Change in properties of diffusion-hardening solder in dependence on the composition of the liquid metal component
V.M. Skachkov
The Institute of Solid State Chemistry of the Ural Branch of RAS
DOI: 10.26456/pcascnn/2021.13.788
Original article
Abstract: The article discusses the change in the properties of diffusion-hardening solder in dependence on the composition of the liquid metal component based on low-melting gallium alloys: gallium-tin, gallium-indium-tin and gallium-tin-zinc when interacting with the Spherical copper-tin alloy powder (SCTAP5) subjected to low-temperature (125°С) and high-temperature (500°С) heat treatment. The mechanical properties were evaluated by measuring the microhardness, and the thermal properties were studied by differential thermal analysis. Heat treatment at high temperatures promotes the transition of the solder to an equilibrium state, with a significant increase in hardness. The thermal effects of heat treatment of diffusion-hardening solders are calculated and compared. The phases formed as a result of hardening are determined by X-ray phase analysis. It is shown that different phases and nanoscale intermetallic compounds are formed at different processing temperatures. The improvement of the mechanical properties of diffusion-hardening solder in the presence of zinc dissolved in a gallium liquid alloy has been experimentally proved.
Keywords: composite diffusion-hardening solders, exothermic effects, properties, microhardness, differential thermal analysis, X-ray phase analysis
- Vladimir M. Skachkov – Ph. D., Senior Researcher, Laboratory of Heterogeneous Processes, The Institute of Solid State Chemistry of the Ural Branch of RAS
Reference:
Skachkov, V.M. Change in properties of diffusion-hardening solder in dependence on the composition of the liquid metal component / V.M. Skachkov // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2021. — I. 13. — P. 788-795. DOI: 10.26456/pcascnn/2021.13.788. (In Russian).
Full article (in Russian): download PDF file
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