Microstructure and High Temperature Compressive Deformation in Lightweight Open Cell Titanium Foam

2020 ◽  
Author(s):  
Hemant Jain ◽  
D.P. Mondal ◽  
Gaurav Gupta ◽  
Anil Kothari ◽  
Rajeev Kumar ◽  
...  
Keyword(s):  
High Temperature ◽  
Compressive Deformation ◽  
Open Cell ◽  
Titanium Foam

Porous Bioceramics (Open Cell Foams) Expanded in Vacuum

2006 ◽  
Vol 309-311 ◽  
pp. 1023-1026
Author(s):  
E.T. Uzumaki ◽  
C.S. Lambert
Keyword(s):  
Zirconium Oxide ◽  
Cell Structure ◽  
The Body ◽  
Carbon Coatings ◽  
Open Cell ◽  
Glass Foam ◽  
Open Cell Foams ◽  
Titanium Foam ◽  
Porous Bioceramics ◽  
Scanning Electron

In this study, porous bioceramics (titanium foam with diamond-like carbon coatings, glass foam and zirconium oxide foam) were produced using expansion in vacuum. The porosity, the pore size and pore morphology can be adjusted in agreement with the application. The different 3D structures were obtained by varying the parameters of the process. The microstructure and morphology of the porous materials were observed by scanning electron microscopy (SEM) and optical microscopy. The foam exhibit an open-cell structure with interconnected macropores, which provide the potential for tissue ingrowths and the transport of the body fluids.

Stress Relaxation of Sugi (Cryptomeria japonica D.Don) Wood in Radial Compression under High Temperature Steam

Holzforschung ◽  
1999 ◽  
Vol 53 (5) ◽  
pp. 541-546 ◽  
Author(s):  
W. Dwianto ◽  
T. Morooka ◽  
M. Norimoto ◽  
T. Kitajima
Keyword(s):  
High Temperature ◽  
Stress Relaxation ◽  
Cryptomeria Japonica ◽  
Chain Scission ◽  
Strain Recovery ◽  
Crystalline Lattice ◽  
Compressive Deformation ◽  
Radial Compression ◽  
Stress Strain ◽  
Permanent Fixation

Summary To clarify the mechanism of the permanent fixation of compressive deformation of wood by high temperature steaming, stress relaxation and stress-strain relationships in the radial compression for Sugi (Cryptomeria japonica D.Don) wood were measured under steam at temperatures up to 200°C. The stress relaxation curves above 100°C were quite different in shape from those below 100°C, showing a rapid decrease in stress with increasing temperature. In the stress-strain relationships measured above 140°C, the stress reduced as pre-steaming time increased when compared at the same strain. The recovery of compressive deformation (strain recovery) was decreased with steaming time and reached almost 0 in 10 min at 200°C. The relationship between the residual stress and the strain recovery at the end of relaxation measurements could be expressed by a single curve regardless of time and temperature. The permanent fixation of deformation by steaming below 200°C was considered to be due to chain scission of hemicelluloses accompanying a slight cleavage of lignin. In some cases, the increase in regularity of the crystalline lattice space of microfibrils or the formation of crosslinks between the cell wall polymers seemed to play an important role in the permanent fixation of compressive deformation.

scholarly journals Compressive Deformation Characteristics of Open-Cell Mg Alloys with Controlled Cell Structure

2002 ◽  
Vol 43 (6) ◽  
pp. 1298-1305 ◽  
Author(s):  
Yasuo Yamada ◽  
Cui’e Wen ◽  
Koji Shimojima ◽  
Hiroyuki Hosokawa ◽  
Yasumasa Chino ◽  
...  
Keyword(s):  
Cell Structure ◽  
Mg Alloys ◽  
Compressive Deformation ◽  
Deformation Characteristics ◽  
Open Cell

scholarly journals High temperature low vacuum synthesis of a freestanding three-dimensional graphene nano-ribbon foam electrode

2016 ◽  
Vol 4 (7) ◽  
pp. 2617-2629 ◽  
Author(s):  
Dale A. C. Brownson ◽  
Luiz C. S. Figueiredo-Filho ◽  
Bill L. Riehl ◽  
Bonnie D. Riehl ◽  
Maria Gómez-Mingot ◽  
...  
Keyword(s):  
High Temperature ◽  
Electrochemical Properties ◽  
Three Dimensional ◽  
Open Cell ◽  
3D Graphene ◽  
Open Cell Foam ◽  
Cell Foam

A facile high temperature low vacuum process is reported for the synthesis of a freestanding 3D graphene nano-ribbon open cell foam electrode and its electrochemical properties are explored.

Comparison of High-Temperature Compressive Deformation Characteristics of Differently Processed LY12 Aluminum Alloys

2010 ◽  
Vol 667-669 ◽  
pp. 845-849
Author(s):  
Yao Wang ◽  
Qing Wei Jiang ◽  
Ying Wu ◽  
Xiao Wu Li
Keyword(s):  
High Temperature ◽  
Surface Deformation ◽  
Testing Temperature ◽  
Al Alloys ◽  
Compressive Deformation ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Al Alloy ◽  
Damage Characteristics ◽  
Angular Pressing

The individual or joint effects of annealing and equal channel angular pressing (ECAP) treatments on the high-temperature compressive deformation and damage behavior of cast LY12 Al alloys were studied. The compressive deformation behavior and surface deformation and damage characteristics of differently treated LY12 Al alloy samples were examined at temperatures ranging from 25°C to 400°C. It is found that the LY12 Al alloy exhibits different compressive mechanical behavior depending on different treatments, and the compressive deformation and damage characteristics of LY12 Al alloys with different microstructural states are closely related with the testing temperature. As compared to other samples (e.g. as-cast, annealed, as-cast+2ECAPed), the sample annealed at 450°C for 3h followed by ECAPed for 2 passages (i.e. annealed+2ECAPed) shows a better high-temperature deformation stability.

High-temperature compressive deformation of β-SiAlON polycrystals containing minimum amount of intergranular glass phase

2008 ◽  
Vol 148 (1-3) ◽  
pp. 203-206 ◽  
Author(s):  
Kentarou Chihara ◽  
Daisuke Hiratsuka ◽  
Yutaka Shinoda ◽  
Takashi Akatsu ◽  
Fumihiro Wakai ◽  
...  
Keyword(s):  
High Temperature ◽  
Glass Phase ◽  
Compressive Deformation ◽  
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