摘要
采用去合金化法制备多孔银,研究了浓盐酸浸泡处理对多孔结构的影响,利用纳米压痕技术测试多孔银的硬度并研究其与多孔结构的关系.结果表明:多孔银的孔壁尺寸随浸泡时间增长而增大,孔隙度随浸泡时间增长而减小,硬度随孔隙度的增大而增大,多孔银孔壁的屈服强度远高于多晶银.
Porous Ag was fabricated by dealloying an extruded Ag25 Zn75 sheet, and the effects of acid treatments on the porous structure and the relationship between porous structure and hardness obtained by nano-indenta- tion tests were investigated. An increasing in the acid treatment time results in an increasing in ligament size. Hardness is increased with the increasing porosity. The yield strength of the.nanosized Ag ligament is much higher than that of bulk polycrystalline Ag.
出处
《大连交通大学学报》
CAS
2010年第3期67-70,共4页
Journal of Dalian Jiaotong University
基金
教育部高校博士点基金资助项目
辽宁省教育厅优秀人才资助项目(RC-15)
关键词
去合金化
纳米压痕
多孔银
屈服强度
dealloying
nano-indentation
porous Ag
yield strength
