Atomically Localized Ordered Phase and Segregation at Grain Boundaries in Au–Ag–Cu Ternary Alloy Nanoparticles

A superoxide anion radical (O[Formula: see text] nonenzymatic electrochemical sensor based on PtRuCu ternary alloy nanoparticles/electrochemically reduced graphene oxide (ERGO) composite modified glassy carbon electrode (PtRuCu/ERGO/GCE) was developed. ERGO and PtRuCu/ERGO composites were characterized by scanning electron microscopy. The prepared PtRuCu/ERGO/GCE showed remarkable performance toward the electrocatalytic reduction of (O[Formula: see text]. The sensor possessed a high sensitivity of 1725[Formula: see text]A[Formula: see text][Formula: see text][Formula: see text]mM[Formula: see text][Formula: see text]cm[Formula: see text], a wide linear range of 7.5–330[Formula: see text][Formula: see text]M ([Formula: see text]0.993) and a low detection limit of 0.7[Formula: see text][Formula: see text]M ([Formula: see text]/[Formula: see text]), as well as excellent selectivity, reproducibility and stability, which can be attributed to the synergistic effect of ERGO and PtRuCu ternary alloy nanoparticles. Therefore, the prepared sensor is promising for electrochemical determination of O[Formula: see text].

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Nanocomposites based on quasi-networked Au1.5Pt1Co1 ternary alloy nanoparticles and decorated with poly-L-cysteine film for the electrocatalytic application of hydroquinone sensing

Ecotoxicology and Environmental Safety ◽

10.1016/j.ecoenv.2020.111251 ◽

2021 ◽

Vol 207 ◽

pp. 111251

Author(s):

Bo Zhang ◽

Nana She ◽

Jing Du ◽

Meng Zhang ◽

Guozhen Fang ◽

...

Keyword(s):

Ternary Alloy ◽

Alloy Nanoparticles

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Effect of hafnium addition on a Ni-Al-Co Alloy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100177830 ◽

1990 ◽

Vol 48 (4) ◽

pp. 940-941

Author(s):

L. S. Lin ◽

G. W. Levan ◽

S. M. Russell ◽

C. C. Law

Keyword(s):

Mechanical Properties ◽

Grain Size ◽

Yield Strength ◽

Grain Boundaries ◽

Ternary Alloy ◽

Room Temperature ◽

Gamma Prime ◽

Room Temperature Ductility ◽

Appreciable Increase ◽

Hf Addition

Recent efforts at P&W have shown that the addition of cobalt to binary NiAl results in an appreciable increase in room temperature ductility. One version of this ternary alloy, designated VIM A, has a composition of Ni-30 at.% Al-35 at.% Co. The addition of 0.5 at.% Hf to this alloy (designated VIM AH) results in an improvement in yield strength at 760°C. Room temperature properties were not found to be significantly affected by the Hf addition. This discussion will focus on the microstructures of alloys VIM A and VIM AH and their relationship to the mechanical properties observed in compression at room temperature and 760°C.The addition of hafnium reduced the grain size of VIM AH alloy. After room temperature compression, both alloys show an ordered bcc (B2) matrix and precipitates which are distributed primarily along grain boundaries. These precipitates were identified by microdiffraction to be ordered fcc (L12) gamma prime for VIM A and hexagonal (A3) for VIM AH.

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