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Chromium - Zenodo

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Last Updated: 17 August 2022

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Complex-as-Ligand Strategy as a Tool for the Design of a Binuclear Nonsymmetrical Chromium(III) Assembly: Near-Infrared Double Emission and Intramolecular Energy Transfer

. " The chromium polypyridyl complexes are appealing for their long-lived near-infrared emission reaching the millisecond range and for the solid circularly polarized luminescence of their isolated enantiomers. Even the preparation and examination of most standard nonsymmetrical CrIII dyads showing directional intramolecular intermetallic energy transfer continue to be untouched. The resulting [2 CrCr] 6+ dyad shows twin long-lived NIR emission and a directional intermetallic energy transfer that is controlled by the specific plans of the different coordination spheres. ".

Source link: https://zenodo.org/record/6992998


Electrochemical removal of hexavalent chromium by electrocoagulation

. " Chromium in wastewater is released from tannery, electroplating, steel finishing, dying industry and many other sectors. There are several therapies for the removal of chromium from wastewater, however the most common technique includes reduction to its less hazardous trivalent state. In this paper electrocoagulation was used as treatment for removing of hexavalent chromium from artificial prepared wastewater preliminary focus 50 mg/L, in presence of sodium chloride as supporting electrolyte. It was analyzed the effect of electrode materials and current thickness on Cr elimination performance. The evaluation showed that iron has higher elimination effectiveness compared to aluminium. ".

Source link: https://zenodo.org/record/6918321


Fabrication of macrocrack-free thick chromium duplex plating for remanufacturing applications

. " That is due to the fact that remanufactured elements can have the same product quality as new elements with a more affordable price. Difficult chromium electrodeposition is a widely known technique to provide a protective covering for the cylinder rod so that it has desirable wear and deterioration resistance properties. Linked with remanufacturing applications, the used chromium plating covering the cyndrical tube pole ought to be gotten rid of first before applying the new chromium one. The primary issue is that the thick chromium may experience macrocrack after the baking process at 200 \ u00b0C. A conventional single-layer chromium deposit with a plating current thickness more than 40 A/dm 2 reveals macrocracks after the baking process at 200 \ u00b0C for a hr. The as-baked duplex chromium layering composed of a sleek Cr-C layer and a Cr layer has a microcrack thickness of 337 \ u00b18 cracks/cm and hardness of 924. 8 \ u00b122. 2 HV 0. 3 without macrocracks. ".

Source link: https://zenodo.org/record/6862317

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions