Triple alloys of the Pt-Mo-W system as the thermal decomposition products of complex salts

Authors

Polina Serebrennikova¹ , Varvara Lagunova² , Andrey Zadesenets² , Sergey Gromilov¹

1. Novosibirsk State University; Nikolaev Institute of Inorganic Chemistry
2. Nikolaev Institute of Inorganic Chemistry

Conference / event

8th Asian Symposium on Advanced Materials (ASAM-8), July 2023 (Novosibirsk, Russian Federation)

Poster summary

The co-crystallization of Na2WO42H2O with Na2MoO42H2O and [Pt(NH3)4](NO3)2 from a water solution results in the formation of single-phase [Pt(NH3)4](MoO4)x(WO4)1-x solid solution (x vary in the 0.5-0.6 interval). According to the X-ray diffraction analysis of one single crystal, the parameters of the tetragonal unit cell (space group I41/amd, Z = 4) is: a = 7.4490(3); c = 15.5150(11) Å with the x = 0.592(7). The obvious anisotropy of the crystal thermal behavior is shown: with an overall increase in the volume of the tetragonal unit cell by 1.03%, parameter a increases by 0.67%, while parameter c decreases by 0.32%. The thermal decomposition of [Pt(NH3)4](MoO4)0.6(WO4)0.4 was performed in H2 atmospheres at 1000 °C. The ex situ X-ray and scanning electron microscopy studies of thermal decomposition product shows the formation of single-phase HCP-alloy of Pt0.47Mo0.34W0.19 approximate composition.

Keywords

Complex salts, Single-source precursors, X-ray diffraction, Thermal decomposition, Multicomponent alloy, Refractory alloy

Research areas

Material Sciences

References

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Funding

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Supplemental files

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Additional information

Competing interests

No competing interests were disclosed.

Data availability statement

The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

Creative Commons license

Copyright © 2023 Serebrennikova et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.