Home > Industry > Magnesium nitride films were synthesized on 304 stainless steel substrates

Magnesium nitride films were synthesized on 304 stainless steel substrates

wallpapers Industry 2021-04-14
About Magnesium nitride
Magnesium nitride (Mg3N2) is an inorganic compound composed of nitrogen and magnesium. At room temperature, pure magnesium nitride is a yellow-green powder, but magnesium nitride with some magnesium oxide impurities is off-white. Magnesium nitride, like many metal nitrides, reacts with water to produce ammonia.
Magnesium nitride can be used as a catalyst for the synthesis of cubic boron nitride. In the first successful synthesis of cubic boron nitride, magnesium nitride was used as a catalyst.
In 1957, chemist Robert Wentorf was trying to convert hexagonal boron nitride into cubic boron nitride. He used to heat, pressure, catalysts, and various combinations of the above conditions. He tried all the theoretically relevant catalysts (such as those used in the synthesis of diamonds) but to no avail.
 
Later, driven by curiosity and in a desperate venture (the aim, he says, was simply to "increase the number of false attempts"), he applied the same pressure and heat treatment conditions but added magnesium to hexagonal boron nitride. The magnesium was then examined under a microscope and found to have tiny dark lumps on it that could scratch polished boron carbide, the only substance known to do so at the time.
Because of the smell of ammonia (produced by the reaction of magnesium nitride with moist air), Wentorf concluded that magnesium and boron nitride reacted to produce magnesium nitride and that magnesium nitride acted as a catalyst to change hexagonal boron nitride to cubic boron nitride.
 
Magnesium nitride films were synthesized on 304 stainless steel substrates
Magnesium nitride thin films were first synthesized on 304 stainless steel substrates by a Mather type (2 kJ) plasma focusing (PF) device. The magnesium nitride film is covered with a different number of focusing lenses 8 cm from the top of the anode at an Angle of 0° relative to the anode shaft. The microstructure and surface morphology of magnesium nitride thin films were investigated by X-ray diffractometry (XRD), atomic force microscopy (AFM) and scanning electron microscopy (SEM). The elemental composition was characterized by energy-dispersive X-ray (EDX) analysis. In addition, the mechanical properties of the deposited film were studied by Vickers microhardness. The results show that the crystallinity (XRD), average particle size and surface roughness (AFM), crystal growth (SEM) and hardness of the film are all determined by the number of focusing lenses.EDX analysis showed that there were magnesium elements in the deposited samples.

Say something
  • All comments(0)
    No comment yet. Please say something!
Tag: