Corrosion Behavior and Bio-Compatibility of Lotus type Porous Stainless Steels

Abstract

Lotus type porous metals and alloys have various properties including advantages to be applied bio-medical use. Ingot with randomly distributed directionally elongated pores is able to be produced by unidirectional solidification in a pressurized gas atmosphere such as hydrogen and nitrogen. This material exhibits apparently low density without loss of mechanical properties. In this review, corrosion behavior and bio-compatibility of lotus-type porous austenitic stainless steels are described based on the authors' experimental results.