2;摻雜機(jī)理"/> 2對(duì)鋁合金微弧氧化成膜作用機(jī)理,在不同濃度納米TiO2電解液中對(duì)其進(jìn)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Ti、Al、O等元素含量,X射線衍射儀(XRD)分析了相組成,測(cè)定了膜厚、硬度和氧化液中TiO2表面電荷,建立了摻雜改性模型。結(jié)果表明,加入納米TiO2后,氧化初期電壓隨TiO2添加量增加逐漸升高、5min后電壓逐漸降低；氧化膜表面孔洞數(shù)量和尺寸減小,成膜效率、膜層致密度和表面疏松層硬度提高。納米TiO2在氧化膜表面均勻分布,截面不均勻分布。氧化膜主要由γ-Al2O3、Mullite和少量Si組成。"/>

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鋁合金微弧氧化膜納米TiO2摻雜機(jī)理研究
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西南石油大學(xué),西南石油大學(xué),西南石油大學(xué),西南石油大學(xué),西南石油大學(xué),西南石油大學(xué)

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TG174.4

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油氣藏地質(zhì)及開發(fā)工程國(guó)家重點(diǎn)實(shí)驗(yàn)室(西南石油大學(xué))資助項(xiàng)目( PLN1307), 國(guó)家級(jí)大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計(jì)劃資助項(xiàng)目( 201410615021),四川省高等學(xué)校油氣田材料重點(diǎn)實(shí)驗(yàn)室資助項(xiàng)目(X151514KCL05)。


Mechanism Research of Nano TiO2 Doping Micro-arc Oxidation Coating on Aluminum Alloy
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StateKeyLaboratoryof Oil andGasReservoirGeologyandExploitation,College of Material Science and Engineering,Southwest Petroleum University,Chengdu,Sichuan,StateKeyLaboratoryof Oil andGasReservoirGeologyandExploitation,College of Material Science and Engineering,Southwest Petroleum University,Chengdu,Sichuan,StateKeyLaboratoryof Oil andGasReservoirGeologyandExploitation,College of Material Science and Engineering,Southwest Petroleum University,Chengdu,Sichuan,StateKeyLaboratoryof Oil andGasReservoirGeologyandExploitation,College of Material Science and Engineering,Southwest Petroleum University,Chengdu,Sichuan,StateKeyLaboratoryof Oil andGasReservoirGeologyandExploitation,College of Material Science and Engineering,Southwest Petroleum University,Chengdu,Sichuan,StateKeyLaboratoryof Oil andGasReservoirGeologyandExploitation,College of Material Science and Engineering,Southwest Petroleum University,Chengdu,Sichuan

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    摘要:

    為了研究摻雜納米TiO2對(duì)鋁合金微弧氧化成膜作用機(jī)理,在不同濃度納米TiO2電解液中對(duì)其進(jìn)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Ti、Al、O等元素含量,X射線衍射儀(XRD)分析了相組成,測(cè)定了膜厚、硬度和氧化液中TiO2表面電荷,建立了摻雜改性模型。結(jié)果表明,加入納米TiO2后,氧化初期電壓隨TiO2添加量增加逐漸升高、5min后電壓逐漸降低；氧化膜表面孔洞數(shù)量和尺寸減小,成膜效率、膜層致密度和表面疏松層硬度提高。納米TiO2在氧化膜表面均勻分布,截面不均勻分布。氧化膜主要由γ-Al2O3、Mullite和少量Si組成。

    Abstract:

    In order to research the mechanism of nano TiO2 doping effect on micro-arc oxidation coating formed on aluminum alloy, it was treated by using micro-arc oxidation in different concentration of nano TiO2 electrolyte. Surface morphologies,Ti, Al,O and elements content, 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 nano TiO2 in electrolyte were measured. The doping modification model was established in this paper. The results show that the oxidation voltage were raised at initial stage, and then declined after 5minutes.The numbers and sizes of hole on oxidation coating surface decreased, formation efficiency and compactness of coating, and the hardness of surface porosity coating increased. The nano TiO2 was distributed homogeneous on oxidation coating surface, and inhomogeneous on cross-section. Oxidation coating was mainly composed by γ-Al2O3, mullite and little Si phase.

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王平,伍婷,李杰,賈昕昊,龔成龍,郭小陽.鋁合金微弧氧化膜納米TiO2摻雜機(jī)理研究[J].稀有金屬材料與工程,2017,46(2):479~483.[Wang Ping, Wu Ting, Li Jie, Jia Xin-hao, Gong Chen-long, Guo Xiao-yang. Mechanism Research of Nano TiO2 Doping Micro-arc Oxidation Coating on Aluminum Alloy[J]. Rare Metal Materials and Engineering,2017,46(2):479~483.]
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  • 收稿日期:2015-01-03
  • 最后修改日期:2015-01-26
  • 錄用日期:2015-03-25
  • 在線發(fā)布日期: 2017-04-10
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