（HV）高达2400

合金的耐蚀性显著提高

抗热冲击性和热稳定性良好。

Abstract

The phase constituent

morphology

hardness

corrosion resistance

thermal-shock resistance and thermal stability of the ceramic coatings produced by micro-arc oxidation on a cast hypereutectic Al-14Si-5Cu-3Ni-1Mg alloy were analyzed by micro-hardness testing

XRD（X-ray diffraction）

SEM（scanning electron microscope）

the Tafel curves

DSC（differential scanning calorimetry）and TG（thermal-gravity）.It is found that the ceramic coating consists of a compact layer composed of α-Al

phase and a loose layer composed of γ-Al

phase and amorphous phase

which is responsible for the improvement of the corrosion resistance.Meanwhile

the hardness of the ceramic coating reaches HV 2400 with desirable thermal-shock resistance and thermal stability.