Improved Mechanical Properties of Nano-nickel Strengthened Open Cell Metal Foams

2011 ◽  
pp. 83-87 ◽  
Author(s):  
Anne Jung ◽  
Harald Natter ◽  
Rolf Hempelmann ◽  
Stefan Diebels ◽  
Erhardt Lach
Keyword(s):  
Mechanical Properties ◽  
Metal Foams ◽  
Open Cell ◽  
Nano Nickel

Electrodeposition of Nanocrystalline Metals on Open Cell Metal Foams: Improved Mechanical Properties

2019 ◽  
Vol 25 (41) ◽  
pp. 165-172 ◽  
Author(s):  
Anne Jung ◽  
Harald Natter ◽  
Rolf Hempelmann ◽  
Stefan Diebels ◽  
Michael R. Koblischka ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Metal Foams ◽  
Nanocrystalline Metals ◽  
Open Cell

Synthesis of open-cell metal foams by templated directed vapor deposition

2001 ◽  
Vol 16 (4) ◽  
pp. 1028-1036 ◽  
Author(s):  
Douglas T. Queheillalt ◽  
Derek D. Hass ◽  
David J. Sypeck ◽  
Haydn N. G. Wadley
Keyword(s):  
Mechanical Properties ◽  
Electron Beam ◽  
Vapor Deposition ◽  
Transient Liquid Phase ◽  
Deposition Process ◽  
Metal Foams ◽  
Liquid Phase Sintering ◽  
Polymer Foam ◽  
Open Cell ◽  
Directed Vapor Deposition

Low-density, open-cell nickel base superalloy foams have been synthesized by a high-rate, electron beam-directed vapor deposition process and their mechanical properties evaluated. The deposition process uses an open-cell polymer foam template upon which is deposited a metal alloy coating. The electron beam evaporated flux was entrained in a rarefied transonic gas jet and propagated along the flow stream lines through the polymer structure. After vapor deposition, the polymer template was removed by low-temperature thermal decomposition. The resultant ultralightweight metal foams consisted of a three-dimensional open cell, reticulated structure possessing hollow triangular ligaments with relative densities of <3%. Their mechanical integrity was increased by either pressureless or transient liquid phase sintering. The mechanical properties of these ultralightweight metal foams were comparable to theoretical predictions for open-cell, reticulated foams.

3D NUMERICAL INVESTIGATION OF FLUID FLOW THROUGH OPEN-CELL METAL FOAMS USING MICRO-TOMOGRAPHY IMAGES

2014 ◽  
Vol 17 (11) ◽  
pp. 1019-1029 ◽  
Author(s):  
Mohammad Zafari ◽  
Masoud Panjepour ◽  
Mohsen Davazdah Emami ◽  
Mahmood Meratian
Keyword(s):  
Fluid Flow ◽  
Numerical Investigation ◽  
Metal Foams ◽  
Open Cell ◽  
Flow Through ◽  
Micro Tomography

MICROSTRUCTURE AND MECHANICAL BEHAVIOR OF AMORPHOUS Al–Cu–Ti METAL FOAMS SYNTHESIZED BY SPARK PLASMA SINTERING

2017 ◽  
Vol 24 (Supp02) ◽  
pp. 1850022
Author(s):  
MAOYUAN LI ◽  
LIN LU ◽  
ZHEN DAI ◽  
YIQIANG HONG ◽  
WEIWEI CHEN ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Behavior ◽  
Intermetallic Compounds ◽  
Spark Plasma Sintering ◽  
Elevated Temperatures ◽  
Volume Fraction ◽  
Metal Foams ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Xrd Patterns

Amorphous Al–Cu–Ti metal foams were prepared by spark plasma sintering (SPS) process with the diameter of 10[Formula: see text]mm. The SPS process was conducted at the pressure of 200 and 300[Formula: see text]MPa with the temperature of 653–723[Formula: see text]K, respectively. NaCl was used as the space-holder, forming almost separated pores with the porosity of 65 vol%. The microstructure and mechanical behavior of the amorphous Al–Cu–Ti metal foams were systematically investigated. The results show that the crystallinity increased at elevated temperatures. The effect of pressure and holding time on the crystallization was almost negligible. The intermetallic compounds, i.e. Al–Ti, Al–Cu and Al–Cu–Ti were identified from X-ray diffraction (XRD) patterns. It was found that weak adhesion and brittle intermetallic compounds reduced the mechanical properties, while lower volume fraction and smaller size of NaCl powders improved the mechanical properties.

CuZnAl Shape Memory Alloys Foams

2012 ◽  
Vol 78 ◽  
pp. 31-39 ◽  
Author(s):  
Ausonio Tuissi ◽  
Paola Bassani ◽  
Carlo Alberto Biffi
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Physical And Mechanical Properties ◽  
Metal Foams ◽  
Cellular Structures ◽  
Metallic Materials ◽  
Open Cell ◽  
Liquid Infiltration ◽  
Highly Porous ◽  
Metal Infiltration

Foams and other highly porous metallic materials with cellular structures are known to have many interesting combinations of physical and mechanical properties. That makes these systems very attractive for both structural and functional applications. Cellular metals can be produced by several methods including liquid infiltration of leachable space holders. In this contribution, results on metal foams of Cu based shape memory alloys (SMAs) processed by molten metal infiltration of SiO2 particles are presented. By using this route, highly homogeneous CuZnAl SMA foams with a spherical open-cell morphologies have been manufactured and tested. Morphological, thermo-mechanical and cycling results are reported.

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