Titanium Foam

Titanium foam is a low-density permeable material with high specific strength, high energy absorption, excellent corrosion resistance and biocompatibility. Unlike aluminum foams. Titanium foams cannot easily be produced in the liquid state, due to the high melting temperature and extreme contamination susceptibility of titanium. All existing processes are based on powder metallurgy and be classified into two groups: i) powder sintering process, and ii) pressurized pore expansion process.

Basic Parameters

Note: The other sizes can be manufactured in accordance with the clients' request.

Special Properties

• Sound absorption—The porous structure has a wide frequency of sound absorption. the sound absorption coefficient is also measured in 200−6300Hz, the first resonant frequency occurs at about 4000 Hz, and the sound absorption coefficient reaches up to 0.9.
• Electron wave shielding—Shields electron waves of around 90dB through a relatively thin thickness.
• Heat resistance—Can be used normally below 250℃.
• Thermal conductivity—Porosity samples with pore sizes ranging from 1 mm to 3 mm and sizes ranging from 87% to 89%, the thermal conductivity at room temperature is approximately 0.4~0.8 W/(m∙K).
• Chemical stability—High resistance to acid and alkali corrosion (pH2-12), and anti-oxidation performance.
• Others—It is non-magnetic, non-toxic, and has good compatibility with human tissues and blood.

Applications

Due to its outstanding mechanical properties, low density and high chemical resistance, titanium foam is a very environmentally friendly and promising new material which has a wide range of functions, such as in battery and supercapacitor, medical area, filter material, aerospace area, etc.

Fig. 1 (a) applications in battery and supercapacitor, (b) applications in medical area,
(c) applications in filter material, (d) applications in aerospace area.

• Battery and Supercapacitor

Compared with copper and nickel foams, titanium foam has better corrosion resistance to electrolytes. It is used as substrate for in-situ growth of hierarchical electrode material which is beneficial from its porous structure.

• Medical Area

Compared with solid titanium, titanium foam has a lower stiffness, and compared with brittle ceramic material, it has a higher ductility, thus, significant progress has been made toward the development of titanium foams, or porous titanium scaffolds, for orthopedic and dental applications.

• Filter Material

An inherent resistance to corrosion allows titanium foam to be a desirable candidate for various filtering applications. For example, i) decarburization filtration of the concentrated distribution in the pharmaceutical industry, and security filtration before terminal filtration in the diluted distribution, ii) raw material decarburization and fine filtration in the production process of APIs, iii) clarification and filtration in food and beverage processing, iv) decarbonization filtration and precision filtration in the chemical industry, etc.

• Aerospace Area

Due to its advantages, such as light weight, excellent heat resistance, high chemical resistance, and excellent galvanic compatibility, titanium foam can be used in aerospace area by replacing the existing materials (aluminum and nickel-based alloys and steels).

Alfa Chemistry is a leading manufacturer of titanium foams. The other sizes can be manufactured in accordance with the clients' request. To place an order or request a quote, please don't hesitate to contact us.