The high temperature corrosion behavior of sputtered nanocrystalline K38 coating with and without yttrium addition under mixed molten salt film in air was investigated. Accelerated corrosion occurred on the coating without yttrium (Y) addition locally after 60 h exposure at 900 °C, which resulted in negative weight gain in kinetics. A uniform and protective alumina scale formed on surface of th...

Internal radioembolization with yttrium-90 is a promising treatment method, predominantly for liver tumors. However, the shifting of yttrium-90-loaded spherules into the arteries and veins that supply the duodenum and stomach, leading to ulceration, hemorrhage, perforation, and outlet obstruction of these organs, is one of the major undesirable consequences of this technique. We report a case o...

X-ray photoelectron spectroscopy (XPS) and medium energy ion scattering (MEIS) are used to determine chemical bonding and composition of ultra-thin films of mixed yttrium, silicon, and oxygen, formed by oxidation of metal on clean and pre-treated silicon. XPS and MEIS analyses indicate that oxidation of yttrium on bare silicon results in a fully oxidized film with a significant fraction of Y-O-...

Ferroelectric Scintillators In article number 2102848, Li-Zhuang Chen, Yi Zhang, and co-workers present a series of metal halide compounds [RQ]2MnBr4 (R = H, methyl, ethyl, fluoroethyl, Q quinuclidine). The precisely designed modulation towards cations not only arouses the satisfactory ferroelectricity [FEtQ]2MnBr4, but also drastically enhances photoluminescence quantum yield from 38.7% to 83....

The preparation of yttrium metal by the reduction of yttrium trifluoride with calcium is described. Alternate methods employing the formation of a low melting Y-Zn or Y-Mg intermediate alloy are evaluated and data on chemical and microscopic purity of the resulting metal are presented.

The first structurally authenticated yttrium-alkyl-alkylidene is reported; structural, spectroscopic, and theoretical analyses show that whilst the yttrium-alkylidene bond is short, it possesses a bond order less than one and is comparable to the Y-C(alkyl) single bond within the same molecule.

To investigate the influence of heavy rare earth element yttrium on type, morphology, and quantity distribution inclusions in grain-oriented silicon steel, thermodynamic calculation was carried out typical steel containing yttrium. The main experimental steels with without were observed analyzed using field emission scanning electron microscope (FESEM, Zeiss Gemini SEM 300) energy dispersive sp...

2014 The density of states of yttrium compounds YM2 (M = Fe, Co, Ni) is calculated within a tightbinding scheme. Using the Stoner model, conclusions are drawn about their magnetic and electronic properties. In YCo2, we show that one has to introduce paramagnon effects in order to explain the electronic properties. The additional d-f interaction introduced by rare-earth atoms (R) in RM2 is treat...

This paper presents a detailed investigation of FeCr-based quaternary Heusler alloys. By using ultrasoft pseudopotential, electronic and magnetic properties the compounds are studied within framework Density Functional Theory (DFT) by Quantum Espresso package. The thermodynamic, mechanical, dynamical stability is established through comprehensive study different mechanical parameters phonon dis...