Unprecedented ω single-phase nanocrystalline Ti-Fe alloy prepared by laser-inert gas condensation

2021 ◽  
pp. 111238
Author(s):  
Shangshu Wu ◽  
Zongde Kou ◽  
Junjie Wang ◽  
Mengyang Yan ◽  
Shu Fu ◽  
...  
2010 ◽  
Vol 10 (5) ◽  
pp. 3667-3670 ◽  
Author(s):  
Il-Suk Kang ◽  
Hyun-Sang Seo ◽  
Deuk-Han Kim ◽  
Taek-Yeong Lee ◽  
Jun-Mo Yang ◽  
...  

1981 ◽  
Vol 106 (1-3) ◽  
pp. A170
Author(s):  
J. Mühlbach ◽  
E. Recknagel ◽  
K. Sattler

ACS Nano ◽  
2016 ◽  
Vol 10 (4) ◽  
pp. 4684-4694 ◽  
Author(s):  
Junlei Zhao ◽  
Ekaterina Baibuz ◽  
Jerome Vernieres ◽  
Panagiotis Grammatikopoulos ◽  
Ville Jansson ◽  
...  

2006 ◽  
Vol 20 (01) ◽  
pp. 37-47
Author(s):  
LUBNA RAFIQ SHAH ◽  
BAKHTYAR ALI ◽  
S. K. HASANAIN ◽  
A. MUMTAZ ◽  
C. BAKER ◽  
...  

We present magnetic measurements on iron ( Fe ) nanoparticles in the size range 10–30 nm produced by the Inert Gas Condensation process (IGC). Structural characterization studies show the presence of a core/shell structure, where the core is bcc Fe while the surface layer is Fe -oxide. Analysis of the magnetic measurements shows that the nanoparticles display very large uniaxial anisotropy, K eff ≈3 - 4 × 106 erg/cc. The observed room temperature coercivities lie in the range ≈600 – 973 Oe , much larger than those expected from the Stoner–Wohlfarth model using the bulk iron anisotropy. It can be inferred from the coercivity variation with the particle size that there is a general trend of the coercivity increasing with size, culminating finally in a decrease for high sizes (30 nm) possibly due to the onset of non-coherent magnetization reversal processes.


2019 ◽  
Vol 79 ◽  
pp. 02002
Author(s):  
Shangshu Wu ◽  
Zhou Yu ◽  
Junjie Wang ◽  
Hanxin Zhang ◽  
Chaoqun Pei ◽  
...  

The preparation of nanocrystalline aluminum (NC Al) was conducted in two steps. After the NC Al powder was synthesized by an Inert gas condensation (IGC) method in a helium atmosphere of 500 Pa, the NC Al powder was in-situ compacted into a pellet with a 10 mm diameter and 250 μm-300 μm thickness in a high vacuum (10-6 Pa-10-7 Pa) at room temperature. The NC Al samples were not exposed to air during the entire process. After the pressure reached 6 GPa, the relative density could reach 99.83%. The results showed that the grain size decreased with the increased of in-situ forming pressure. The NC Al samples present obvious ductile fracture, and the tensile properties were greatly changed with the increase of forming pressure.


2015 ◽  
Vol 151 ◽  
pp. 275-281 ◽  
Author(s):  
Maria Benelmekki ◽  
Jerome Vernieres ◽  
Jeong-Hwan Kim ◽  
Rosa-E. Diaz ◽  
Panagiotis Grammatikopoulos ◽  
...  

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