Diffusion and surface alloying of gradient nanostructured metals

• Zhenbo Wang and
• Ke Lu

Beilstein J. Nanotechnol. 2017, 8, 547–560, doi:10.3762/bjnano.8.59

• inert gas condensation and consolidation (IGC). Since then, studies have been performed to reveal the diffusion behavior of nanostructured metals worldwide. However, the measured results were rather scattered and even controversial. For instance, markedly promoted diffusion coefficients with a lower

• be reviewed and compared with results from other nanostructured metals in this section. Diffusion behavior in nanostructured surface layers The diffusion properties of Cr in GNS Fe were measured within the temperature range of 300–380 °C on a SMAT Fe sample with a mean grain size of ≈10 nm in the top

• or SPD reach a value of 103–105 times higher than those for GBs in CG samples. The diffusivity increment is typically within 102–104 in nanostructured metals produced via the IGC or BMS techniques. Additionally, the interfacial diffusivity in nanostructured samples produced via CRY is much lower than

Effect of triple junctions on deformation twinning in a nanostructured Cu–Zn alloy: A statistical study using transmission Kikuchi diffraction

• Silu Liu,
• Xiaolong Ma,
• Lingzhen Li,
• Liwen Zhang,
• Patrick W. Trimby,
• Xiaozhou Liao,
• Yusheng Li,
• Yonghao Zhao and
• Yuntian Zhu

Beilstein J. Nanotechnol. 2016, 7, 1501–1506, doi:10.3762/bjnano.7.143

• mechanisms that can simultaneously improve both strength and ductility [5][6][9][10][11]. Consequently, deformation twinning in nanostructured metals has received extensive attention in recent years [10]. Among all of the twinning mechanisms in nanocrystalline materials, partial mission from grain boundaries

• junctions and twin boundaries without them being edge-on. This makes it more suitable than HRTEM for studying triple junction/twinning relationships. Based on the statistical data, it is reasonable to state that triple junctions in nanostructured metals could play a significant role in the nucleation of

In situ characterization of hydrogen absorption in nanoporous palladium produced by dealloying

• Eva-Maria Steyskal,
• Christopher Wiednig,
• Norbert Enzinger and
• Roland Würschum

Beilstein J. Nanotechnol. 2016, 7, 1197–1201, doi:10.3762/bjnano.7.110

• and catalysis [2]. One attractive method to produce nanostructured metals with macroscopic dimensions is dealloying, an (electro-)chemical process, which removes the less noble component from an alloy by selective etching [3]. Nanoporous palladium (np-Pd) produced by free corrosion [4] as well as

Deformation-induced grain growth and twinning in nanocrystalline palladium thin films

• Aaron Kobler,
• Jochen Lohmiller,
• Jonathan Schäfer,
• Michael Kerber,
• Anna Castrup,
• Ankush Kashiwar,
• Patric A. Gruber,
• Karsten Albe,
• Horst Hahn and
• Christian Kübel

Beilstein J. Nanotechnol. 2013, 4, 554–566, doi:10.3762/bjnano.4.64

• , SXRD) experiments. Keywords: ACOM-TEM; deformation mechanism; nanostructured metals; tensile testing; XRD; Introduction Nanocrystalline (nc) metals and alloys exhibit different mechanical behavior compared to their coarse-grained counterparts [1]. They show extraordinary strength but often lack

Nanostructure-directed chemical sensing: The IHSAB principle and the dynamics of acid/base-interface interaction

• James L. Gole and
• William Laminack

Beilstein J. Nanotechnol. 2013, 4, 20–31, doi:10.3762/bjnano.4.3

• used as a basis to develop selectivity. Results obtained with nanostructured deposits generated from electroless gold, tin, nickel and copper, as well as nanotitania are considered in this study. With the exception of the gold depositions, all of the nanostructured metals deposited to the PS surface