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Effect of Composite-Region Fraction and TiCp Content on the Mechanical Properties of H13 Steel Matrix Composites with Honeycomb Architecture.
Materials (Basel)
March 2025
National and Local Joint Engineering Research Center for Advanced Solidification Forming and Equipment Technology of Metals, Kunming 650093, China.
In order to improve the strength and toughness-matching of metal matrix composites and enhance the mechanical properties of ceramic-reinforced iron matrix composites with a honeycomb architecture, TiCp/H13 steel composites with a honeycomb architecture were successfully prepared using squeeze-infiltration technology, in which the composite region was the honeycomb wall and the steel matrix was the honeycomb core. The effects of the composite-region fraction and TiCp content in the composite region on the compressive mechanical properties of the composites were studied, and the fracture mode and cracking behavior were analyzed. The results show that TiCp was evenly distributed in the composites region, and the interface of TiCp/H13 steel was tightly bonded without obvious defects.
View Article and Find Full Text PDFRealization of 2D metals at the ångström thickness limit.
Nature
March 2025
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, China.
Two-dimensional (2D) metals are appealing for many emergent phenomena and have recently attracted research interests. Unlike the widely studied 2D van der Waals (vdW) layered materials, 2D metals are extremely challenging to achieve, because they are thermodynamically unstable. Here we develop a vdW squeezing method to realize diverse 2D metals (including Bi, Ga, In, Sn and Pb) at the ångström thickness limit.
View Article and Find Full Text PDFStudy on the size and spatial configuration of liquid metal droplets in conductive hydrogels induced by surface acoustic waves.
Lab Chip
February 2025
School of Mathematics, Statistics and Mechanics, Beijing University of Technology, Beijing 100124, People's Republic of China.
Conductive hydrogels based on liquid metal microdroplets are widely used as wearable electronic devices. Droplet uniformity affects sensor sensitivity for weak signals, such as heart rate and pulse rate. Surface acoustic waves at micrometer wavelengths allow precise control of a single droplet, and have the potential to make uniformly discrete liquid metal droplets and distribute them in hydrogels.
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