Research on preparation process for the in situ nanosized Zr(Y)O2 particles dispersion-strengthened tungsten alloy through synthesizing doped hexagonal (NH4)0.33·WO3
In: ISSN: 0925-8388 ; Journal of Alloys and Compounds ; https://hal.science/hal-02993935 ; Journal of Alloys and Compounds, 2020, 843, pp.156059. ⟨10.1016/j.jallcom.2020.156059⟩, 2020
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Zugriff:
International audience ; Doped hexagonal ammonium tungsten bronze [(NH4)х·WO3, HATB] powder used for elaborating oxide particle dispersion-strengthenedtungsten alloys has received much more attention due to its high activity and special opened-tunneling structures. In this article, the in situnanosized Zr(Y)O2 particles uniformly distributed in the tungsten alloy was successfully prepared through synthesizing doped α-HATB powder and spark plasma sintering process. The processing route involves a molecular-level liquid-liquid doping technique that causes a large number of nanosized particles within tungsten grains. The synthesis mechanism of α-HATB and phase evolution were detailedly investigated. Over 75 % of WZr(Y)O2 powders particles are less than 3 μm. The determined Sw values (5.7), coefficient of uniformity Cu (2.3) of the W-0.5% Zr(Y)O2 doped tungsten are 5.7 and 2.3, respectively, both indicating the narrower size distribution. The average size of Zr(Y)O2 particles in prepared W alloy are about 250 nm under SEM observation. Through milling of these powders, the particles in W-0.5%Zr(Y)O2 alloy and 92.5W-4.9Ni-2.1Fe-0.5%ZrO2 can further decrease to less than 100 nm in size, which are 8-10 times smaller than those in the state-of-the-art review.
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Research on preparation process for the in situ nanosized Zr(Y)O2 particles dispersion-strengthened tungsten alloy through synthesizing doped hexagonal (NH4)0.33·WO3
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Autor/in / Beteiligte Person: | Xiao, Fangnao ; Barriere, Thierry ; Cheng, Gang ; Miao, Qiang ; Wei, Shizhong ; Zuo, Shiwei ; Huang, Zhimin ; Xu, Liujie ; Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST) ; Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) ; Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) ; Mécanique des Matériaux et Procédés (MMP) ; Laboratoire de Mécanique Gabriel Lamé (LaMé) ; Université d'Orléans (UO)-Université de Tours (UT)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL) ; Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université d'Orléans (UO)-Université de Tours (UT)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL) ; Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA) ; Nanjing University of Aeronautics and Astronautics Nanjing (NUAA) ; Henan University of Science and Technology |
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Zeitschrift: | ISSN: 0925-8388 ; Journal of Alloys and Compounds ; https://hal.science/hal-02993935 ; Journal of Alloys and Compounds, 2020, 843, pp.156059. ⟨10.1016/j.jallcom.2020.156059⟩, 2020 |
Veröffentlichung: | HAL CCSD ; Elsevier, 2020 |
Medientyp: | academicJournal |
DOI: | 10.1016/j.jallcom.2020.156059 |
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