The anomalous brightness of magnesium-Air flames

Newman, R.N.; Payne, J.F.B.

doi:10.1016/0010-2180(87)90063-0

Cited by 11 publications

(2 citation statements)

References 6 publications

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“…We subtracted magnetic moments of samples from the experimental data with respect to the diamagnetic contribution associated with a nylon-made container. It is known that crystalline growth, governed only by condensation of MgO molecules, leads to the formation of cubes [33]. But, oxygen molecules in air flow are rather active participants in NPs surface growth [34].…”

Section: Characterization Of Npsmentioning

confidence: 99%

Effect of synthesis conditions on room-temperature ferromagnetic properties of Mg-O nanoparticles

Morozov

Sathasivam

Белоусова

et al. 2018

Journal of Alloys and Compounds

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Page 2: Considering the following sentence: "Experimentally RTFM has been observed in undoped MgO nanoparticles preferable synthesized by wet chemical routes", complete with: (see Table 1) A3: CORRECTED. 4) Page 2: Please, explain what the Author mean when they say: "the surface of such nanoparticles was not sufficiently clean" A4: CORRECTED as: "the surface of such nanoparticles could not sufficiently clean compared with NPs produced by gas-phase methods." Q5) Page 3: Substitute "metal magnesium" with "metallic magnesium" A5: "metal" is corrected to "metallic". 6) Page 4: Please, specify better the techniques that are used to evaluate the parameters listed in Table 2, or move the Table in the "Results and discussion" section A6: In page 4 the text was corrected as: "Some parameters of the NPs synthesis, including metal feed rates, gases flow rates, and corresponding collection zones are listed in Table 2. Table 2. Main properties of the Mg-O NPs. S-specific surface area obtained from BET measurements; -mean particle size obtained from SEM micrographs; y-MgO content and a-MgO lattice parameter obtained from XRD data; σ s-maximum specific magnetization (VSM, RT, 10 kOe)." 7) Page 5: As concerns the BET measurements, specify the measurements conditions (i.e., time, temperature, minimum pressure in outgassing procedure) A7: In the text on page 5 was added the sentence: "No outgassing procedures were applied before the BET measurements." 8) Page 6: Correct: "collected in the main zone" with "collected in the main zones" A8: CORRECTED. 9) Page 6: Considering the sentence: "In Figure 2a, NPs of about 50 nm in an average size is generally uniform cubes", please specify how the Authors evaluate the average size. From a first visual investigation, only the interval can be estimated. A9: In the text on page 5 written: "Particle size and morphology were investigated by scanning electron microscopy (SEM) using CARL ZEISS ULTRA PLUS. Electron micrographs were analyzed by Carl Zeiss AxioVision ver. 4.82 image processing software to calculate the average particle size ‹d› [22]." 10) Page 6: Author refer to the "Particle size distribution", but it is not reported. Did the Author evaluate the particles size distribution by SEM images? A10: Yes, see A12.

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Section: Characterization Of Npsmentioning

confidence: 99%

Effect of synthesis conditions on room-temperature ferromagnetic properties of Mg-O nanoparticles

Morozov

Sathasivam

Белоусова

et al. 2018

Journal of Alloys and Compounds

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“…One advantage of magnesium is that it is readily ignited, and thus can serve to initiate the reaction of various energetic formulations. It generates a bright optical emission [7][8][9][10][11] and typically reacts in the vapor phase forming condensed MgO smoke as the main combustion product [12][13][14][15][16]. The ease of ignition for magnesium is associated with the penetrable nature of the surface MgO film covering the metal [17].…”

Section: Introductionmentioning

confidence: 99%

Stability and Ignition of a Siloxane‐Coated Magnesium Powder

Hastings

Schoenitz

Ryan

et al. 2019

Propellants Explo Pyrotec

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Magnesium powders are used widely in reactive and energetic composite materials, such as pyrotechnic formulations, solid fuels and explosives, as a vital ignition source. However, magnesium powders are highly reactive with atmospheric oxygen and moisture, forming the inert magnesium oxide and hydroxide. These reactions limit their shelf life, decrease their potency and affects the overall stability of these materials. In order to increase their long‐term stability, protective magnesium coatings are desired. In this work, a method for coating magnesium powders using tetramethylcyclotetrasiloxane (D4H) through a vapor‐solid interface reaction is described. This reaction requires no solvents, little material, and does not produce any corrosive byproducts. Coated powders demonstrate increased stability when exposed to elevated temperatures and high humidity conditions, with no oxidation of the magnesium observable. Despite improved stability, the coatings do not negatively impact ignition temperature and dynamics for magnesium powders.

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Heat exchange during condensation of the products of the gaseous-phase combustion of metals

Altman

1998

Combust Explos Shock Waves

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The anomalous brightness of magnesium-Air flames

Cited by 11 publications

References 6 publications

Effect of synthesis conditions on room-temperature ferromagnetic properties of Mg-O nanoparticles

Effect of synthesis conditions on room-temperature ferromagnetic properties of Mg-O nanoparticles

Stability and Ignition of a Siloxane‐Coated Magnesium Powder

Heat exchange during condensation of the products of the gaseous-phase combustion of metals

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