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Definition of an optimal solutioning treatment for a Ni-based superalloy processed by Additive Manufacturing

The current work aims at defining an optimal recipe for the solution annealing (SA) of a high-fraction γ’ Ni-based superalloy manufactured with Laser Powder Bed Fusion process (PBF-LB/M). The studied alloy is designed for the aeronautical or energy sectors to perform above 800°C. The microstructure obtained from PBF-LB/M process (as-built state) is extremely fine with grains aligned along the building direction, due to the thermal flow during the process. Moreover, due to the fast cooling, th...

A new algorithm for p-adic continued fractions

Continued fractions in the field of p-adic numbers have been recently studied by several authors. It is known that the real continued fraction of a positive quadratic irrational is eventually periodic (Lagrange's Theorem). It is still not known if a p-adic continued fraction algorithm exists that shares a similar property. In this paper we modify and improve one of Browkin's algorithms. This algorithm is considered one of the best at the present time. Our new algorithm shows better properties...

Continued fractions in the field of p-adic numbers

Continued fractions have a long history in number theory, especially in the area of Diophantine approximation. The aim of this expository paper is to survey the main results on the theory of p-adic continued fractions, i.e., continued fractions defined over the field of p-adic numbers Qp, which in the last years has recorded a considerable increase of interest and research activity. We start from the very first definitions up to the most recent developments and open problems.

Cycling performance of SiOx-Si-C composite anode with different blend ratios of PAA-CMC as binder for lithium sulfur batteries

Silicon (Si) -based materials have been identified as a potential alternative anode owing to their superior theoretical capacity compared to conventional graphitic carbon. Nevertheless, the huge volume change (approximately 300%) that occurs while cycling still hampers this system from 100% practical applications. Silicon-monoxide (SiOx)-based anode materials, on the other hand, are being explored extensively due to their unique properties such as high theoretical capacity, formation of Li2O ...

Membrane/electrolyte interplay on ammonia motion inside a flow-cell for electrochemical nitrogen and nitrate reduction

Electrochemical ammonia production from molecular nitrogen and nitrate reduction reactions at ambient conditions has gained a lot of attention in recent years, making this topic more and more appealing. The race towards good and quick results in terms of Faradaic efficiency and productivity is not always focused on the possible source of ammonia contamination. In particular, Nafion membrane is the most commonly used in this field as cell separator, discarding the possible known disadvantages ...

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