On the minimum oxygen impurity content in tungsten powders

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

A theoretical assessment of the minimum oxygen content in tungsten powder was carried out and compared with experimental results for passivated powder. The assumption of particles being spherical in size and distributed according to a lognormal law was used. Using this method, the thickness of the oxide layer in tungsten powders recovered at temperatures of 650, 800 and 950 °С (and with average size 1.53, 2.26 and 4.54 μm) was estimated and it turns out to be much larger than the monomolecular layer: 50, 10, 5 nm, respectively.

Толық мәтін

Рұқсат жабық

Авторлар туралы

M. Alymov

Merzhanov Institute of Structural Macrokinetics and Materials Science of the Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: alymov.mi@gmail.com

Corresponding Member of the RAS

Ресей, Chernogolovka, Moscow Region

S. Rogachev

Merzhanov Institute of Structural Macrokinetics and Materials Science of the Russian Academy of Sciences

Email: rogachevsa@gmail.com
Ресей, Chernogolovka, Moscow Region

A. Ankudinov

Merzhanov Institute of Structural Macrokinetics and Materials Science of the Russian Academy of Sciences

Email: alymov.mi@gmail.com
Ресей, Chernogolovka, Moscow Region

A. Samokhin

Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences

Email: alymov.mi@gmail.com
Ресей, Moscow

Әдебиет тізімі

  1. Wriedt H.A. The O-W (oxygen-tungsten) system // Bull. Alloy Phase Diagrams. 1989. № 10. Р. 368–384. https://doi.org/10.1007/BF02877593
  2. Кубашевски О. Диаграммы состояния двойных систем на основе железа: Справочник / Пер. с англ. Л. М. Бернштейна; под ред. Л. А. Петровой. М.: Металлургия, 1985. 183 с.
  3. Skotnicova K., Kirillova V., Ermishkin V. et al. Influence of alloying and testing conditions on mechanical properties and deformation behavior of <100> tungsten-based single crystals // Materials Science and Engineering. 2015. V. 636. P. 536–542. https://doi.org/10.1016/j.msea.2015.03.126
  4. Galiev F. F., Saikov I. V., Berbentsev V. D. et al. Mechanical Properties of Composite Rods Produced by Hot Gas Extrusion of the Nickel and Aluminum Powder Mixtures in a Steel Shell // Inorganic Materials: Applied Research. 2024. V. 15. P. 772–778.https://doi.org/10.1134/S2075113324700205
  5. Алымов М.И., Рубцов Н.М., Сеплярский Б.С. и др. Получение и исследование наночастиц железа, защищенных оксидной пленкой // Неорганические материалы. 2017. Т. 53. № 9. С. 929–933. https://doi.org/10.7868/S0002337X17090044
  6. Martin J.E., Herzing A.A., Yan W. et al. Determination of the oxide layer thickness in core-shell zerovalent iron nanoparticles // Langmuir. 2008. V. 24. P. 4329–4334. https://doi.org/10.1021/la703689k
  7. Jeong S., Woo K., Kim D. et al. Controlling the thickness of the surface oxide layer on Cu nanoparticles for the fabrication of conductive structures by ink-jet printing // Advanced Functional Materials. 2008. V. 18. P. 679–686. https://doi.org/10.1002/adfm.200700902
  8. Raza A., Schwerz C., Pauzon C. et al. Effect of layer thickness on spatters oxidation of Hastelloy X alloy during powder bed fusion-laser beam processing // Powder Technology. 2023. V. 422. 118461. https://doi.org/10.1016/j.powtec.2023.118461
  9. Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill handbooks, 2003. ISBN0-07-049439-8.

Қосымша файлдар

Қосымша файлдар
Әрекет
1. JATS XML
Жүктеу
2. Fig. 1. Scheme of a retort for powder recovery.

Жүктеу (72KB)
Метадеректер
3. Fig. 2. Distribution of tungsten particles by size: dotted lines – experimental data, solid lines – approximation by lognormal distribution: recovery at a temperature of 650 °C (curve 1), at 800 °C (curve 2), at 950 °C (curve 3).

Жүктеу (38KB)
Метадеректер
4. Fig. 3. X-ray diffraction patterns of tungsten powders reduced at temperatures of 650, 800 and 950 °C.

Жүктеу (34KB)
Метадеректер
5. Fig. 4. SEM images of reduced tungsten powders: reduction at 650 (a), 800 (b) and 950 °C (c).

Жүктеу (73KB)
Метадеректер
6. Fig. 5. Calculated oxygen content depending on the thickness of the oxide layer on the particles of reduced tungsten powders: reduction at 650 (curve 1); 800 (curve 2); 950 °C (curve 3).

Жүктеу (40KB)
Метадеректер
7. Fig. 6. Cumulative curves of oxygen accumulation by fractions: recovery at 650 (curve 1), 800 (curve 2), 950 °C (curve 3).

Жүктеу (39KB)
Метадеректер

© Russian Academy of Sciences, 2025