Effect of synthesis on the purity and particle size of ZrB2 powder
In the present investigation, an attempt has been made to prepare ZrB2 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 ZrO2, H3BO3 and Mg powder is synthesised...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2016-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2016/1450-53391600008G.pdf |
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| author | Gadakary S. Davidson M.J. Veerababu R. Khanra A.K. |
| author_facet | Gadakary S. Davidson M.J. Veerababu R. Khanra A.K. |
| author_sort | Gadakary S. |
| collection | DOAJ |
| description | In the present investigation, an attempt has been made to prepare ZrB2 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 ZrO2, H3BO3 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 ZrO2 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 ZrO2 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 ZrO2-Mg and
H3BO3-Mg are also performed. |
| format | Article |
| id | doaj-art-a7050c4875374af2b05daec664d451c1 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-a7050c4875374af2b05daec664d451c12025-02-02T20:07:23ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752016-01-01521697610.2298/JMMB141121008G1450-53391600008GEffect of synthesis on the purity and particle size of ZrB2 powderGadakary S.0Davidson M.J.1Veerababu R.2Khanra A.K.3National Institute of Technology, Department of Metallurgical and Materials Engineering, Warangal, IndiaNational Institute of Technology, Department of Mechanical Engineering, Warangal, IndiaDefence Metallurgical Research Laboratory, Hyderabad, IndiaNational Institute of Technology, Department of Metallurgical and Materials Engineering, Warangal, IndiaIn the present investigation, an attempt has been made to prepare ZrB2 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 ZrO2, H3BO3 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 ZrO2 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 ZrO2 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 ZrO2-Mg and H3BO3-Mg are also performed.http://www.doiserbia.nb.rs/img/doi/1450-5339/2016/1450-53391600008G.pdfceramicsSHSnanocrystallinezirconium diborideXRDSEMTEM |
| spellingShingle | Gadakary S. Davidson M.J. Veerababu R. Khanra A.K. Effect of synthesis on the purity and particle size of ZrB2 powder Journal of Mining and Metallurgy. Section B: Metallurgy ceramics SHS nanocrystalline zirconium diboride XRD SEM TEM |
| title | Effect of synthesis on the purity and particle size of ZrB2 powder |
| title_full | Effect of synthesis on the purity and particle size of ZrB2 powder |
| title_fullStr | Effect of synthesis on the purity and particle size of ZrB2 powder |
| title_full_unstemmed | Effect of synthesis on the purity and particle size of ZrB2 powder |
| title_short | Effect of synthesis on the purity and particle size of ZrB2 powder |
| title_sort | effect of synthesis on the purity and particle size of zrb2 powder |
| topic | ceramics SHS nanocrystalline zirconium diboride XRD SEM TEM |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2016/1450-53391600008G.pdf |
| work_keys_str_mv | AT gadakarys effectofsynthesisonthepurityandparticlesizeofzrb2powder AT davidsonmj effectofsynthesisonthepurityandparticlesizeofzrb2powder AT veerababur effectofsynthesisonthepurityandparticlesizeofzrb2powder AT khanraak effectofsynthesisonthepurityandparticlesizeofzrb2powder |