Article
Construction & Building Technology
L. F. Fan, J. W. Gao, Y. H. Zhang, W. L. Zhong
Summary: In this study, the effects of using artificial geopolymer sand (AGS) as an alternative to natural sand (NS) in cement mortar were investigated. The density and P-wave velocity decrease linearly with increasing replacement ratio, while total porosity increases slowly at first and then rapidly. The smaller pores are more significantly affected by the increase in replacement ratio compared to the larger pores. Strength and elastic modulus initially increase and then decrease with increasing replacement ratio, with a decrease of 11.0% and 5.4% at a replacement ratio of 100%.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Metallurgy & Metallurgical Engineering
Han Ying, Wang Hongshuang, Cao Yundong, An Yuejun, Tan Guoqi, Li Shujun, Liu Zengqian, Zhang Zhefeng
Summary: Cu-W composites with micro-oriented W lamellas showed good mechanical properties and electrical conductivity, outperforming commercial Cu-W composites, making them suitable for electrical contact materials.
ACTA METALLURGICA SINICA
(2021)
Article
Materials Science, Multidisciplinary
Changqing Shu, Zhengjun Yao, Wenbo Du, Xuewei Tao, ShaSha Zhang
Summary: The design and development of new synthetic metal-ceramic composites inspired by natural biology have led to the creation of materials with excellent mechanical properties and wear resistance. In this study, biomimetic micro-laminated structure TiC-CoCrCuFeNi composites with good interfacial binding were prepared and analyzed for their compressive strength, ductility, and wear resistance. The composites exhibited a good balance of strength and ductility, with the wear mechanism primarily being microcracks.
Article
Nanoscience & Nanotechnology
Jun Lu, Shuize Wang, Hao Yu, Guilin Wu, Junheng Gao, Honghui Wu, Haitao Zhao, Chaolei Zhang, Xinping Mao
Summary: The relationship between microstructural evolution and strengthening mechanisms in a vanadium micro-alloyed HSLA martensitic steel was systematically investigated. Precipitation and dislocation strengthening were found to be the main factors causing strength evolution with different isothermal holding time at 600 degrees C. The precipitation strengthening effect of solution quenching specimens was higher than that of isothermal annealing specimens because of its finer particle size and higher volume fraction of the MC precipitates.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Metallurgy & Metallurgical Engineering
Da-wei Ding, Jing Tan, An-hui Cai, Yong Liu, Hong Wu, Qi An, Peng-wei Li, Yan Zhang, Qing Yang
Summary: The study found that Fe-C micro-alloying can improve the glass forming ability and physical and chemical properties of bulk metallic glasses (BMGs), but an increase in Fe and C content within a certain range may lead to a decrease in properties such as hardness.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Nanoscience & Nanotechnology
Zhichao Ma, Zhenfeng Qiang, Chaowei Guo, Yue Jiang, Hongwei Zhao, Cuie Wen, Luquan Ren
Summary: The study found that the micro-mechanical behaviors of adjacent bone lamellae inside a single osteon are influenced by the orientation of collagen fibrils. Spaced micropillars exhibit similar performances, while central micropillars exhibit different behaviors. A small orientation angle of collagen fibrils was verified to enhance the strength, ductility, and stress fluctuation amplitude of micropillars.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Rongyan Tian, Haoyuan Luo, Xiaoming Huang, Yangzezhi Zheng, Leyi Zhu, Fengyang Liu
Summary: The study revealed a strong correlation between the mechanical properties of asphalt and its fraction composition, introducing a new indicator sigma to characterize the degree of asphalt aging, which is strongly correlated with several mechanical performance indicators of asphalt.
Article
Polymer Science
Shiwei Feng, Zhiguo Jiang, Zhaobin Qiu
Summary: Three fully biobased PHFSe copolyesters with different HSe unit contents (10 mol%, 20 mol%, and 30 mol%) were synthesized successfully. The PHFSe copolyesters showed high thermal stability and their thermal and mechanical properties could be easily tuned by changing the HSe unit content.
Review
Engineering, Biomedical
Yu Zhao, Zhi Shou Zhu, Juan Guan, Su Jun Wu
Summary: Hydrogels are versatile materials in biomedical engineering with applications similar to wet tissues. Silk fibroin (SF) is a natural polymer with biocompatibility and tunable biodegradation, but its poor mechanical performance hinders its structural applications. Researchers are exploring strategies to enhance the strength of SF-based hydrogels for biomedical uses.
ACTA BIOMATERIALIA
(2021)
Article
Polymer Science
Feng Bao, Ran Zhang, Zhixin Dong, Fuling Qi, Yanchun Cai, Xuemin Dai, Xiangling Ji, Xuepeng Qiu
Summary: The study investigated the effects of molecular coplanar structure on the performance of polyimide copolymer fibers, finding that higher coplanarity and molecular packing led to increased crystallinity and orientation, resulting in enhanced mechanical properties such as fracture strength and initial modulus.
Article
Electrochemistry
Xun Luo, Chun-Yi Chen, Tso-Fu Mark Chang, Masato Sone, Qiong Zhang, Jinzhu Zhang
Summary: Micro-mechanical properties of electrodeposited cobalt films were investigated through micro-compression tests, revealing the presence of both FCC and HCP crystal structures, as well as nanotwins in the HCP lamellas. The average grain size ranged from 13.8 to 15.4 nm, and the yield strengths of the micro-pillars ranged from 948 to 1075 MPa, approximately double that of bulk cobalt. The high yield strength was attributed to the fine grain size and small sample size used in the compression test, in accordance with the Hall-Petch relationship and the sample size effect.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Materials Science, Ceramics
Haiyan Liu, Nan Wu, Xiaoshan Zhang, Bing Wang, Yingde Wang
Summary: This article reviews the application prospects of micro/nano ceramic fibers in micro/nano devices and thermal insulation components, and proposes that optimizing material systems and processes to enhance their mechanical properties and flexibility is the key direction for future research.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Yan Xu, Weikun Jia, Yudong Zhang, Fangyong Wang, Gang Zhao, Dongyang Zang
Summary: In this paper, Ag-IPMC was prepared using a chemical reduction method on a Nafion-117 membrane with Ag electrode surface coating. The key preparation process and mechanical properties of Ag-IPMC were determined and analyzed, showing the feasibility and purity of the silver coating.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Nanoscience & Nanotechnology
Hongxia Zhong, Chunbao Feng, Hai Wang, Dan Han, Guodong Yu, Wenqi Xiong, Yunhai Li, Mao Yang, Gang Tang, Shengjun Yuan
Summary: Researchers investigated the electronic properties of inorganic antiperovskite nitrides through first-principles calculations, revealing a linear relationship between tolerance factor and various physical quantities, and designed a promising antiperovskite alloy. They also made a comprehensive comparison with conventional halide perovskites to point out the future direction for device applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Polymer Science
Markus Gall, Paul J. Freudenthaler, Joerg Fischer, Reinhold W. Lang
Summary: Efforts towards a circular plastics economy are putting pressure on recycled plastics, especially recycled polyethylene and recycled polypropylene, to enter new markets. A detailed understanding of composition and structure-property relationships of post-consumer recyclates needs to be developed to meet the demands of more circularity.
