Abstract
Porous metals are one of promising super-light materials. However, there are currently few applications of porous metals. Advanced porous metals must be developed based on their specific characteristics. In the present work, new horizon of porous metals is discussed from the viewpoint of microarchitecture. Weigh reduction is one of main targets for porous metals, but it cannot be attained only by replacement of conventional materials with porous metals and special use of porous metals is required for weight reduction. For special use, important is microarchitecture control such as pore refinement. Also, an artificial bone requires microarchitecture control of the pore size of about 200 μm and the low elastic modulus fitting a living body. Besides, the importance of microarchitecture control is shown for an acoustic absorbent material and a microchannel.
