Finite-difference modelling of self-propagating high-temperature synthesis of materials

Bowen, Chris R.; Derby, Brian

doi:10.1016/0956-7151(95)90173-6

Cited by 24 publications

(8 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the availability of experimental results of radial combustion on disk shaped samples (Durães et al, 2006a) has stimulated, in an earlier work, the derivation of a onedimensional model to describe the Fe 2 O 3 /Al radial combustion propagation (Brito et al, 2005). The built model congregates several features of simpler models published (Bowen and Derby, 1995, Carrillo-Heian et al, 1999, Graeve et al, 2001, CuadradoLaborde et al, 2003. It considers non-steady propagation with conductive/radiative heat transfer mechanisms and zero order reaction kinetics.…”

Section: Introductionmentioning

confidence: 99%

Modelling and simulation of Fe2O3/Aluminum thermite combustion: Experimental validation

Durães

Brito

Campos

et al. 2006

16th European Symposium on Computer Aided Process Engineering and 9th International Symposium on Process Systems Engineering

View full text Add to dashboard Cite

A one-dimensional model was built to simulate the non-steady radial combustion propagation on thin circular samples of Fe 2 O 3 /Aluminum thermite mixtures. The model considers zero order kinetics and conductive/radiative heat transfer. All the properties of the system are assumed to vary with the temperature and composition during the propagation and phase transitions are also contemplated. These features, not yet considered in the literature, allowed the obtainment of realistic solutions, readily comparable with experimental values measured in an earlier work. The experimental combustion velocities were used to adjust the kinetic constant of the model, in order to give it a good predictive capability. The predicted combustion temperatures and reaction extents were higher than the experimental. This was justified by the heat losses due to the spraying of products away from the combustion system and the incompleteness of the reaction, observed in experimental conditions and not considered in the model.

show abstract

Section: Introductionmentioning

confidence: 99%

Modelling and simulation of Fe2O3/Aluminum thermite combustion: Experimental validation

Durães

Brito

Campos

et al. 2006

16th European Symposium on Computer Aided Process Engineering and 9th International Symposium on Process Systems Engineering

View full text Add to dashboard Cite

show abstract

“…However, this compact was denser than one produced with M1 procedure. A plausible explanation for this observation is that at the combustion temperature, Al is molten and easily able to migrate leading to an important contribution from the TiO 2 /C interfaces [45]. In case of M2 sample the complete reaction between the starting reactants (as dictated from the XRD pattern ( Fig.…”

Section: Effect Of the Mixing Proceduresmentioning

confidence: 94%

Simultaneous synthesis and sintering of TiC/Al2O3 composite via self propagating synthesis with direct consolidation technique

Ahmed

Zaki

Bordia

et al. 2016

Ceramics International

View full text Add to dashboard Cite

This manuscript presents the results of a study on the use of self propagating high temperature synthesis technique combined with direct consolidation for simultaneous synthesis and densification of TiC/Al 2 O 3 composite. The effects of both the mixing procedure of the starting reactant powders, and the addition of different mole fraction of alumina were investigated. The samples were characterized chemically, physically, and morphologically and their mechanical properties measured. It was found that changing the mixing procedure of the starting powders reduced the porosity of the combustion product from 24 to 7 vol%. On the other hand, the addition of 1.0 mol alumina was found to increase the porosity to 13 vol% and hence lower the mechanical properties. However, the addition of alumina resulted in samples with much better geometric definition and therefore this approach should be further investigated with optimized processing conditions.

show abstract

“…The lower temperature is sufficient for grain growth, but is below the ignition temperature of 900°C which is commonly found for pressed pellets in the formation of composites of titanium carbide and alumina from TiO 2 , C, and Al. [11][12][13][14][15][16][17][18][19][20][21][22][23][24] Differential thermal analysis was performed on selected powders using approximately 30 mg samples which were heated up in either a nitrogen or argon atmosphere to 1200°C at a heating rate of 20°Cиmin −1 using a Shimadzu DTA-50 instrument. Thermogravimetric analysis was also performed using the same parameters in a Shimadzu TGA-50.…”

Section: Methodsmentioning

confidence: 99%

Ambient‐Temperature Mechanochemical Formation of Titanium Nitride‐Alumina Composites from TiO₂ and FeTiO₃

Welham

Kerr

Willis

1999

Journal of the American Ceramic Society

View full text Add to dashboard Cite

The fabrication of a homogeneous submicrometer-sized powder composed of nanocrystalline (<10 nm) alumina and titanium nitride during high-energy ball-milling is reported in this paper. The starting materials were rutile (TiO 2 ) and aluminum powder. A similar composite with iron was also produced using the mineral ilmenite (FeTiO 3 ) as the starting material. The powders were ball-milled together under a nitrogen atmosphere for 100 h in a laboratory-scale mill and subjected to thermal analysis and isothermal annealing at up to 1200°C. X-ray diffraction showed that all of the phases formed within the milling step and underwent grain growth on annealing. Differential thermal analysis indicated no residual elemental aluminum, confirming that the reaction was completed during the milling operation.

show abstract

Finite-difference modelling of self-propagating high-temperature synthesis of materials

Cited by 24 publications

References 27 publications

Modelling and simulation of Fe2O3/Aluminum thermite combustion: Experimental validation

Modelling and simulation of Fe2O3/Aluminum thermite combustion: Experimental validation

Simultaneous synthesis and sintering of TiC/Al2O3 composite via self propagating synthesis with direct consolidation technique

Ambient‐Temperature Mechanochemical Formation of Titanium Nitride‐Alumina Composites from TiO₂ and FeTiO₃

Contact Info

Product

Resources

About

Finite-difference modelling of self-propagating high-temperature synthesis of materials

Cited by 24 publications

References 27 publications

Modelling and simulation of Fe2O3/Aluminum thermite combustion: Experimental validation

Modelling and simulation of Fe2O3/Aluminum thermite combustion: Experimental validation

Simultaneous synthesis and sintering of TiC/Al2O3 composite via self propagating synthesis with direct consolidation technique

Ambient‐Temperature Mechanochemical Formation of Titanium Nitride‐Alumina Composites from TiO2 and FeTiO3

Contact Info

Product

Resources

About

Ambient‐Temperature Mechanochemical Formation of Titanium Nitride‐Alumina Composites from TiO₂ and FeTiO₃