Synthesis and characterization of magnesium nitride powder formed by Mg direct reaction with N2

Zong, Fujian; Meng, Chunzhan; Guo, Zhiming; Jiang, Feng; Xiao, Hongdi; Zhang, Xijian; Ma, Jin; Ma, Hongmei

doi:10.1016/j.jallcom.2010.07.224

Cited by 27 publications

(20 citation statements)

References 30 publications

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“…At these high temperatures, nitrogen, which does not appreciably react with Mg at lower temperatures, becomes a reactant by the following reaction [43,52]:…”

Section: Ignition and Burningmentioning

confidence: 99%

Oxidation of magnesium alloys at elevated temperatures in air: A review

et al. 2016

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Highlights The oxidation behaviours of Mg alloys from low to high temperatures are reviewed. Characteristics of MgO during oxidation is discussed. Mechanisms of Mg oxidation is presented. Effect of various alloying elements is analysed. AbstractThis paper reviews (i) the oxidation of Mg alloys at elevated temperatures in air; (ii) the influence of alloying elements on the oxidation of Mg alloys; and (iii) the progress in the development of oxidation-resistant Mg alloys. Low oxidation rates have been shown by Mg alloys containing the alloying elements, Ca, Be and rare earth elements. However, these alloying elements may also decrease mechanical properties, such as ductility.

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“…At these high temperatures, nitrogen, which does not appreciably react with Mg at lower temperatures, becomes a reactant by the following reaction [43,52]:…”

Section: Ignition and Burningmentioning

confidence: 99%

Oxidation of magnesium alloys at elevated temperatures in air: A review

et al. 2016

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“…The TGA curve keeps decreasing from 960°C to 1160°C and there is an evident endothermic peak at 960°C. This is attributed to the vaporization of Mg melt, because Mg 3 N 2 , Si 3 N 4 , and MgSiN 2 are all stable in this temperature range . Note that the DSC curve shows a fluctuating trend in the temperature range of 600–1100°C.…”

Section: Resultsmentioning

confidence: 92%

“…This is attributed to the vaporization of Mg melt, because Mg 3 N 2 , Si 3 N 4 , and MgSiN 2 are all stable in this temperature range. 11,23 Note that the DSC curve shows a fluctuating trend in the temperature range of 600-1100°C. This phenomenon is in good agreement with earlier published data on the thermal behavior of Mg powders in N 2 atmosphere, 23 which pointed out that the competition between the exothermic nitridation processes and the endothermic melting/ vaporizing processes would result in the complicated trend in DSC curve.…”

Section: The Formation Mechanism Of Mgsinmentioning

confidence: 99%

“…11,23 Note that the DSC curve shows a fluctuating trend in the temperature range of 600-1100°C. This phenomenon is in good agreement with earlier published data on the thermal behavior of Mg powders in N 2 atmosphere, 23 which pointed out that the competition between the exothermic nitridation processes and the endothermic melting/ vaporizing processes would result in the complicated trend in DSC curve. When the nitridation processes are dominant, exothermic peaks can be seen.…”

Section: The Formation Mechanism Of Mgsinmentioning

confidence: 99%

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Combustion synthesis of MgSiN₂ powders and Si₃N₄‐MgSiN₂ composite powders: Effects of processing parameters

Han

et al. 2019

J Am Ceram Soc

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In the present work, high‐quality MgSiN2 powders were prepared by a combustion synthesis method, based on Mg‐Si3N4‐N2 system. The effects of additive content (NH4Cl or NH4F) and N2 pressure on phase composition and crystal morphology of products were investigated. The results suggested that both NH4Cl and NH4F additives alleviated agglomeration and decreased the grain size of MgSiN2. In addition, NH4Cl did not result in the formation of an extra impurity, while MgF2 residue was found when NH4F was introduced. Therefore, NH4Cl additive was considered as a better choice for the preparation of MgSiN2 powders in comparison with NH4F additive. According to the observation of some MgSiN2 whiskers and notably increased Si content under low N2 pressure, the pressure of N2 over 0.5 MPa was essential to have a complete reaction in the present work. Finally, MgSiN2‐Si3N4 composite powders with quasi‐spherical morphology were prepared by adding excessive Si3N4 and NH4Cl additive in reactant. The formation and growth mechanism of MgSiN2 grains was reasonably speculated based on the experimental results. Because of the remarkable merits, the as‐prepared Si3N4‐MgSiN2 composite powders showed great potential for alternative sintering aid in the sintering of Si3N4‐based ceramics.

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“…The control sample showed that the sample lost 4.10% of its initial weight till 421°C, afterward the weight of the sample was continuously increased. It was reported that the reduction in weight loss of Mg 3 N 2 in TGA curve in N 2 atmosphere under 500°C was due to the release of H 2 O, CO 2 , N 2 and O 2 from the surface of powder [22]. However, the weight of the sample was started to increase after 421°C.…”

Section: Tga Analysismentioning

confidence: 95%

Evaluation of Thermal and Physical Properties of Magnesium Nitride Powder: Impact of Biofield Energy Treatment

Trivedi¹,

Tallapragada²,

Branton³

et al. 2015

Ind Eng Manage

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Magnesium nitride (Mg 3 N 2 ) has gained extensive attention due to its catalytic and optoelectronic properties. The present investigation was aimed to evaluate the effect of biofield energy treatment on physical and thermal properties of Mg 3 N 2 powder. The Mg 3 N 2 powder was divided into two parts i.e. control and treated. The control part was remained as untreated and the treated part was subjected to the Mr. Trivedi's biofield energy treatment. Subsequently, the control and treated Mg 3 N 2 samples were characterized using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and X-ray diffraction (XRD). The DSC results showed the specific heat capacity of 2.24 Jg -1°C-1 in control, which increased upto 5.55 Jg -1°C-1 in treated Mg 3 N 2 sample. The TGA data revealed that the onset temperature for the formation of magnesium oxide, possibly due to oxidation of Mg 3 N 2 in the presence of air and moisture, was reduced from 421.0°C (control) to 391.33°C in treated sample. Besides, the XRD data revealed that the lattice parameter and unit cell volume of treated Mg 3 N 2 samples were increased by 0.20 and 0.61% respectively, as compared to the control. The shifting of all peaks toward lower Bragg angle was observed in treated sample as compared to the control. The XRD diffractogram also showed that the relative intensities of all peaks were altered in treated sample as compared to control. In addition, the density of treated Mg 3 N 2 was reduced by 0.60% as compared to control. Furthermore, the crystallite size was significantly increased from 108.05 nm (control) to 144.04 nm in treated sample as compared to the control. Altogether data suggest that biofield energy treatment has substantially altered the physical and thermal properties of Mg 3 N 2 powder. Thus, the biofield treatment could be applied to modulate the catalytic and optoelectronic properties of Mg 3 N 2 for chemical and semiconductor industries.

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Synthesis and characterization of magnesium nitride powder formed by Mg direct reaction with N2

Cited by 27 publications

References 30 publications

Oxidation of magnesium alloys at elevated temperatures in air: A review

Oxidation of magnesium alloys at elevated temperatures in air: A review

Combustion synthesis of MgSiN₂ powders and Si₃N₄‐MgSiN₂ composite powders: Effects of processing parameters

Evaluation of Thermal and Physical Properties of Magnesium Nitride Powder: Impact of Biofield Energy Treatment

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Synthesis and characterization of magnesium nitride powder formed by Mg direct reaction with N2

Cited by 27 publications

References 30 publications

Oxidation of magnesium alloys at elevated temperatures in air: A review

Oxidation of magnesium alloys at elevated temperatures in air: A review

Combustion synthesis of MgSiN2 powders and Si3N4‐MgSiN2 composite powders: Effects of processing parameters

Evaluation of Thermal and Physical Properties of Magnesium Nitride Powder: Impact of Biofield Energy Treatment

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Product

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Combustion synthesis of MgSiN₂ powders and Si₃N₄‐MgSiN₂ composite powders: Effects of processing parameters