Production of boron nitride by carbothermic and mechanochemical methods, and nanotube formation

Camurlu, HE
Aydogdu, A
Topkaya, Yavuz Ali
Sevinc, N
The formation of hexagonal boron nitride by carbothermic reduction of boron oxide and nitridation has been examined. Experiments were conducted in the temperature range of 1100-1500degreesC for durations between 15-240 minutes. Products were examined by X-ray, SEM and chemical analysis. The results showed that the reaction proceeds through a gaseous boron containing species, which is most probably 13203(g). It was found that all of the carbon was consumed and formation of boron nitride was complete in 2 hours at 1500degreesC.


Synthesis of boron nitride nanotubes from ammonia and a powder mixture of boron and iron oxide
Ozmen, Didem; Sezgi, Naime Aslı; BALCI, FATMA SUNA (2013-03-01)
Boron nitride nanotubes (BNNTs) were synthesized from the reaction of ammonia gas with a powder mixture of boron and iron oxide in a tubular reactor connected to a mass spectrometer for the on-line chemical analysis of the reactor outlet stream at different temperatures and inlet gas compositions. XRD results showed that hexagonal and rhombohedral boron nitrides, iron, boron oxide, and iron boride were the solid phases formed in these materials depending on the reaction temperature and gas composition. It w...
Carbothermic production of hexagonal boron nitride
Çamurlu, Hasan Erdem; Sevinç, Naci; Department of Metallurgical and Materials Engineering (2006)
Formation of hexagonal boron nitride (h-BN) by carbothermic reduction of B2O3 under nitrogen atmosphere at 1500oC was investigated. Reaction products were subjected to powder X-ray diffraction analysis, chemical analysis and were examined by SEM. B4C was found to exist in the reaction products of the experiments in which h-BN formation was not complete. One of the aims of this study was to investigate the role of B4C in the carbothermic production of h-BN. For this purpose, conversion reaction of B4C into h...
Bilgin, Nursev; Agartan, Lutfi; PARK, JONGEE; Öztürk, Abdullah (2014-10-16)
Titania (TiO2) nanostructures were produced via hydrothermal method using amorphous TiO2 powders synthesized by the sol-gel precipitation process. The hydrothermal system was isolated from the environment and hydrothermal reactions were allowed to execute at 130 degrees C for 36 h at autogeneous pressure, and at a stirring rate of 250 rpm. Scanning electron microscopy (SEM) analysis revealed that TiO2 nanofibers formed instead of nanotubes upon utilization of amorphous TiO2 precursor. After hydrothermal syn...
Production of boron nitride using chemical vapor deposition method
Mercan, Özge; Özbelge, Önder; Sezgi, Naime Aslı; Department of Chemical Engineering (2014)
Boron nitride is a promising material with its outstanding characteristics like chemical inertness, large band gap, high oxidation resistance and thermal conductivity. It is also used as ceramic matrix component which transfers external load and deflects matrix cracks. Therefore, it has become a subject matter for many studies. In this study, the process of boron nitride (BN) production from diborane (B2H6) and ammonia (NH3) on tungsten (W) substrate in impinging jet reactor is investigated using chemical v...
Synthesis of CuO nanostructures on zeolite-Y and investigation of their CO2 adsorption properties
Boruban, Cansu; Nalbant Esentürk, Emren (2017-10-01)
Copper(II) oxide (CuO) nanoparticles (NPs) in two different morphologies, spiky and spherical, were synthesized on zeolite-Y by a modified impregnation method, and their CO2 adsorbing capabilities were investigated under standard conditions (1 atm and 298 K). The properties and CO2 adsorption performances of the hybrid systems were characterized by transmission electron microscopy, scanning electron microscopy, energy dispersive X-ray, X-ray diffraction, X-ray photoelectron spectroscopy, atomic absorption s...
Citation Formats
H. Camurlu, A. Aydogdu, Y. A. Topkaya, and N. Sevinc, “Production of boron nitride by carbothermic and mechanochemical methods, and nanotube formation,” 2003, vol. 169, Accessed: 00, 2020. [Online]. Available: