微弧氧化及其在镁合金腐蚀防护领域的研究进展

doi:10.11902/1005.4537.2018.036

中国腐蚀与防护学报

2018, Vol. 38

Issue (2): 87-104 DOI: 10.11902/1005.4537.2018.036

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微弧氧化及其在镁合金腐蚀防护领域的研究进展

崔学军(

), 平静

四川理工学院材料科学与工程学院自贡 643000

Research Progress of Microarc Oxidation for Corrosion Prevention of Mg-alloys

Xuejun CUI(

), Jing PING

School of Materials Science and Engineering, Sichuan University of Science and Engineering,Zigong 643000, China

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摘要:

简要综述了微弧氧化 (MAO) 及其火花放电机理研究的发展历程。重点根据近年来MAO在镁合金腐蚀防护领域的研究结果,详细综述了电源特性、工作模式、电参数、电解液、后处理、前处理等MAO工艺的进展情况,并指出了今后的发展趋势。同时,也提出了MAO技术在镁合金表面防护领域研究所存在的问题和建议。

关键词 ：镁合金, 涂层, 微弧氧化, 耐蚀性, 氧化工艺

Abstract：

This paper reviewed the development history of microarc oxidation (MAO) technique and the mechanism related with spark discharge process, with emphasis on the corrosion prevention for Mg-alloys in the past two decades. Various aspects of MAO coating of Mg-alloys and recent progress were summarized in detail, such as power types, operating modes, electrical parameters, electrolyte solutions, post- and pre-treatments. And the problems and suggestions of MAO technique for corrosion prevention of magnesium alloys were presented in the end．

Key words： magnesium alloy coating plasma electrolytic oxidation corrosion resistance oxidation process

收稿日期: 2018-02-12

基金资助:四川省科技支撑计划 (2016JZ0032) 和四川理工学院人才引进基金 (2017RCL15)

作者简介:

作者简介崔学军,男,1978年生,博士

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引用本文:

崔学军, 平静. 微弧氧化及其在镁合金腐蚀防护领域的研究进展[J]. 中国腐蚀与防护学报, 2018, 38(2): 87-104.
Xuejun CUI, Jing PING. Research Progress of Microarc Oxidation for Corrosion Prevention of Mg-alloys. Journal of Chinese Society for Corrosion and protection, 2018, 38(2): 87-104.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2018.036 或 https://www.jcscp.org/CN/Y2018/V38/I2/87

图1 MAO发展历程示意图

图2 MAO过程电流-电压关系示意图[2,34]

图3 恒压、恒流和恒功率模式所得MAO膜表面和截面形貌[53]

图4 不同脉冲频率下所得MAO膜的表面形貌[68]

Specie	Additive	Concentration	Basesolution	Substrate	Effect
Specie	Additive	Concentration	Basesolution	Substrate	Restraining sparking	Thickness	Hardness	Roughness	Anticorrosion	Ref.
Organic amine	Diethylenetriamine	0.5 mol/L	PO₄^3-	AZ91D	Yes	Un	In	Un	In	[93,94]
Organic amine	Triethylamine	40~60 g/L	PO₄^3-	AZ91D	Yes	Un	In	Un	In	[93,95]
	Hexamethylenetetramine	0.1 mol/L	SiO₃^2--PO₄^3-	AZ91D	Yes	Un	In	Un	In	[76]
	N,N,N',N'-Tetramethylethy-lenediamine	0.1 mol/L	SiO₃^2--PO₄^3-	AZ91D	Yes	Un	Un	De	In	[96]
	Triethanolamine	30 g/L	SiO₃^2--B₄O₇^2-	AZ91D	Yes	Un	Un	De	In	[97]
Organic acid	Aminoacetic acid	6.0 g/L	SiO₃^2--B₄O₇^2-	Mg-Li	Yes	In	Un	De	In	[98]
Organic acid	Terephthalic acid	2.0 g/L	B₄O₇^2-	AZ91D	Yes	De	Un	De	In	[99]
	Phytic acid	8.0 g/L	OH^-	AZ91HP	Yes	Un	Un	Un	In	[100]
	Tannic acid	4.0 g/L	SiO₃^2-	AZ91	Yes	In	Un	Un	In	[101]
	EDTA	0.03 mol/L	SiO₃^2-	AZ31	Yes	In	Un	Un	In	[102]
	Citric Acid	12 g/L	SiO₃^2-	AZ31	Yes	Un	Un	De	In	[103]
	Nitrilotriacetic acid	0.04 mol/L	SiO₃^2-	AZ31	Yes	In	Un	De	In	[104]
Salt of organic	Sodium of polyaspartic acid	19.2~28.8 g/L	SiO₃^2-	AZ31	Yes	Un	Un	De	In	[105]
acid	Trisodium citrate	10 g/L	SiO₃^2--B₄O₇^2-	ZK60	Yes	De	Un	Un	In	[106]
	Ferric citrate	15 g/L	PO₄^3-	AZ40M	Un	In	Un	Un	In	[107]
	Sodium citrate	0.5 g/L	SiO₃^2-	AZ31B	Yes	De	Un	De	De	[108]
	EDTA-2Na	1 g/L	SiO₃^2-	AZ31B	Yes	De	Un	De	De	[108]
	L-Ornithine acetate	0.03 mol/L	SiO₃^2-	AZ31	Yes	In	Un	Un	In	[92]
	Potassium biphthalate	4 g/L	B₄O₇^2-	AZ91D	Yes	De	Un	De	In	[109]
Alcohols	Glycerine	4 mL/L	SiO₃^2-	AZ91D	Yes	De	Un	De	In	[110]
	Ethylene glycol	10 g/L	SiO₃^2--B₄O₇^2-	AZ31B	Yes	In	Un	De	In	[111]
Organic	Glucose	10 g/L	SiO₃^2-	AZ31B	Yes	In	Un	De	In	[112]
sugars	Sucrose	10 g/L	SiO₃^2-	AZ31B	Yes	Un	Un	De	In	[113]
Aromatic	1H-Benzotriazole	5 g/L	SiO₃^2-	AZ31B	Yes	In	Un	De	In	[114]
compounds	8-Hydroxyquinoline	2 g/L	SiO₃^2-	AZ91	Yes	In	Un	Un	In	[115]
Siloxane	KH-550	4~7 mL/L	SiO₃^2-	AZ31B	Yes	In	Un	De	In	[116]
Organic	Polytetra-	18 g/L	PO₄^3-	AM60	No	De	Un	Un	In	[117]
fluorine	fluoroethylene			MA8						[118]

表1 有机添加种类、用量及作用[93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118]

表2 无机添加种类、用量及作用[119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143]

图5 MAO改性前后的表面形貌及其表面接触角[151]

图6 铈盐封孔MAO膜的表面和截面形貌及其元素分布[155]

图7 镁合金自封孔微弧氧化膜的表面形貌[157,158]

图8 不同外加电场电压下膜层的表面形貌[160]

图9 一步和两步工艺制备的MAO膜的表面和截面形貌[162]

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