Porous Metals with Directional Pores

1. Introduction

2. Various fabrication methods of cellular metals and foamed metals

2.1 Materials definitions

2.2 Various fabrication methods

3. Fabrication methods of porous metals with directional pores

3.1 Historical background

3.2 Mold casting technique

3.3 Continuous zone melting technique

3.4 Continuous casting technique

4. Nucleation and growth mechanism of pores in metals

4.1 Pore nucleation

4.2 Pore growth

4.3 Model experiment on unidirectional solidification of water containing carbon dioxide

5. Control of pore size and porosity in lotus-type porous metals

5.1 Control of pore size by solidification velocity

5.2 Control of pore size and porosity by ambient gas pressure

6. Details of fabrication techniques of various lotus metals and alloys, intermetallic compounds, semiconductors and ceramics using various dissolving gases or moisture

6.1 Fabrication of lotus iron by nitrogen

6.2 Fabrication of lotus silver by oxygen

6.3 Fabrication of lotus nickel by moisture

6.4 Fabrication of lotus intermetallic compounds

6.5 Fabrication of lotus semiconductors

6.6 Fabrication of lotus ceramics

6.7 Fabrication of lotus brass by solid state diffusion

6.8 Effect of microstructure on pore morphology on lotus magnesium alloys

7. Mechanical properties of lotus metals and alloys

7.1 Elastic properties

7.2 Internal friction

7.3 Tensile strength

7.4 Compressive strength  

7.4.1 Compressive yield strength

7.4.2 Energy absorption

7.5 Bending strength

7.6 Fatigue strength

8. Various physical properties of lotus metals and alloys

8.1 Sound absorption

8.2 Thermal conductivity  

8.2.1 Measurement of effective thermal conductivity of lotus copper  

8.2.2 Analysis of effective thermal conductivity of lotus copper

8.3 Electrical conductivity  

8.3.1 Measurement of electrical conductivity of lotus nickel  

8.3.2 Analysis of electrical conductivity of lotus

Hideo Nakajima, Professor at The Institute of Scientific and Industrial Research, Osaka University.