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離子掩蔽劑在制備銅銀雙金屬粉中的應(yīng)用
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貴州省自然科學(xué)基金(黔科合J字[2009]2026號)；貴州省高層次人才特助經(jīng)費項目(TZJF-2007-57)


Ionic Masking Agent in the Preparation of Copper-Silver Bimetallic Powder
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    摘要:

    采用化學(xué)置換法制備了系列銅銀雙金屬粉，在制備過程中添加離子掩蔽劑，有效消除了銅氨絡(luò)合離子在銅粉表面的吸附，實現(xiàn)銀在銅粉表面的連續(xù)包覆。分析了掩蔽原理及其主要影響因素，并用透射電子顯微鏡，熱重分析儀，X射線衍射儀對銅銀雙金屬粉進行了表征。結(jié)果表明：在添加了離子掩蔽劑后制備銅銀雙金屬粉末為連續(xù)包覆型結(jié)構(gòu)，分散性好，有效改善了銅粉的抗氧化性能

    Abstract:

    A series of copper-silver bimetallic powder was prepared by a chemical replacement method. In this process, ionic masking agent was added to eliminate copper ammonia complex ions adsorption on copper powder surface, which realizes silver continuous coating on the copper powder surfaces. The masking mechanism and the main influencing factors were analyzed. Besides that, TEM, TGA and XRD were used to characterize the Cu-Ag bimetallic powder. Results show that the copper-silver bimetallic powder with the ionic masking agent is of a continuous coating type structure, which has good dispersity, effectively improving antioxidation properties of the copper powder.

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彭 優(yōu),聶登攀,薛 濤.離子掩蔽劑在制備銅銀雙金屬粉中的應(yīng)用[J].稀有金屬材料與工程,2011,40(7):1251~1255.[Peng You, Nie Dengpan, Xue Tao. Ionic Masking Agent in the Preparation of Copper-Silver Bimetallic Powder[J]. Rare Metal Materials and Engineering,2011,40(7):1251~1255.]
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  • 收稿日期:2010-07-05
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