Characterization of electrodeposited elemental boron

Jain, Ashish; Anthonysamy, S.; Ananthasivan, K.; Ranganathan, Radha; Mittal, Vinit K.; Narasimhan, S.V.; Rao, P. R. Vasudeva

doi:10.1016/j.matchar.2007.07.008

Cited by 34 publications

(18 citation statements)

References 10 publications

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“…Electrolytic boron from fused salt electrolysis is used in making Boron carbide for control rods for nuclear reactors. A 95 to 99% pure boron is known to be made by electrowinning from potassium fluoroborate dissolved in a mixture of molten potassium fluoride and potassium chloride for this purpose [14].…”

Section: Thermal Decomposition Of Boron Compoundsmentioning

confidence: 99%

Elemental Boron and Magnesium Boride Synthesis

Neelameggham¹

2012

Journal for Manufacturing Science &Amp; Production

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The synthesis of pure elemental boron has been elusive for over two centuries. The recent understanding of magnesium boride as a superconductor at 39 K has brought about the need for understanding the causes of the difficulty in preparing elemental boron and magnesium boride therefrom. This review article discusses some of the reasons for the difficulties in the chemical synthesis as well as the physics involved in these. Some of the hypothesis outlined in this paper may shed light into better synthetic methods.

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Section: Thermal Decomposition Of Boron Compoundsmentioning

confidence: 99%

Elemental Boron and Magnesium Boride Synthesis

Neelameggham¹

2012

Journal for Manufacturing Science &Amp; Production

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“…Stern ve McKenna yaptığı bir çalışmada, erimiş tuz elektrolizi sisteminde bor karbürden elementel bor üretilmiştir [10]. Jain ve arkadaşlarının yapmış olduğu çalışmada elementel bor elektro kazanım yoluyla potasyum floroboratın erimiş potasyum florür ve potasyum klorür içinde çözündürülmesi ile elde edilmiştir [11]. Bu yöntemler arasında henüz çokça çalışılmamış ve geliştirilmeyi bekleyen yöntem ise mekanokimyasal yöntemdir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Mekanoki̇myasal Yöntemle Bor Oksi̇tten Elementel Bor Sentezlenmesi̇ Ve Karakteri̇zasyonu

Gokdai

Gürü

Toğrul

2016

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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ÖZETBu çalışmada, susuz bor oksitten yola çıkarak katma değeri yüksek bor uç ürünlerinden biri olan elementel borun mekanokimyasal yöntem ile sentezi ve karakterizasyonu gerçekleştirilmiştir. İndirgeme işleminde metalik halde Mg tozu kullanılmıştır. Farklı öğütme sürelerinde ve farklı tepkime oranlarında bor oksit ve magnezyum, inert atmosferde ve oda sıcaklığında öğütülmüştür. Öğütülen toza fırında ısıl işlem uygulanmıştır. Sentezlenen tozun karakterizasyonu, X-ışını kırınımı (XRD), taramalı elektron mikroskobu (SEM), enerji dağılım spektrofotometresi (EDS) ve yaş analiz yöntemleri ile gerçekleştirilmiştir. XRD analizine göre 1/3,3 toz bilya ağırlık oranında ve 600 dakika öğütme sonucunda elde edilen üründe elementel bor fazına rastlanmıştır. Yapılan seçici çözelti saflaştırma işlemlerinden sonra XRD, EDS ve yaş analiz sonuçları safsızlıkların dikkate değer ölçüde giderildiğini göstermiştir. Yaş analiz yöntemi ile borun safiyeti %95 olarak belirlenmiştir.Anahtar Kelimeler: Bor oksit, elementel bor, liç, mekanokimyasal sentez SYNTHESIS AND CHARACTERIZATION OF ELEMENTAL BORON FROM BORON OXIDE BY MECHANOCHEMICAL METHOD ABSTRACTIn this study, synthesis and characterization of elemental boron which is one of the high valuable boron-end products were carried out by mechanochemical method starting from anhydrous boron oxide. Metalic magnesium powder was used in the reducing process. Boron oxide and magnesium which has different grinding times and different ratios of reactant was ground at inert atmosphere and room temperature. The milled powder was applied to the heat treatment in an oven. Characterization of the synthesized powder was carried out by XRay Diffractometer (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectrometry (EDS) and titration method. According to the XRD analysis, elemental boron phase was observed in an obtained product as a result of 1/3.3 powder to ball weight ratio milled 600 minutes. After the leaching purification process the results of XRD, EDS and titration analysis have shown that impurities was removed at significant rate. Purity of elemental boron has been determined as 95% by titration method.

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“…A high temperature (1073 K) molten salt electrolysis process was developed for the synthesis of high purity boron [3 -5] suitable for control rod application in fast reactors. The electrolyte employed is a melt comprising KCl (72.96 mol %), KBF 4 (11.04 mol %) and KF (16 mol %) [3]. In order to have a more fundamental insight into the process with different melt compositions, a detailed experimental programme is currently being pursued at the Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, India.…”

Section: Introductionmentioning

confidence: 99%

Insights into the Electrochemistry of Deposition of Boron from KCl-KF-NaBF4 Melt

Pal¹,

Anthonysamy²

2015

Port. Electrochim. Acta

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Electrochemical reduction of boron from boron containing fluoroborate species present in KCl (81.54 mol%)-KF (18.45 mol%)-NaBF 4 (1.67x10 -4 mol cm -4 ) melt on a platinum electrode was studied by cyclic voltammetry and chronoamperometry. These studies were carried out over the temperature range 1073 -1123 K. Boron-containing electroactive species is shown to reduce quasi-reversibly at low scan rates (ν < 0.1 Vs -1 ) and irreversibly at higher scan rates (> 0.1 V s -1 ) through a single-step three-electron process (B(III) + 3e → B). The transfer and diffusion coefficients of the electroactive species was measured for sodium fluoroborate in KCl-KF melt over the temperature range 1073-1123 K.

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Characterization of electrodeposited elemental boron

Cited by 34 publications

References 10 publications

Elemental Boron and Magnesium Boride Synthesis

Elemental Boron and Magnesium Boride Synthesis

Mekanoki̇myasal Yöntemle Bor Oksi̇tten Elementel Bor Sentezlenmesi̇ Ve Karakteri̇zasyonu

Insights into the Electrochemistry of Deposition of Boron from KCl-KF-NaBF4 Melt

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