采用卷入能力强的机械搅拌法制备Zn-4.5Al-RE-Mg-Ti(ZA)合金和纳米CeO_2团簇的初步混合体,然后用高能超声对卷入的CeO_2颗粒团进行分散,从而得到名义质量分数1%～6%的复合材料(ZACs).OM观察结果表明,ZACs的室温金相组织主要包括呈小岛状分布的α(Al)+βZn)共析组织和呈层片状分布的α+β组织.FE-SEM的结果表明,用该法制备的ZACs中纳米CeO_2微粒分布均匀.
The prime mixture of Zn-4.5Al-RE-Mg-Ti alloy (ZA) and nano-CeO_2 clusters was prepared by mechanical stirring method with high engulfing ability. Then the engulfed nano-CeO_2 clusters were dispersed by high-intensity ultrasonic to obtain nano-CeO_2/ZA composites (ZACs) with the nominal mass fractions of 1%-6%. The optical microscope observations show that the microstructure of ZACs at room temperature consists of island-like eutectoid structure α(Al)+β(Zn) and lamellar structure α+β. Based on the FE-SEM results, nano-CeO_2 particulates could be homogeneously distributed in the ZACs prepared by the combination stirring technology.
参考文献
| [1] | Uraiwan L A;Takuya M;Yoshitomo K et al.[J].Ceramics International,2005,31(06):803. |
| [2] | Zhang Z;Chen D L .[J].Scripta Materialia,2006,54(07):1321. |
| [3] | Shi L;Sun CF;Gao P;Zhou F;Liu WM .Mechanical properties and wear and corrosion resistance of electrodeposited Ni-Co/SiC nanocomposite coating[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2006(10):3591-3599. |
| [4] | 魏霖,陈哲,严有为.块体金属基纳米复合材料的制备技术[J].特种铸造及有色合金,2006(07):420-423. |
| [5] | Mo C B;Cha S I;Kim K T et al.[J].Materials Science and Engineering A,2005,395(01):124. |
| [6] | 龚荣洲,沈翔,张磊,张凌.金属基纳米复合材料的研究现状和展望[J].中国有色金属学报,2003(05):1311-1320. |
| [7] | Joardar J;Pabi S K;Murty B S .[J].Journal of Alloys and Compounds,2007,429(1-2):204. |
| [8] | Marques M T;Livramento V;Correia J B et al.[J].Materials Science and Engineering A,2005,399(1-2):382. |
| [9] | 李周,肖柱,郭明星,汪明朴,龚竹青.双熔体混合-快速凝固原位生成TiB2/Cu复合材料的研究[J].材料热处理学报,2006(05):6-9. |
| [10] | Birkholz M.;Albers U.;Jung T. .Nanocomposite layers of ceramic oxides and metals prepared by reactive gas-flow sputtering[J].Surface & Coatings Technology,2004(2/3):279-285. |
| [11] | Jie L;Yang Y;Li X C .[J].Materials Science and Engineering A,2004,386:284. |
| [12] | 周衡志,李子全,陈建康,胡孝昀.纳米CeO2p/Zn-4.5%Al复合材料的高能超声制备及其力学性能[J].中国有色金属学报,2007(05):757-762. |
| [13] | 张春华,杨洪刚,张松,张希川,朱圣龙,王福会.氧化铈对搪瓷涂层组织及摩擦磨损性能的影响[J].摩擦学学报,2005(03):198-202. |
| [14] | 骆心怡;左敦稳;王珉 et al.[J].中国有色金属学报,2005,15(z3):203. |
| [15] | 朱利敏,彭晓.CeO2改性的渗铬涂层及氧化性能研究[J].腐蚀科学与防护技术,2005(02):63-68. |
| [16] | 周衡志,李子全,胡孝昀,沈凯,王立.表面包覆改性对纳米CeO2分散性的影响[J].中国稀土学报,2007(03):355-359. |
| [17] | 周衡志 .Thesis for Doctorate[D].Nanjing:Nanjing University of Aeronautics & Astronautics,2008. |
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