Mechanical Milling Method in Tantalum Hydrides Preparation

There are various processes which few tantalum compounds can be prepared, containing hydrides. In this work, the synthesis of few phases of tantalum hydrides (Ta-hydrides) is reported utilizing the mechanical alloying method. This type of hydride was formed “in situ” all along mechanical grinding process. During this process hydrogenated solvent dissociates into hydrogen atoms that react accompanying tantalum particles. Metallic Ta accompanying a purity of 99.8% was used to obtain their matching hydrides. The tantalum hydrogenated phases were combined with a spex-type high-strength ball mill. With this structure, relatively short opportunities were programmed from 5 to 20 h. In addition to the hydrides, various oxides were acquired during the grinding process, which were formed as a function of the grinding time. To experience the phases formed, description techniques in the way that DRX and SEM were used. Thermogravimetric analysis (TGA) was another method used for their study. With the result of X-ray diffraction, tantalum hydrides (Ta2H and TaH0.5) were identified following in position or time 20 h of milling. Some hydrogenated solvent such as methanol maybe used as a beginning of hydrogen to form “in situ” hydrides in this case of tantalum.

Author(s) Details:

J. L. Iturbe García,
Chemistry Department, National Institute of Nuclear Researches, Km 36.5 Mexico-Toluca Road u/n, la Marquesa C.P. 52045, Ocoyoacac, Mexico.

B. E. López-Muñoz,
Chemistry Department, National Institute of Nuclear Researches, Km 36.5 Mexico-Toluca Road u/n, la Marquesa C.P. 52045, Ocoyoacac, Mexico.

Please see the link here: https://stm.bookpi.org/RACMS-V5/article/view/9038

Keywords: Tantalum hydrides, mechanical milling, methanol dissociation, XRD-TGA-SEM techniques