张菊梅,李嘉诚,侯安荣,段鑫,王博

• 1:西安科技大学材料科学与工程学院
• 2:国网陕西省电力公司电力科学研究院

摘要(Abstract)：

为了更好地提高LA103Z镁锂合金的耐蚀性,采用原位水热法在其表面微弧氧化(MAO)膜层上制备了Mg-Al-Co层状双金属氢氧化物(LDH)膜层。采用扫描电镜(SEM)、能谱仪(EDS)和X射线衍射(XRD)等分析了膜层的微观形貌、成分以及物相,采用浸泡、析氢及摩擦磨损实验对膜层的耐蚀性及磨损性能进行了表征。结果表明:随着水热时间的延长,LDH纳米片间距逐渐减小,膜层致密,并成功密封了MAO膜层表面的微孔及微裂纹。浸泡及析氢实验表明,不同水热时间处理的LDH/MAO复合膜层及MAO膜层的耐蚀性由大到小依次为LDH/MAO-24 h>LDH/MAO-30 h>LDH/MAO-18 h>LDH/MAO-12 h>MAO。摩擦磨损实验表明,相比MAO膜层和基体,复合膜层的磨痕宽度较窄,摩擦系数也有所降低。可见,Mg-Al-Co LDH/MAO复合膜层在提高合金耐蚀性的同时,也使其耐磨性有所改善。

关键词(KeyWords)： 镁锂合金;LDH/MAO复合膜层;微观组织;耐蚀耐磨性

Abstract:

Keywords:

基金项目(Foundation): 陕西省教育厅专项科研计划项目(14JK1465);; 2020年陕西省大学生创新创业训练计划项目(S202010704129)

作者(Author): 张菊梅,李嘉诚,侯安荣,段鑫,王博

DOI: 10.13289/j.issn.1009-6264.2021-0349

参考文献(References)：

• [1] 王保杰，姜春龙，李传强，等.镁锂合金腐蚀行为研究进展[J].航空材料学报，2019,39(1):1-8.WANG Bao-jie,JIANG Chun-long,LI Chuan-qiang,et al.Advances in the study of corrosion behavior of magnesium lithium alloys[J].Journal of Aeronautical Materials,2019,39(1):1-8.
• [2] Li C Q,Xu D K,Chen X B,et al.Composition and microstructure dependent corrosion behaviour of Mg-Li alloys[J].Electrochemical Acta,2017,260:55-64.
• [3] Wang X J,Xu D H,Wu R Z,et al.What is going on in magnesium alloys?[J].Journal of Materials Science and Technology,2018,34(2):245-247.
• [4] Wu R Z,Yan Y,Wang G,et al.Recent progress in magnesium-lithium alloys[J].International Materials Reviews,2015,60(2):65-100.
• [5] Kumar A M,Kwon S H,Jung H C,et al.Corrosion protection performance of single and dual plasma electrolytic oxidation (PEO) coating for aerospace applications[J].Materials Chemistry and Physics,2015,149:480-486.
• [6] Darband G B,Aliofkhazraei M,Hamghalam P,et al.Plasma electrolytic oxidation of magnesium and its alloys:Mechanism,properties and applications[J].Journal of Magnesium and Alloys,2017,5(1):74-132.
• [7] Sreekanth D,Rameshbabu N,Venkateswarlu K.Effect of various additives on morphology and corrosion behavior of ceramic coatings developed on AZ31 magnesium alloy by plasma electrolytic oxidation[J].Ceramics International,2012,38(6):4607-4615.
• [8] 董海荣，马颖，郭惠霞，等.不同加压方式下镁合金微弧氧化膜结构及耐蚀性的变化规律[J].稀有金属材料与工程，2017,46(6):1654-1661.DONG Hai-rong,MA Ying,GUO Hui-xia,et al.Changes of micro-arc oxidation film structure and corrosion resistance of magnesium alloy under different pressing methods[J].Rare Metal Materials and Engineering,2017,46(6):1654-1661.
• [9] Yu H J,Dong Q,Dou J H,et al.Structure and in vitro bioactivity of ceramic coatings on magnesium alloys by microarc oxidation[J].Applied Surface Science,2016,388:114-119.
• [10] Fu L H,Dong C F,Li X G,et al.Electrochemical behaviors of magnesium alloy with phosphate conversion coating in NaCI solutions[J].Rare Metals,2016(10):747-757.
• [11] Guo L,Wu W,Zhou Y F,et al.Layered double hydroxide coatings on magnesium alloys:A review[J].Journal of Materials Science and Technology,2018,34(9):1455-1466.
• [12] 王志虎，张菊梅，白力静，等.AZ91镁合金表面微弧氧化与化学镀铜复合处理层的微观组织与性能[J].中国腐蚀与防护学报，2018,38(4):85-90.WANG Zhi-hu,ZHANG Ju-mei,BAI Li-jing,et al.AZ91 magnesium alloy surface micro-arc oxidation and chemical copper plated composite treatment layer of micro-tissue and performance[J].Chinese Journal of Corrosion and Protection,2018,38(4):85-90.
• [13] Hua Y L,Zhang Z G,Li W.Microstructure and degradation properties of C-containing composite coatings on magnesium alloy wires treated with micro-arc oxidation[J].Surface and Coatings Technology,2016,291:70-78.
• [14] Zhang G,Wu L,Tang A T,et al.Growth behavior of MgAl-layered double hydroxide films by conversion of anodic films on magnesium alloy AZ31 and their corrosion protection[J].Applied Surface Science,2018,456:419-429.
• [15] Chen J F,Lin W X,Liang S Y,et al.Effect of alloy cations on corrosion resistance of LDH/MAO coating on magnesium alloy[J].Applied Surface Science 2019,463:535-544.
• [16] Peng F,Wang D H,Tian Y X,et al.Sealing the pores of PEO coating with Mg-Al layered double hydroxide:enhanced corrosion resistance,cytocompatibility and drug delivery ability[J].Scientific Reports,2017,7(1):8167.
• [17] Wang Z H,Zhang J M,Li Y,et al.Corrosion resistance enhancement of micro-arc oxidation ceramic layer by Mg-Al-Co layered double hydroxide coating[J].Transactions of the Indian Ceramic Society,2020,79(2):59-66.

文章评论(Comment)：