Study on the sintering properties of Mo–La2O3 nano-powders prepared by solution combustion method
Molybdenum (Mo) precursor powders doped by lanthanum oxides (La2O3) were prepared by the ultra-rapid solution combustion synthesis method using the low-cost and non-toxic starting materials, and the precursor powders were reduced and sintered. The effect of La2O3 doping content (mass fraction) on th...
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Editorial Office of Powder Metallurgy Technology
2021-06-01
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| Series: | Fenmo yejin jishu |
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| Online Access: | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2021020009 |
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| author | CHEN Peng-qi TAI Yun-xiao CHENG Ji-gui |
| author_facet | CHEN Peng-qi TAI Yun-xiao CHENG Ji-gui |
| author_sort | CHEN Peng-qi |
| collection | DOAJ |
| description | Molybdenum (Mo) precursor powders doped by lanthanum oxides (La2O3) were prepared by the ultra-rapid solution combustion synthesis method using the low-cost and non-toxic starting materials, and the precursor powders were reduced and sintered. The effect of La2O3 doping content (mass fraction) on the properties of Mo–La2O3 alloys was studied. The results show that, the La2O3 doped molybdenum powders with the average particle size of 100~220 nm are obtained by the reduction of the combustion precursor in the hydrogen atmosphere at 700 ℃. The relative density of La2O3 doped molybdenum alloys sintered at 1600 ℃ is over 95%. With the increase of La2O3 doping content (mass fraction in the range of 0~1.0%), the microhardness increases firstly and then decreases. When the La2O3 doping content is 0.7%, the grain size of Mo is about 500 nm, and the microhardness of the materials reaches the highest as HV0.2 564. |
| format | Article |
| id | doaj-art-8efb2eb701b94f0e964794dd0f6181cd |
| institution | DOAJ |
| issn | 1001-3784 |
| language | zho |
| publishDate | 2021-06-01 |
| publisher | Editorial Office of Powder Metallurgy Technology |
| record_format | Article |
| series | Fenmo yejin jishu |
| spelling | doaj-art-8efb2eb701b94f0e964794dd0f6181cd2025-08-20T02:50:25ZzhoEditorial Office of Powder Metallurgy TechnologyFenmo yejin jishu1001-37842021-06-0139320320810.19591/j.cnki.cn11-1974/tf.2021020009Study on the sintering properties of Mo–La2O3 nano-powders prepared by solution combustion methodCHEN Peng-qiTAI Yun-xiaoCHENG Ji-guiMolybdenum (Mo) precursor powders doped by lanthanum oxides (La2O3) were prepared by the ultra-rapid solution combustion synthesis method using the low-cost and non-toxic starting materials, and the precursor powders were reduced and sintered. The effect of La2O3 doping content (mass fraction) on the properties of Mo–La2O3 alloys was studied. The results show that, the La2O3 doped molybdenum powders with the average particle size of 100~220 nm are obtained by the reduction of the combustion precursor in the hydrogen atmosphere at 700 ℃. The relative density of La2O3 doped molybdenum alloys sintered at 1600 ℃ is over 95%. With the increase of La2O3 doping content (mass fraction in the range of 0~1.0%), the microhardness increases firstly and then decreases. When the La2O3 doping content is 0.7%, the grain size of Mo is about 500 nm, and the microhardness of the materials reaches the highest as HV0.2 564.https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2021020009solution combustion synthesisnano-powdersmolybdenum alloysoxide dispersion strengthenmicrohardness |
| spellingShingle | CHEN Peng-qi TAI Yun-xiao CHENG Ji-gui Study on the sintering properties of Mo–La2O3 nano-powders prepared by solution combustion method Fenmo yejin jishu solution combustion synthesis nano-powders molybdenum alloys oxide dispersion strengthen microhardness |
| title | Study on the sintering properties of Mo–La2O3 nano-powders prepared by solution combustion method |
| title_full | Study on the sintering properties of Mo–La2O3 nano-powders prepared by solution combustion method |
| title_fullStr | Study on the sintering properties of Mo–La2O3 nano-powders prepared by solution combustion method |
| title_full_unstemmed | Study on the sintering properties of Mo–La2O3 nano-powders prepared by solution combustion method |
| title_short | Study on the sintering properties of Mo–La2O3 nano-powders prepared by solution combustion method |
| title_sort | study on the sintering properties of mo la2o3 nano powders prepared by solution combustion method |
| topic | solution combustion synthesis nano-powders molybdenum alloys oxide dispersion strengthen microhardness |
| url | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2021020009 |
| work_keys_str_mv | AT chenpengqi studyonthesinteringpropertiesofmola2o3nanopowderspreparedbysolutioncombustionmethod AT taiyunxiao studyonthesinteringpropertiesofmola2o3nanopowderspreparedbysolutioncombustionmethod AT chengjigui studyonthesinteringpropertiesofmola2o3nanopowderspreparedbysolutioncombustionmethod |