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添加納米TiO2的Ni-P化學(xué)復(fù)合鍍層顯微結(jié)構(gòu)與性能
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四川省特種材料及制備技術(shù)重點(diǎn)實(shí)驗(yàn)室開放基金（szjj2011-013）


Microstructure and Properties of Ni-P Electroless Composite Coating Added with Nano-TiO2
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    摘要:

    采用化學(xué)復(fù)合鍍法制備了Ni-P-納米TiO2復(fù)合鍍層，研究了納米TiO2添加對(duì)Ni-P復(fù)合鍍層的顯微結(jié)構(gòu)、硬度、耐磨性、孔隙率及耐蝕性的影響，并討論了其影響機(jī)理。結(jié)果表明：納米TiO2粒子較為均勻地分布在Ni基鍍層，未發(fā)生明顯團(tuán)聚；納米TiO2粒子的彌散強(qiáng)化作用，使復(fù)合鍍層具有較高的表面硬度和良好的耐摩擦性能，晶化熱處理后的復(fù)合鍍層表面硬度達(dá)到了10 925 MPa，耐摩擦性能也顯著提高。添加納米TiO2粒子后，鍍層的孔隙率增加，耐堿和耐鹽腐蝕的能力稍有降低，耐HCl溶液腐蝕的能力較差。

    Abstract:

    Ni-P-(nano)TiO2 composite coating was prepared by electroless composite plating. The effects of nano-TiO2 addition on microstructure, hardness, wear resistance, porosity and corrosion resistance of Ni-P composite coating were investigated and the mechanism was discussed. The results show that TiO2 nanoparticles are homogeneously distributed in the Ni based coatings, without apparent aggregation. The dispersion strengthening effect of the nano-TiO2 particles leads to high hardness and good wear resistance of the composite coating. The surface hardness of the crystallized composite coating can reach 10925 MPa and the wear resistance increases greatly. However, nano-TiO2 particles addition increases the porosity of the coating, decreases the corrosion resistance to NaOH and NaCl solution slightly, and the corrosion resistance to HCl becomes poor.

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袁 強(qiáng),周淑容,鄭 浩,梁小燕,查五生.添加納米TiO2的Ni-P化學(xué)復(fù)合鍍層顯微結(jié)構(gòu)與性能[J].稀有金屬材料與工程,2014,43(6):1483~1486.[Yuan Qiang, Zhou Shurong, Zheng Hao, Liang Xiaoyan, Zha Wusheng. Microstructure and Properties of Ni-P Electroless Composite Coating Added with Nano-TiO2[J]. Rare Metal Materials and Engineering,2014,43(6):1483~1486.]
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  • 收稿日期:2013-06-21
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  • 在線發(fā)布日期: 2014-11-13
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