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Synthesis of Chromium Carbide Nanopowders by Microwave Heating and Their Composition and Microstructure Change Under Gamma Ray Irradiation

Synthesis of Chromium Carbide Nanopowders by Microwave Heating and Their Composition and Microstructure Change Under Gamma Ray Irradiation

Kai Jin, Yuanbo Jia, Zhiwei Zhao, Weiqiang Song, Shun Wang, Chunlong Guan

Molecules. 2018 Dec 20;24(1):16.

PMID: 30577552

Abstract:

Chromium carbide nanopowders were synthesized by mechanical alloying-assisted microwave heating. The effect of gamma irradiation on phase composition and microstructure of chromium carbide nanopowders synthesized by the microwave heating method was analyzed. The samples were characterized by X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM) techniques. The results showed that well-dispersed chromium carbide nanopowders can be synthesized by maintaining the temperature at 1000 °C for 1 h. Gamma ray irradiation had an important effect on the microstructure of chromium carbide nanopowders. The interplanar spacings of chromium carbide (110) crystal faces before and after gamma ray irradiation were 0.3725 nm and 0.3824 nm, respectively. The crystal structure of chromium carbide was changed by gamma ray irradiation. Gamma ray irradiation can also increase the binding energy of chromium carbide, which is beneficial to improve the thermal stability and mechanical properties of chromium carbide at high temperature.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP12012350	Chromium carbide		12012-35-0	Price

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