2O3微粉;改性機理"/> 2O3微粉對AZ31A鎂合金微弧氧化膜特性影響,在不同濃度Al2O3微粉電解液中對其進行了微弧氧化處理。利用掃描電鏡(SEM)觀察微弧氧化膜形貌,能譜儀(EDS)分析了膜層表面Ca、Mg、O、Al元素分布,X射線衍射儀(XRD)分析了相組成,測定了膜厚、硬度和氧化液中Al2O3表面電荷,討論了摻雜改性機理。結(jié)果表明,加入Al2O3微粉后,氧化電壓隨Al2O3添加量增加先增加后降低；氧化膜表面孔洞數(shù)量和尺寸減小,膜層表面Ca元素分布逐漸減少,成膜效率降低,膜層致密度和表面疏松層硬度提高,氧化膜主要由MgO和MgO4等相組成。"/>

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Al2O3微粉添加量對鎂合金微弧氧化膜特性影響研究
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西南石油大學(xué)材料科學(xué)與工程學(xué)院,西南石油大學(xué)材料科學(xué)與工程學(xué)院,西南石油大學(xué)材料科學(xué)與工程學(xué)院,西南石油大學(xué)材料科學(xué)與工程學(xué)院,西南石油大學(xué)材料科學(xué)與工程學(xué)院,西南石油大學(xué)材料科學(xué)與工程學(xué)院,西南石油大學(xué)材料科學(xué)與工程學(xué)院

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西南石油大學(xué)科研啟航計劃項目(2015QHZ020)資助,四川省高等學(xué)校油氣田材料重點實驗室資助項目(X151515KCL16)


Effects of Al2O3Micro Powder Additive Amount on Characteristics of Micro-arc Oxidation Coating Formed on Magnesium Alloy
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College of Material Science and Engineering,Southwest Petroleum University,State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu,Sichuan,College of Material Science and Engineering,Southwest Petroleum University,State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu,Sichuan,College of Material Science and Engineering,Southwest Petroleum University,State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu,Sichuan,College of Material Science and Engineering,Southwest Petroleum University,State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu,Sichuan,College of Material Science and Engineering,Southwest Petroleum University,State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu,Sichuan,College of Material Science and Engineering,Southwest Petroleum University,State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu,Sichuan,College of Material Science and Engineering,Southwest Petroleum University,State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu,Sichuan

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    摘要:

    為了研究添加Al2O3微粉對AZ31A鎂合金微弧氧化膜特性影響,在不同濃度Al2O3微粉電解液中對其進行了微弧氧化處理。利用掃描電鏡(SEM)觀察微弧氧化膜形貌,能譜儀(EDS)分析了膜層表面Ca、Mg、O、Al元素分布,X射線衍射儀(XRD)分析了相組成,測定了膜厚、硬度和氧化液中Al2O3表面電荷,討論了摻雜改性機理。結(jié)果表明,加入Al2O3微粉后,氧化電壓隨Al2O3添加量增加先增加后降低；氧化膜表面孔洞數(shù)量和尺寸減小,膜層表面Ca元素分布逐漸減少,成膜效率降低,膜層致密度和表面疏松層硬度提高,氧化膜主要由MgO和MgO4等相組成。

    Abstract:

    In order to research the effects of Al2O3 micro powder additive amount on characteristics of micro-arc oxidation coating formed on AZ31A magnesium alloy, it was treated by using micro-arc oxidation in different concentration of Al2O3 micro powder electrolyte. Surface morphologies, Ca, Mg, O and Al elements distribution, phase composition of micro-arc oxidation coating were analyzed by SEM, EDS and XRD. Thickness and hardness of micro-arc oxidation coating and surface charge of Al2O3 micro powder in electrolyte were measured. The doping modification mechanism was discussed in this paper. The results show that the oxidation voltage was raised firstly and then declined gradually while Al2O3 micro powder amount increasing. The numbers and sizes of hole and distribution of Ca element on oxidation coating surface and formation efficiency decreased, compactness of coating, and the hardness of surface porosity coating increased. Oxidation coating was mainly composed by MgO and MgO4 phase.

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王平,伍婷,肖佑濤,蒲俊,徐明,向春浪,郭小陽. Al2O3微粉添加量對鎂合金微弧氧化膜特性影響研究[J].稀有金屬材料與工程,2017,46(5):1260~1264.[WANG Ping, WU Ting, Xiao You-tao, Pu Jun, XU Ming, XIANG Chun Lang, GUO Xiao-yang. Effects of Al2O3Micro Powder Additive Amount on Characteristics of Micro-arc Oxidation Coating Formed on Magnesium Alloy[J]. Rare Metal Materials and Engineering,2017,46(5):1260~1264.]
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  • 收稿日期:2016-01-05
  • 最后修改日期:2016-06-29
  • 錄用日期:2016-07-15
  • 在線發(fā)布日期: 2017-09-27
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