Corrosion studies of additive manufactured lattice architectures

The research provides an analysis of the corrosion of additive manufactured metallic lattice structures. Additive manufacturing provides an opportunity to generate complex lattice geometries such as strut based, surface based and shell based. These types of lattice structures provide immense potential for applications from implants to biomedical devices and components of aircraft. The paper delves into details of factors like corrosion-resistant properties of thin protective film on metallic surfaces and localized corrosion mechanisms of pits. In addition to these factors, the role of galvanic corrosion in various domains of metallic lattice structures has been discussed. The role of lattice structure design on corrosion properties has been discussed. Geometry parameters like relative density and cell size determine electrolyte flow patterns. The influence of strut and cell size on ion movement in electrolytes makes it evident that there is an important balance to be achieved for an additive manufacturing component to possess high strength as well as high corrosion-resistant properties. Additional processing and application of coatings on surfaces of metallic components improve corrosion-resistant properties. These techniques improve the strength of the biofilm on metallic surfaces by eliminating surface irregularities that act as primary corrosion site domains.