February 5, 2024 | Ahmed Hassan and Ibrahim Abdullah Alnaser
This review article provides a comprehensive overview of the various manufacturing methods for metallic foams, highlighting their industrial applications and unique properties. Metallic foams are lightweight and porous materials that offer advantages in weight reduction and specific applications such as aerospace, automotive, and construction. The fabrication methods discussed include liquid metallurgy, powder metallurgy, and metal vapor deposition. Each method has its own advantages and challenges, with liquid metallurgy being cost-effective and easy to produce, while powder metallurgy offers uniform morphology but is more complex and expensive. Additive manufacturing, particularly selective laser melting and electron beam melting, is emerging as a promising technique for creating intricate 3D shapes and customizing material characteristics. The review also explores the morphological variations of metallic foams, including open-cell and closed-cell structures, and discusses the factors affecting their properties. The article concludes by emphasizing the ongoing advancements in metallic foam technology and the need for cost-effective and efficient production methods to expand their industrial applications.This review article provides a comprehensive overview of the various manufacturing methods for metallic foams, highlighting their industrial applications and unique properties. Metallic foams are lightweight and porous materials that offer advantages in weight reduction and specific applications such as aerospace, automotive, and construction. The fabrication methods discussed include liquid metallurgy, powder metallurgy, and metal vapor deposition. Each method has its own advantages and challenges, with liquid metallurgy being cost-effective and easy to produce, while powder metallurgy offers uniform morphology but is more complex and expensive. Additive manufacturing, particularly selective laser melting and electron beam melting, is emerging as a promising technique for creating intricate 3D shapes and customizing material characteristics. The review also explores the morphological variations of metallic foams, including open-cell and closed-cell structures, and discusses the factors affecting their properties. The article concludes by emphasizing the ongoing advancements in metallic foam technology and the need for cost-effective and efficient production methods to expand their industrial applications.