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Kristalin metal borür tozları inorganik ergimiş tuz ortamında düşük sıcaklık yöntemi ile sentezlenmiş, ikili ve üçlü metal borür kompozit tozlarının eldesi susuz metal klorürler ve sodyum borhidrür toz karışımları kullanılarak incelenmiştir. Reaksiyonlar, argon altında dikey bir tüp fırında silika tüp içine yerleştirilmiş alüminyum pota içinde gerçekleştirilmiştir. Reaksiyon sonunda elde edilen toz karışımına sıcak su ile liç işlemi yapılarak istenmeyen klorür fazları giderilmiştir. Seçilen bazı saf tozlar, kristalin özelliği geliştirmek amacıyla 1100°C’de tavlama işlemine tabi tutulmuştur. Sentezlenen ve tavlanmış tozların karakterizasyonu, X-ışını difraktometresi (XRD), X-ışını floresans spektrometresi (XRF), taramalı elektron mikroskobu (SEM/EDX) ve dinamik ışık saçma tekniği (DLS) kullanılarak analiz edilmiştir. Sonuçlar, inorganik ergimiş tuz tekniğinin (LiCl/KCl ötektik karışımı) CoCl2, NiCl2 ve NaBH4 toz karışımları arasındaki reaksiyon sırasında oluşan fazlar üzerindeki olumlu etkisini ortaya koymuştur. 750-950°C sıcaklıkları arasında gerçekleşen reaksiyonlarda CoB-Ni2B-CoBx, CoB-Ni4B3 ve CoB-NiB-Ni2Co0.67B0.33 fazlarını içeren ikili ve üçlü metal borür tozları nano boyutta elde edilmiştir. Sentezlenen tozların partikül boyutu ortalama 60 nm civarında hesaplanmıştır.
The crystalline metal tube powder is synthesized by the low temperature method in an inorganic drilled salt environment, the double and triple metal tube composite powder is studied by the use of dry metal chlorides and sodium borhydrate powder mixture. The reactions were performed in an aluminum pot placed in a silicone tube in a vertical tube oven under the argon. Unwanted phases of chloride are eliminated by processing the hot water into the powder mixture obtained at the end of the reaction. Some of the chosen pure powder were wrapped at 1100°C in order to improve the characteristics of the crystal. The characterization of synthesized and stained powder has been analyzed using X-ray difraktometry (XRD), X-ray fluorescence spectrometry (XRF), scanned electron microscope (SEM/EDX) and dynamic light foolish technique (DLS). The results showed the positive effect of an inorganic ergeated salt technique (LiCl/KCl ectetic mixture) on the phases that occur during the reaction between CoCl2, NiCl2 and NaBH4 powder mixture. In reactions between temperatures of 750-950 °C, double and triple metal pipe powder containing the phases of CoB-Ni2B-CoBx, CoB-Ni4B3 and CoB-Ni2Co0.67B0.33 was obtained in nano size. The particle size of the synthesized powder is calculated at an average of about 60 nm.
Crystalline metal boride powders were synthesized via low temperature method in inorganic molten salt medium, and binary and ternary metal boride composite powders were investigated using anhydrous metal chlorides and sodium borohydride powder mixtures. The reactions were carried out in an aluminum crucible placed in a silica tube under argon which was put in a vertical tube furnace. At the end of the reaction, the resulting powder mixture was leached with hot water to remove any undesirable chloride phases. In order to improve crystalline properties, some of pure powders were selected and annealed at 1100°C. Characterization of synthesized and annealed powders was carried out using X-ray diffractometer (XRD), X-ray fluorescence spectrometry (XRF), scanning electron microscopy (SEM / EDX) and dynamic light scattering technique (DLS). The results showed the positive effect of inorganic molten salt technique (LiCl/KCl eutectic mixture) on the formation of phases during the reaction between CoCl2, NiCl2 and NaBH4 powder mixtures. Following the reactions at between 750-950 °C, the binary and ternary metal boride powders consisting of CoB-Ni2B-CoBx, CoB-Ni4B3 ve CoB-NiB-Ni2Co0.67B0.33 phases were obtained. The measured particle size of the final particles had an average of 60 nm.
Alan : Fen Bilimleri ve Matematik; Mühendislik; Sağlık Bilimleri
Dergi Türü : Ulusal
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