Effects of Raw Material Content on Efficiency of TiN Synthesized by Reactive Ball Milling Ti and Urea

Autor:	LI Xiao-Pu, Zhao Yu-Cheng, Liang Bao-Yan, Wang Ming-zhi, Sun Jin-Feng
Rok vydání:	2009
Předmět:	Materials science General Physics and Astronomy chemistry.chemical_element Thermogravimetry chemistry.chemical_compound Ammonia Differential scanning calorimetry chemistry Chemical engineering Urea Tin Thermal analysis Ball mill Diffractometer
Zdroj:	Chinese Physics Letters. 26:078102
ISSN:	1741-3540 0256-307X
Popis:	Ti and urea mixed according to the molar ratios of 2:1, 3:1 and 4:1 are milled under the same condition. The structures of the as-synthesized powders are analyzed by an x-ray diffractometer (XRD). The decomposed temperature of the urea and the products decomposed are characterized by differential scanning calorimetry (DSC) and thermogravimetry analysis-Fourier transform infrared (TG-FTIR) spectrometry. The results show that the reaction progress is a diffusion reaction. The efficiency of TiN synthesized by reactive ball milling can be increased by increasing the content of Ti. The reactive ball milling time decreases from more than 90 h to 40 h corresponding to the content ratio between Ti and urea increasing from 2:1 to 4:1. Ammonia gas (NH3) and cyanic acid (HNCO), the decomposed products of urea, react with the refined Ti to form TiN. The grain refinement of Ti has a significant effect on the efficiency of reactive ball milling.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4e168a208046a3379d33f09d62847416 https://doi.org/10.1088/0256-307x/26/7/078102 Zobrazit plný text záznamu