Results 51 to 60 of about 725,174 (276)

Analysis of Gap Formation in the Casting of Energetic Materials [PDF]

, 2007
The problem of undesirable separation of the cast material from the mold in the casting of energetic materials is investigated. Comprehensive models are developed to simulate the heat and mass transfer processes during melt casting of energetic materials,
Singh, S. K., Sun, D., Annapragada, S. R., Garimella, S V   +3 more
core   +1 more source

Evolution of microstructure and properties during homogenization of the novel Al–Li alloy fabricated by electromagnetic oscillation twin-roll casting

Journal of Materials Research and Technology, 2020
As a new non-traditional method of alloy preparation, the electromagnetic twin-roll casting (ETRC) technology overcomes the defects of traditional technologies in the preparation of traditional aluminum alloy, especially Al–Li alloy, such as gas hole in ...
Shiju Li, Bowen Wei, Chuang Yu, Yang Li, Guangming Xu, Yong Li   +5 more
doaj   +1 more source

Analysis of defects in a twin roll cast Mg‐Y‐Zn magnesium alloy

Engineering Reports, 2022
Twin roll casting (TRC) enables the production of magnesium strips in an economic manner. TRC has enormous potential for the production of thin strip material from magnesium alloys. However, a range of defects may arise during casting.
Kristina Kittner, Madlen Ullmann, Falko Arndt, Susanne Berndorf, Thorsten Henseler, Ulrich Prahl   +5 more
doaj   +1 more source

Disentangling Bulk and Surface Contributions to Charge and Discharge Fading in High‐Voltage LiCoO2

Advanced Functional Materials, EarlyView.
High‐voltage operation of LiCoO2 accelerates capacity fading through bulk and surface degradation. By introducing a LiTaO3 coating to selectively suppress surface degradation, bulk and surface contributions to charge and discharge fading are decoupled.
Hyungjoon Moon, Sangbin Park, Jaewoo Jung, Seongeun Lee, Chanwoo Jung, Min‐Sik Park, Won‐Sub Yoon   +6 more
wiley   +1 more source

Alleviating segregation and enhancing tensile properties of Inconel 718 superalloy by twin-roll casting and two-stage cold rolling

Journal of Materials Research and Technology, 2022
A novel processing route involving twin-roll casting and two-stage cold rolling was proposed to manufacture Inconel 718 alloy. Due to the sub-rapid solidification rate (412.5 °C/s) of as-cast strip, the element segregation can be alleviated and the ...
Rong Ran, Yang Wang, Yuan-xiang Zhang, Feng Fang, Yu-kun Xia, Wei-na Zhang, Guo Yuan, Guo-dong Wang   +7 more
doaj   +1 more source

2D Co‐Assembly of Solid Acids Enables Stable Superprotonic Conduction Above 260°C

Advanced Functional Materials, EarlyView.
A two‐dimensional co‐assembly strategy integrates antimony phosphate and phosphotungstic acid nanosheets into free‐standing inorganic lamellar membranes with confined acid–acid interfaces. The resulting interfacial hydrogen‐bond network enables anhydrous proton conductivity exceeding 0.1 S cm−1 at 260°C and supports stable high‐temperature fuel‐cell ...
Qiuning Li, Kaiqiang He, Dehua Dong, Fanmengjing Wang, Xiangcheng Liu, Zhikao Li, Jacek J. Jasieniak, Paul A. Webley, Huanting Wang   +8 more
wiley   +1 more source

Effect of low cast-rolling speeds on the microstructure and mechanical properties of twin-roll casting high Mg AA5059 alloy sheets

Journal of Materials Research and Technology, 2022
This study was undertaken to investigate the effect of low cast-rolling speeds (
Jinyu Fu, Jiujian Xu, Jingyu Zhang, Guangming Xu, Yong Li, Zhaodong Wang   +5 more
doaj   +1 more source

Balancing Hydrophobicity and Hydrophilicity: Dual Filler‐Engineered Proton Exchange Membranes for Durable, High‐Power Fuel Cells

Advanced Functional Materials, EarlyView.
Polarity‐matched Zr–MOFs program Nafion's nanoscale morphology during solution casting. Hydrophilic UiO‐66 preserves hydrated pathways, while hydrophobic UiO‐67 increases the proton hopping sites by densifying ionic clusters. Combining both fillers yields a membrane that delivers 176 mS cm−1 conductivity, reaches 1.46 W cm−2 under 200 kPa, and triples ...
Yonghwi Cho, Yunseong Ji, Minkyu Choi, Junsu Kim, Yejin Kim, Su Jeong Lee, Wooyoung Choi, Choong Hoo Lee, Ju Yeon Kim, Ohchan Kwon, Hanim Kim, Du Yeol Ryu, Ki Chul Kim, Dae Woo Kim   +13 more
wiley   +1 more source

Casting of Al-1%Si Strip Using Single-Roll Caster Equipped with Scraper

Metals
The high-speed, low-load twin-roll casting of Al-Si alloys with a Si content of approximately 1 at% is needed to prevent the occurrence of cracks.
Toshio Haga, Hirofumi Sakaue
doaj   +1 more source

Sky‐Directional Radiative Cooling Meta‐Films for Daylighting Windows

Advanced Functional Materials, EarlyView.
A geometry‐mediated microprism meta‐film enables transparent, sky‐directional radiative cooling for daylighting windows. By decoupling control of visible transmittance from mid‐infrared emissivity, ground‐emitted heat absorption is suppressed while skyward heat dissipation is enhanced.
Seung‐Ah Yu, Jae‐Hyun Kim, Jinming He, Gumin Kang, Hyungduk Ko, Do‐hyun Koo, Run Hu, Sun‐Kyung Kim   +7 more
wiley   +1 more source