scholarly journals Effect of Pretreatment on Interface Stability and Morphology of Ni/Al Hybrid Foams by in situ Microcantilever Fracture Experiment

2019 ◽  
Vol 17 ◽  
pp. 206-213
Author(s):  
Jutta Luksch ◽  
Anne Jung ◽  
Christoph Pauly ◽  
Christian Motz ◽  
Frank Mücklich ◽  
...  
Keyword(s):  
Interface Stability ◽  
Hybrid Foams

A thick yet dense silicon anode with enhanced interface stability in lithium storage evidenced by in situ TEM observations

2020 ◽  
Vol 65 (18) ◽  
pp. 1563-1569 ◽  
Author(s):  
Junwei Han ◽  
Dai-Ming Tang ◽  
Debin Kong ◽  
Fanqi Chen ◽  
Jing Xiao ◽  
...  
Keyword(s):  
Silicon Anode ◽  
In Situ Tem ◽  
Lithium Storage ◽  
Interface Stability

scholarly journals Ni/Al-Hybrid Cellular Foams: An Interface Study by Combination of 3D-Phase Morphology Imaging, Microbeam Fracture Mechanics and In Situ Synchrotron Stress Analysis

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3473
Author(s):  
Jutta Luksch ◽  
Anne Jung ◽  
Christoph Pauly ◽  
Ralf Derr ◽  
Patrick Gruenewald ◽  
...  
Keyword(s):  
Focused Ion Beam ◽  
Ion Beam ◽  
Critical Energy ◽  
Absorption Capacity ◽  
Interface Morphology ◽  
Cellular Foams ◽  
In Situ Mechanical Testing ◽  
Pre Treatment ◽  
Hybrid Foams

Nickel(Ni)/aluminium(Al) hybrid foams are Al base foams coated with Ni by electrodeposition. Hybrid foams offer an enhanced energy absorption capacity. To ensure a good adhering Ni coating, necessary for a shear resistant interface, the influence of a chemical pre-treatment of the base foam was investigated by a combination of an interface morphology analysis by focused ion beam (FIB) tomography and in situ mechanical testing. The critical energy for interfacial decohesion from these microbending fracture tests in the scanning electron microscope (SEM) were contrasted to and the results validated by depth-resolved measurements of the evolving stresses in the Ni coating during three-point bending tests at the energy-dispersive diffraction (EDDI) beamline at the synchrotron BESSY II. Such a multi-method assessment of the interface decohesion resistance with respect to the interface morphology provides a reliable investigation strategy for further improvement of the interface morphology.

In-situ and ex-situ microtensile testing of individual struts of Al foams and Ni/Al hybrid foams

2018 ◽  
Vol 153 ◽  
pp. 104-119 ◽  
Author(s):  
A. Jung ◽  
J. Luksch ◽  
S. Diebels ◽  
F. Schäfer ◽  
C. Motz
Keyword(s):  
Ex Situ ◽  
Microtensile Testing ◽  
Hybrid Foams ◽  
Al Foams

Rendez vous with Saturn's rings

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock
Keyword(s):  
Solar Energy ◽  
Electric Propulsion ◽  
Power Source ◽  
Propulsion System ◽  
Low Thrust ◽  
Ring Plane ◽  
The Earth ◽  
Total Impulse ◽  
Saturn's Rings

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.

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