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Al86Fe10Zr4非晶合金的晶化與腐蝕行為研究
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國家自然科學(xué)基金（50371072）；湖南省杰出中青年基金（02JJYB010）；湖南省科技計(jì)劃項(xiàng)目（2008FJ3052）


Crystallization and Corrosion Resistance of Al86Fe10Zr4 Amorphous Ribbons
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    摘要:

    利用甩帶法制備出Al86Fe10Zr4非晶薄帶，用X射線衍射儀和差示掃描量熱計(jì)對(duì)該非晶的非晶特性及晶化過程進(jìn)行了研究。結(jié)果表明，Al86Fe10Zr4非晶薄帶的晶化過程為兩步晶化，其晶化溫度分別約為603和718 K。用Kissinger法得到了合金兩步晶化過程的激活能分別為273和239 kJ/mol。對(duì)該非晶薄帶及其不同晶化程度的試樣在0.01 mol·L-1 NaCl，pH=12堿性溶液中的室溫電化學(xué)腐蝕性能的研究結(jié)果表明，部分晶化態(tài)試樣表現(xiàn)出比非晶態(tài)試樣更佳的耐蝕性能，而完全晶化態(tài)試樣的耐蝕性能明顯降低。

    Abstract:

    Al86Fe10Zr4 amorphous ribbons were prepared by melt spinning. The amorphous characteristics and crystallization behavior of the amorphous ribbons was investigated by means of X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results show that the as-spun ribbons are in fully amorphous state. The DSC trace reveals that two-step crystallization occurs in the amorphous ribbon during the heating scanning, and the onset temperatures of the first and the second crystallization are about 603 and 718 K, respectively. The activation energies for the two-step crystallization are 273 and 239 kJ/mol, respectively. Furthermore, the effect of crystallization on the electrochemical properties was examined. The results indicate that the partially crystallized ribbon exhibits better corrosion resistance than that of the fully amorphous ribbon, while the fully crystallization deteriorates the corrosion resistance of the amorphous ribbon.

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王文武,林建國,馬 驀,徐 杰,尹 勝,吳學(xué)慶. Al86Fe10Zr4非晶合金的晶化與腐蝕行為研究[J].稀有金屬材料與工程,2011,40(2):251~254.[Wang Wenwu, Lin Jianguo, Ma Mo, Xu Jie, Yin Sheng, Wu Xueqing. Crystallization and Corrosion Resistance of Al86Fe10Zr4 Amorphous Ribbons[J]. Rare Metal Materials and Engineering,2011,40(2):251~254.]
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  • 收稿日期:2010-03-01
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