Effect of Carbon Content on Morphology, Size and Phase of Submicron Tungsten Carbide Powders by Salt-assisted Combustion Synthesis
La Peiqing1; Ou Yujing2; Han Shaobo1; Wei Yupeng1; Zhu Dandan2; Feng Jing2
2016
Source Publication稀有金属材料与工程
ISSN1002-185X
Volume45Issue:4Pages:853-857
AbstractThe diluent NaCl was introduced into the WO_3-Mg-C-Na_2CO_3 system to prepare submicron tungsten carbide(WC) powders via salt-assisted combustion synthesis. The products were analyzed by SEM, EDS and XRD, and the effects of C content on morphology, average particle size and phase composition of the products were studied. Results show that on basis of the m= 0.125(the number of moles of Na_2CO_3), when the number of moles of carbon in raw material increases from l=2 to 2.25 and 2.5, before leaching, the product is made up of a small number of large size particles and a large number of small size particles; after leaching, samples are composed of aggregates of submicron particles, and the sintering phenomenon between particles is very weak, indicating low degree of aggregation. Particle size distribution of leached product almost falls into the normal distribution, and the particle sizes range from 200 nm to 350 nm. Under the condition of l=2.25, a main target product is WC, and the content of by-products W_2C is extremely few. That is, k= 2.0(the number of moles of NaCl), m= 0.125, and l=2.25 are the process conditions for single-phase WC synthesis.
Keywordcarbon content salt-assisted combustion synthesis tungsten carbide powders morphology phase
Indexed ByCSCD
Language英语
WOS Research AreaEngineering
WOS SubjectENGINEERING INDUSTRIAL
CSCD IDCSCD:5691253
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/71598
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 Carbon Content on Morphology, Size and Phase of Submicron Tungsten Carbide Powders by Salt-assisted Combustion Synthesis[J]. 稀有金属材料与工程,2016,45(4):853-857.
APA La Peiqing,Ou Yujing,Han Shaobo,Wei Yupeng,Zhu Dandan,&Feng Jing.(2016).Effect of Carbon Content on Morphology, Size and Phase of Submicron Tungsten Carbide Powders by Salt-assisted Combustion Synthesis.稀有金属材料与工程,45(4),853-857.
MLA La Peiqing,et al."Effect of Carbon Content on Morphology, Size and Phase of Submicron Tungsten Carbide Powders by Salt-assisted Combustion Synthesis".稀有金属材料与工程 45.4(2016):853-857.
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