Review of melt casting of dense ceramics and glasses by high gravity combustion synthesis

Liu, G H; Li, J T; Chen, K X

doi:10.1179/1743676112y.0000000055

Cited by 16 publications

(3 citation statements)

References 53 publications

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“…It has wide range of applications such as in abrasives, cutting tools, polishing powders, resistive heating elements, shape-memory alloys, high temperature intermetallic compounds, steel processing additives (nitrided ferroalloys), electrodes for electrolysis of corrosive media, coatings for containment of liquid metals and corrosive media, thin films and coatings, functionally graded materials and composite materials [20]. SHS method is also developed to be used in preparing dense ceramics and glasses by melt casting instead of conventional powder sintering [20][21]. This technique combines strong exothermic chemical reactions with a high gravity field, and offers an efficient and furnace free way for rapid production of bulk ceramic and glass materials.…”

Section: J Min Metall Sect B-metall 52 (1) B (2016) 69 -76mentioning

confidence: 99%

Effect of synthesis on the purity and particle size of ZrB2 powder

Gadakary

Davidson

Veerababu

et al. 2016

J min metall B Metall

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In the present investigation, an attempt has been made to prepare ZrB 2 powder by self-propagating high temperature synthesis (SHS) technique. The effect of synthesis on the purity and morphology of powder is investigated. A stoichiometric mixture of ZrO 2 , H 3 BO 3 and Mg powder is synthesised in a resistance heating tubular furnace with continuous flow of high pure argon gas. The synthesis is also carried out with NaCl as a diluent. The MgO is leached out from the as-synthsised powder. Phase analysis of powder is performed by X-ray diffraction (XRD). Laser beam scattering technique is used to measure the particle size distribution. The morphology of powder is characterized by scanning and transmission electron microscopes. The XRD results show the presence of significant amount of unreacted ZrO 2 phase in the product. The product is mixed with calculated amount of magnesium and boric acid and the mixture is synthesised further. There is a significant decrease of unreacted ZrO 2 in the product after double synthesis. The SEM images show the presence of agglomeration of fine particles, whereas the TEM images show the decrease of particle size after double synthesis. To understand the synthesis process, the individual synthesis of ZrO 2-Mg and H 3 BO 3-Mg are also performed.

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Section: J Min Metall Sect B-metall 52 (1) B (2016) 69 -76mentioning

confidence: 99%

Effect of synthesis on the purity and particle size of ZrB2 powder

Gadakary

Davidson

Veerababu

et al. 2016

J min metall B Metall

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“…In this experiment, the method of gravitational separation self-propagation high-temperature synthesis (GS-SHS) [13,14] was used to prepare the coating composite materials on the inner wall of the seamless steel pipe with the reaction system of Al-Fe 2 O 3 -Cr 2 O 3 . The formation of the transition structure and its influences on the morphology, composition, performance and quality of the ceramic-lined composite steel pipe were investigated.…”

Section: Introductionmentioning

confidence: 99%

Study on the Structural Analysis of Al<sub>2</sub>O<sub>3</sub> Ceramic-Lined Steel Pipe Prepared with the Gravitational Separation SHS Method

Hou

Yang

et al. 2018

KEM

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One kind of Al2O3 ceramic-lined steel pipe was prepared with the gravitational separation SHS method by using the reaction system of Al-Fe2O3-Cr2O3. The element line scans of transition structure and the element plane scans of ceramic coating far away from transition layer were analyzed by Scanning Electron Microscopy and Energy Dispersive Spectroscopy, and then they were used to discuss the coating structure and interface bonding mechanism, and investigate the element composition distribution of coating. All of these were closely related to improving the properties of ceramic-lined steel pipe. The results showed that a transition layer was formed between metal pipe and ceramic coating, it was due to the gravitational separation and molecular diffusion motion of the reaction products in molten state; in the transition structure the amount of the reaction elements was gradually transitional from the direction of the coating-transition layer-steel pipe, which could reduce the stress difference between the layers; in the coating far away from the transition layer, only small amount of Fe embedded in the ceramic was left in the form of Fe-Cr alloy, while Cr was uniformly enriched in the Al2O3 ceramic, these all have great influence on the anti-corrosion ability of coating.

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“…20 Self-propagating high temperature synthesis method is also developed to be used in preparing dense ceramics and glasses by melt casting instead of conventional powder sintering. 21,22 This technique combines strong exothermic chemical reactions with a high gravity field, and offers an efficient and furnace free way for rapid production of bulk ceramic and glass materials. The main drawbacks of this process are to control the kinetic of reaction because of very fast process.…”

Section: Introductionmentioning

confidence: 99%

Production of nanocrystalline TiB₂powder through self-propagating high temperature synthesis (SHS) of TiO₂–H₃BO₃–Mg mixture

Gadakary

Khanra

Veerabau

2014

Advances in Applied Ceramics

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Nanocrystalline TiB2 powders are produced through self-propagating high temperature synthesis (SHS) technique by igniting the stoichiometric mixture of titanium oxide (TiO2), boric acid (H3BO3) and magnesium (Mg) powder. Different percentages of NaCl are added to the mixture as SHS diluent in order to control the particle size of the TiB2. The synthesised and purified powder is characterised by X-ray diffraction and electron microscopes respectively. The SEM images show the presence of agglomeration of fine spherical particles. The TEM images reveal the formation of nanocrystalline TiB2 particles. The particle size is found to decrease with the addition of NaCl. The TEM images reveal the presence of crystallographic defects in the powder. In order to find out the reaction mechanism of TiO2–H3BO3–Mg system, the synthesis of TiO2–Mg and H3BO3–Mg mixtures is performed in inert atmosphere and phase analysis of TiO2–Mg and H3BO3–Mg mixtures reveal the reaction mechanism.

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Review of melt casting of dense ceramics and glasses by high gravity combustion synthesis

Cited by 16 publications

References 53 publications

Effect of synthesis on the purity and particle size of ZrB2 powder

Effect of synthesis on the purity and particle size of ZrB2 powder

Study on the Structural Analysis of Al<sub>2</sub>O<sub>3</sub> Ceramic-Lined Steel Pipe Prepared with the Gravitational Separation SHS Method

Production of nanocrystalline TiB₂powder through self-propagating high temperature synthesis (SHS) of TiO₂–H₃BO₃–Mg mixture

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Review of melt casting of dense ceramics and glasses by high gravity combustion synthesis

Cited by 16 publications

References 53 publications

Effect of synthesis on the purity and particle size of ZrB2 powder

Effect of synthesis on the purity and particle size of ZrB2 powder

Study on the Structural Analysis of Al<sub>2</sub>O<sub>3</sub> Ceramic-Lined Steel Pipe Prepared with the Gravitational Separation SHS Method

Production of nanocrystalline TiB2powder through self-propagating high temperature synthesis (SHS) of TiO2–H3BO3–Mg mixture

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Product

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Production of nanocrystalline TiB₂powder through self-propagating high temperature synthesis (SHS) of TiO₂–H₃BO₃–Mg mixture