A novel route for preparing MgSiN2 powder by combustion synthesis

Peng, Guihua; Jiang, Guojian; Han-Rui, Zhuang; Li, Wenlan

doi:10.1016/j.msea.2005.01.047

Cited by 23 publications

(6 citation statements)

References 8 publications

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“…For the first batch, elemental Mg and Si powders were mixed in a stoichiometric proportion of MgSiN 2 , while for the second batch, elemental Mg and Si powders were used with the mole ratio of 2:1, which were blended before MA. 10 After blending, 8 g of the powder mixture was loaded into a stainless steel vial together with 2 wt-% of stearic acid and hardened steel balls of 8 mm diameter. The weight ratio of ball to powder was controlled at about 20:1.…”

Section: Methodsmentioning

confidence: 99%

“…Single phase MgSiN 2 with different oxygen contents has been synthesised by conventional direct nitridation of different powder mixtures. [3][4][5] Peng et al 10 prepared the MgSiN 2 powder using combustion synthesis in nitrogen gas from several different starting mixtures Mg 2 Si, Mg þ Si 3 N 4 . However, they did not obtain good results from the combined Si þ Mg.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of magnesium silicon nitride nanopowder by employing two-step method

Khajelakzay

Bakhshi

Borhani

2015

Advances in Applied Ceramics

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In this work, a new method for the preparation of magnesium silicon nitride (MgSiN 2 ) nanopowder was studied using a two-step process in nitrogen gas from Mg/Si starting mixtures. This method is known as mechanical alloying followed by heat treatment. The results showed that the compositions of the combustion products depended on the starting mixtures. In addition, the content of magnesium and silicon in the starting powder should fulfil the condition Mg/Si ¼ 2 to obtain single phase MgSiN 2 .Single phase MgSiN 2 nanopowder can be fabricated from Mg and Si powders with mole ratio of 2:1 at 13508C in N 2 atmosphere. Composition and structure of reactants and products were examined by X-ray diffraction, field emission scanning electron microscopy and high resolution transmission electron microscopy.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of magnesium silicon nitride nanopowder by employing two-step method

Khajelakzay

Bakhshi

Borhani

2015

Advances in Applied Ceramics

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“…When the experiments were conducted at 1450˚C for 3 h, the content of Si 3 N 4 increased. Figure 2 shows the SEM images and EDS analysis results of the products synthesized at 1450˚C after holding for long time, resulting in a large number of evaporation of magnesium, so the product in addition to MgSiN 2 also appeared in Si, MgO and not identified phases [11]. Oxygen impurities will reduce the thermal conductivity of the product, but the MgO can be washed off by acid washing [29].…”

Section: R Guo Et Al Journal Of Materials Science and Chemical Engimentioning

confidence: 99%

Synthesis of MgSiN<sub>2</sub> Powders from the Mg-Si System

Guo¹,

Yi²,

Liu³

et al. 2018

MSCE

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Magnesium silicon nitride (MgSiN 2 ) was synthesized without any additives under a nitrogen gas flow (200 mL/min) using a nitriding method. The effects of temperature and holding time on its purity and morphology were investigated. A single-phase MgSiN 2 powder was obtained at 1350˚C for 1 h and 1250˚C for 11 h. However, the decomposition of MgSiN 2 occurred at 1450˚C, suggesting that the optimum temperature for the preparation of MgSiN 2 from Mg-Si system was 1350˚C. The phase purity, morphology, size of the product and elemental composition of the samples were detected by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy spectrometer (EDS), respectively. The evaporation of Mg and Si resulted in the formation of many voids in the blocky product. The temperature gradient promotes the growth of MgSiN 2 on the surface of massive products along the tip. The concentration gradient of Mg and Si vapors in the void resulted in the columnar growth of MgSiN 2 .

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“…Combustion synthesis (CS), also called self-propagating high-temperature synthesis (SHS) is well-know to prepare a series of advanced materials, due to its energy-efficient, time-saving, low processing cost, mass production, high production rate [19] [20]. Thus, preparation of MgSiN 2 by combustion synthesis in nitrogen gas was also widely studied using different starting materials (Mg/Si 3 N 4 , Mg/Si, Mg 2 Si) as reactant [21]. However, the reaction mechanism is still unclear during combustion synthesis process for preparation of MgSiN 2 .…”

Section: Introductionmentioning

confidence: 99%

Combustion Synthesis of MgSiN<sub>2</sub> Powder at Different Nitrogen Pressures

Zhou¹,

Zhang²,

Li³

et al. 2019

MSCE

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MgSiN 2 powders have been synthesized by combustion synthesis (CS) using Mg and Si 3 N 4 as starting materials at different nitrogen pressures. The CSed powders were then sintered by spark plasma sintering (SPS) to obtain dense bulk MgSiN 2 product. Analysis of the CSed powder using X-ray diffraction (XRD) revealed single-phase MgSiN 2 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 MgSiN 2 was 3.11 g/cm 3 , Vickers hardness was 1673.1 kgf/mm 2 , and thermal diffusivity was 8.718E −2 cm 2 /s.

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A novel route for preparing MgSiN2 powder by combustion synthesis

Cited by 23 publications

References 8 publications

Synthesis of magnesium silicon nitride nanopowder by employing two-step method

Synthesis of magnesium silicon nitride nanopowder by employing two-step method

Synthesis of MgSiN<sub>2</sub> Powders from the Mg-Si System

Combustion Synthesis of MgSiN<sub>2</sub> Powder at Different Nitrogen Pressures

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A novel route for preparing MgSiN2 powder by combustion synthesis

Cited by 23 publications

References 8 publications

Synthesis of magnesium silicon nitride nanopowder by employing two-step method

Synthesis of magnesium silicon nitride nanopowder by employing two-step method

Synthesis of MgSiN&lt;sub&gt;2&lt;/sub&gt; Powders from the Mg-Si System

Combustion Synthesis of MgSiN&lt;sub&gt;2&lt;/sub&gt; Powder at Different Nitrogen Pressures

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Product

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Synthesis of MgSiN<sub>2</sub> Powders from the Mg-Si System

Combustion Synthesis of MgSiN<sub>2</sub> Powder at Different Nitrogen Pressures