A promising new class of plasticine: Metallic plasticine

doi:10.1016/j.jmst.2017.06.022

Abstract

Abstract:

Soft, malleable, and non-dry on exposure in air are the typical features for plain plasticine, which lead plasticine to be widely used in many industrial fields and our daily life. As a kind of clay, poorly electric conductivity and thermal conductivity of plain plasticine seriously limit its applications. Therefore, synthesizing a kind of plasticine having metallic bond is of importance for extending its applications in some special cases, such as thermal-cooling medium, anti-static electricity, electromagnetic shielding, etc. Here, we report a novel GaInSnCdZn₂ alloy, which exhibits similar behavior as compared to those of plasticine at near room temperature (30-40 °C), and a good electrical conductivity due to its nature of metal. This new GaInSnCdZn₂ alloy can be called as metallic plasticine that contains the near-eutectic structure with low melting point and the other relatively high melting point phases. In this metallic plasticine, the near-eutectic structure with low melting point plays the same role as the oily ingredient in plain plasticine, dominating the plastic deformation, while the other relatively high melting point phases act as the stuffing like the CaCO3 in plain plasticine. The creation of metallic plasticine offers a general strategy for designing/preparing a new class of plasticine which possesses both the nature of metal and plasticine.

Key words: Metallic plasticine, Alloy design, Conductivity, Microstructure design, Microstructure

Yiping Lu, Zhongyi Tang, Bin Wen, Gang Wang, Shiwei Wu, Tongmin Wang, Yubo Zhang, Zongning Chen, Zhiqiang Cao, Tingju Li. A promising new class of plasticine: Metallic plasticine[J]. J. Mater. Sci. Technol., 2018, 34(2): 344-348.

Figures/Tables 4

Fig. 1. Dalian University of Technology emblems formed by hand stamping on (a) plain plasticine and (b) metallic plasticine (GaInSnCdZn2 alloy) at 30-40 °C, respectively.

Fig. 2. Measured Young's modulus and internal friction for the metallic plasticine at room temperature, compared to experimental Young's modulus and internal friction for Ce-based amorphous metallic plastic, polyvinyl fluoride plastics, conventional crystalline alloys and ceramics.

Fig. 3. Phase and microstructure of the metallic plasticine. (a) XRD pattern of the metallic plasticine at 15 °C; (b) back scattering electron (BSE) image of the as-cast metallic plasticine sample; (c) SEM backscattered electron image of the metallic plasticine; (d), (e), (f), (g) and (h) elemental mappings of Ga, In, Sn, Cd, Zn element, respectively.

Fig. 4. DSC curve of the metallic plasticine during thermal cycle between -20 °C and 300 °C.

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