Effect of NaCl Addition on Properties of Submicron Titanium Diboride Powders Prepared by Self-propagating High-temperature Synthesis on a Large Scale
La Peiqing1; Ou Yujing2; Han Shaobo1; Lu Xuefeng1; Wei Yupeng1
2015
Source Publication材料工程
ISSN1001-4381
Volume43Issue:7Pages:14-20
AbstractSubmicron titanium diboride (TiB_2) powders were prepared on macroscopic quantity via self-propagating high-temperature synthesis route using TiO_2,B_2O_3 and Mg powders as raw materials and NaCl as diluent. Scanning electron microscope,Energy disperse spectroscopy, X-ray diffraction and particle size analysis were used to investigate the effect of NaCl on the resulting samples. The content of Mg and O impurities in the leached TiB_2 powders was determined by atomic absorption spectrum. Results show that NaCl addition has an obvious effect on the morphology, average particle size and phase composition of the product. Average particle size of TiB_2 powders decreases from 496nm to 268nm with the increase of NaCl content. All the samples before leaching consist of MgO,NaCl, TiB_2 and a small amount of Mg_3B_2O_6 phases. After leaching, the first two phases disappear and the main product is TiB_2 and slight Mg_3B_2O_6. When NaCl addition (k value) is 0.5, 1.0, 1.5,2. Omol, the leached product contains less Mg_3B_2O_6 impurity phase, and product purity is over 98%. The addition of NaCl diluent is conductive to reduce the particle size and improve the product purity. Therefore submicron TiB_2 powders can be prepared via this approach on a large scale.
Keywordsubmicron TiB_2 powder diluent self-propagating high-temperature synthesis morphology phase
Indexed ByCSCD
Language英语
WOS Research AreaEngineering
WOS SubjectENGINEERING INDUSTRIAL
CSCD IDCSCD:5472763
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/70847
Collection材料科学与工程学院
Affiliation1.Lanzhou University of Science and Engineering, State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou, Gansu 730050, China
2.School of Petrochemical Engineering, Lanzhou University of Science and Engineering, Lanzhou, Gansu 730050, China
Recommended Citation
GB/T 7714
La Peiqing,Ou Yujing,Han Shaobo,et al. Effect of NaCl Addition on Properties of Submicron Titanium Diboride Powders Prepared by Self-propagating High-temperature Synthesis on a Large Scale[J]. 材料工程,2015,43(7):14-20.
APA La Peiqing,Ou Yujing,Han Shaobo,Lu Xuefeng,&Wei Yupeng.(2015).Effect of NaCl Addition on Properties of Submicron Titanium Diboride Powders Prepared by Self-propagating High-temperature Synthesis on a Large Scale.材料工程,43(7),14-20.
MLA La Peiqing,et al."Effect of NaCl Addition on Properties of Submicron Titanium Diboride Powders Prepared by Self-propagating High-temperature Synthesis on a Large Scale".材料工程 43.7(2015):14-20.
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