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Na2SiO3系溶液中Ti6A14V微弧氧化陶瓷膜的結(jié)構(gòu)與力學(xué)性能
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TG174.45

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Microstructure and Mechanical Properties of Ceramic Coatings Produced on Ti6A14V by Micro-arc Oxidation in Na2SiO3 Solution
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    摘要:

    采用交流微弧氧化法于Na2SiO3-KOH-（NaPO3)6-NaAlO2溶液中在Ti6A14V表面形成了氧化物陶瓷膜。用掃描電鏡和X射線衍射研究了陶瓷膜的組織形貌和相組成，用Nano IndenterXP系統(tǒng)研究膜層的力學(xué)特性。結(jié)果表明：氧化膜分為3層，即過渡層、致密層與疏松層。膜層主要由金紅石相TiO2及少量銳鈦礦相TiO2組成。膜層中致密層與基底的彈性回復(fù)分別為40.5%和14.9%，硬度分別為8.54GPa和5.5GPa，彈性模量分別為87.4GPa和150GPa，膜層表現(xiàn)出明顯的陶瓷特征。

    Abstract:

    Ceramic oxide coatings were fabricated on a Ti6Al4V alloy surface by micro-arc oxidation (MAO) in Na2SiO3-KOH-(NaPO3)6-NaAlO2 solution using an AC power supply. Microstructure, phase and composition of ceramic coatings were characterized by SEM and XRD respectively. Mechanical properties were studied using a Nano Indenter XP system. The results show that ceramic coatings possess three layers transitional, dense and loose layer, composed mainly of rutile TiO2 and a small amount of anatase TiO2. Elastic recovery is 40.5% and 14.9%, hardness is 8.54 GPa and 5.5 GPa, and elastic modulus is 87.4 GPa and 150 GPa in the dense layer and the substrate, respectively, The MAO coating indicates pronounced ceramic characteristics.

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王亞明 蔣百靈 雷廷權(quán) 郭立新 曹躍平. Na2SiO3系溶液中Ti6A14V微弧氧化陶瓷膜的結(jié)構(gòu)與力學(xué)性能[J].稀有金屬材料與工程,2004,33(5):502~506.[Wang Yaming, Jiang Bailing, Lei Tingquan, Guo Lixin, Cao Yueping. Microstructure and Mechanical Properties of Ceramic Coatings Produced on Ti6A14V by Micro-arc Oxidation in Na2SiO3 Solution[J]. Rare Metal Materials and Engineering,2004,33(5):502~506.]
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  • 最后修改日期:2002-09-16
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