Mechanical properties and thermal stability of ultrathin molybdenum nanowires

RSC Advances ◽  
2015 ◽  
Vol 5 (39) ◽  
pp. 31231-31237 ◽  
Author(s):  
Ken-Huang Lin ◽  
Bo-Yuan Liao ◽  
Shin-Pon Ju ◽  
Jenn-Sen Lin ◽  
Jin-Yuan Hsieh

The most stable structures of three ultrathin molybdenum (Mo) nanowires were predicted by the simulated annealing basin-hopping method (SABH) with the penalty algorithm.

RSC Advances ◽  
2016 ◽  
Vol 6 (2) ◽  
pp. 1158-1168 ◽  
Author(s):  
Hui-Lung Chen ◽  
Shin-Pon Ju ◽  
Ken-Huang Lin ◽  
Jia-Yun Li ◽  
Hsin-Tsung Chen

The most stable structure of the thinnest tungsten (W) nanowire with the radius of 1.9 Å was predicted by the simulated annealing basin-hopping method (SABH) with the tight-binding (TB) potential and the penalty algorithm.


Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2903
Author(s):  
Juvenal Giogetti Nemaleu Deutou ◽  
Rodrigue Cyriaque Kaze ◽  
Elie Kamseu ◽  
Vincenzo M. Sglavo

The present project investigated the thermal stability of cold-setting refractory composites under high-temperature cycles. The proposed route dealt with the feasibility of using fillers with different particle sizes and studying their influence on the thermo-mechanical properties of refractory geopolymer composites. The volumetric shrinkage was studied with respect to particle sizes of fillers (80, 200 and 500 µm), treatment temperature (1050–1250 °C) and amount of fillers (70–85 wt.%). The results, combined with thermal analysis, indicated the efficiency of refractory-based kyanite aggregates for enhancing thermo-mechanical properties. At low temperatures, larger amounts of kyanite aggregates promoted mechanical strength development. Flexural strengths of 45, 42 and 40 MPa were obtained for geopolymer samples, respectively, at 1200 °C, made with filler particles sieved at 80, 200 and 500 µm. In addition, a sintering temperature equal to 1200 °C appeared beneficial for the promotion of densification as well as bonding between kyanite aggregates and the matrix, contributing to the reinforcement of the refractory geopolymer composites without any sign of vitrification. From the obtained properties of thermal stability, good densification and high strength, kyanite aggregates are efficient and promising candidates for the production of environmentally friendly, castable refractory composites.


2021 ◽  
Vol 13 (38) ◽  
pp. 45736-45743
Author(s):  
Jian Zhang ◽  
Cheng Zhang ◽  
Ting Zhu ◽  
Yonggao Yan ◽  
Xianli Su ◽  
...  

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