Influence of in situ synthesized TiC on thermal stability and corrosion behavior of Zr₆₀Cu₁₀Al₁₅Ni₁₅ amorphous composites

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• 作者：Jiwei Geng ; Xinying Teng ; Guorong Zhou ; Jinfeng Leng ; Degang Zhao
• 关键词：Amorphous composites ; In situ synthesized TiC ; Thermal stability ; Electrochemical corrosion
• 刊名：Physica B
• 出版年：1 March, 2014
• 年：2014
• 卷：436
• 期：Complete
• 页码：47-53
• 全文大小：2724 K

文摘

In situ synthesized TiC particles were prepared by a thermal explosion method. Adding 鈥渋n situ synthesized鈥?TiC into Zr₆₀Cu₁₀Al₁₅Ni₁₅ glass matrix to obtain amorphous matrix composites was achieved. The corrosion behavior of Zr₆₀Cu₁₀Al₁₅Ni₁₅ amorphous composites was evaluated using potentiodynamic polarization measurements in 3.5 wt% NaCl solution at room temperature. The results show that the microhardness and thermal stability are improved apparently, while the TiC (鈮?.6 wt%) does not significantly affect the supercooled liquid behavior. Moreover, the corrosion resistance is improved apparently because the nanocrystals accelerate the diffusion of passive elements for faster formation of the protective passive film at nanocrystals/amorphous interfaces. However, when the TiC content is more than 0.6 wt%, both glass forming ability and corrosion resistance are reduced significantly.