Crack Mitigation during Dealloying of Au25Cu75

IMR OpenIR

	Crack Mitigation during Dealloying of Au25Cu75
	Y. Zhong; J. Markmann; H. J. Jin; Y. Ivanisenko; L. Kurmanaeva; J. Weissmuller
	2014
发表期刊	Advanced Engineering Materials
ISSN	1438-1656
卷号	16 期号:4 页码:389-398
摘要	The suggested use of nanoporous gold for functional and structural applications requires uniform and specifically crack-free monolithic bodies, ideally with a structure size in the range of 10nm or below. Here we investigate electrochemical dealloying of two different starting alloys, Au25Ag75 and Au25Cu75, as pathways towards that goal. With an emphasis on the processes that lead to crack formation, we discuss the role of the parameters (i) lattice parameter change, (ii) dealloying potential and rate, and (iii) thermo-mechanical treatment of the master alloys. The Cu-based alloys are found to give superior homogeneity at very small structure sizes, provided that intermediate temperature treatments are avoided. A complete suppression of crack formation was achieved by application of a dealloying potential of 1.1V versus Ag/AgCl, at a ligament size of 11nm.
部门归属	[zhong, yi ; markmann, juergen ; weissmueller, joerg] helmholtz zentrum geesthacht, inst werkstoffforsch, d-21502 geesthacht, germany. [markmann, juergen ; weissmueller, joerg] tech univ hamburg, inst werkstoffphys & werkstofftechnol, d-21073 hamburg, germany. [jin, hai-jun] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [ivanisenko, yulia] karlsruher inst technol, inst nanotechnol, karlsruhe, germany. [kurmanaeva, lilia] univ calif davis, dept chem engn & mat sci, davis, ca 95616 usa. ; zhong, y (reprint author), helmholtz zentrum geesthacht, inst werkstoffforsch, d-21502 geesthacht, germany. ; juergen.markmann@hzg.de
关键词	Severe Plastic-deformation Selective Dissolution Porosity Evolution Nanoporous Metals Gold Alloy Au Corrosion Behavior Stress Copper
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72981
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Zhong,J. Markmann,H. J. Jin,et al. Crack Mitigation during Dealloying of Au25Cu75[J]. Advanced Engineering Materials,2014,16(4):389-398.
APA	Y. Zhong,J. Markmann,H. J. Jin,Y. Ivanisenko,L. Kurmanaeva,&J. Weissmuller.(2014).Crack Mitigation during Dealloying of Au25Cu75.Advanced Engineering Materials,16(4),389-398.
MLA	Y. Zhong,et al."Crack Mitigation during Dealloying of Au25Cu75".Advanced Engineering Materials 16.4(2014):389-398.