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硼對低鈷AB5型貯氫合金循環(huán)壽命的影響
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TG139.7

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國家自然科學(xué)基金重點項目(50131040),國家自然科學(xué)基金項目(50071050)


Effect of Boron Additive on the Cycle Life of Low-Co AB5-Type Hydrogen Storage Alloy
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    摘要:

    為了提高低鈷AB5型貯氫合金的電化學(xué)循環(huán)穩(wěn)定性,在低鈷AB5型貯氫合金中加入微量的硼,用真空快淬工藝制備了稀土系低鈷AB5型MmNi3.8Co0.4Mn0.6Al0.2Bx(x=0,0.1,0.2,0.3,0.4)貯氫合金,分析測試了鑄態(tài)及快淬態(tài)合金的電化學(xué)性能及微觀結(jié)構(gòu),研究了硼對鑄態(tài)及快淬態(tài)合金微觀結(jié)構(gòu)及循環(huán)壽命的影響。結(jié)果表明,硼能大幅度提高鑄態(tài)及快淬態(tài)低鈷AB5型貯氫合金的電化學(xué)循環(huán)穩(wěn)定性,但其作用機理是完全不同的。

    Abstract:

    In order to modify its cycle stability, a trace amount of boron was added in low-Co AB5-type hydrogen storage alloy. The low-Co AB5-type MmNi3.8Co0.4Mn0.6Al0.2B(x=0, 0.1, 0.2, 0.3, 0.4)hydrogen storage alloys were prepared by cast and rapid quenching. The x microstructures and electrochemical performances of the as-cast and quenched alloys were analyzed and measured. The effect of boron additive on the microstructures and cycle lives of the alloys were investigated comprehensively. The experimental results show that the addition of boron dramatically enhances the cycle lives of the as-cast and quenched low-Co AB5-type hydrogen storage alloys, whereas the action mechanism of boron is completely different.

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張羊換 陳梅艷 王新林 王國清 祁焱 郭世海.硼對低鈷AB5型貯氫合金循環(huán)壽命的影響[J].稀有金屬材料與工程,2005,34(2):212~216.[Zhang Yanghuan, Chen Meiyan, Wang Xinlin, Wang Guoqing, Qi Yan, Guo Shihai . Effect of Boron Additive on the Cycle Life of Low-Co AB5-Type Hydrogen Storage Alloy[J]. Rare Metal Materials and Engineering,2005,34(2):212~216.]
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  • 最后修改日期:2003-08-06
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