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https://doi.org/10.4028/www.scientific.net/KEM.206-213.1021

has been cited by the following article:

• TITLE: Combustion Synthesis of MgSiN2 Powder at Different Nitrogen Pressures

  AUTHORS: Mingu Zhou, Senjing Zhang, Qingda Li, Xuemei Yi

  KEYWORDS: Magnesium Silicon Nitride, Combustion Synthesis, Microstructure, Thermal Diffusivity

  JOURNAL NAME: Journal of Materials Science and Chemical Engineering, Vol.7 No.10, October 29, 2019

  ABSTRACT: MgSiN2 powders have been synthesized by combustion synthesis (CS) using Mg and Si3N4 as starting materials at different nitrogen pressures. The CSed powders were then sintered by spark plasma sintering (SPS) to obtain dense bulk MgSiN2 product. Analysis of the CSed powder using X-ray diffraction (XRD) revealed single-phase MgSiN2 was obtained by CS method. However, the CSed product can be divided into three distinct parts according to its color. Scanning electron microscopy (SEM) observation revealed the grain size and crystallinity decrease gradually from the center to the outer layer. Some small grains clustered together to form larger particles, and there were a large number of pores among the clusters. The grain size seemed increasing with the increase of nitrogen pressure. The bulk density of CS-SPSed MgSiN2 was 3.11 g/cm3, Vickers hardness was 1673.1 kgf/mm2, and thermal diffusivity was 8.718E−2 cm2/s.