Simulation and Experiments of Cold Spray Additive Manufacturing

Dear Colleagues,

Cold spraying (CS) is a new generation of solid-state material deposition techniques that were developed in the mid-1980s. During a CS deposition process, micron-size particles are accelerated to reach a critical velocity up to 1500 m/s by using high-pressure gas. Then, these particles impact onto a substrate to form a coating, which remains at a solid state during the complete deposition process.

Additive manufacturing (AM) technology (also known as rapid prototyping or 3D printing), considered the first manufacturing revolution of the 21st century, refers to the computer-controlled process of stacking successive layers of materials to form 3D objects.

Cold spraying, as an emerging additive manufacturing process, has attracted more and more attention and has been promoted to fabricate freestanding metal components in recent years. Due to the unique characteristics of cold spraying technology, CSAM provides diverse advantages such as rapidity, density, low-oxidation, multi-material composition, etc. However, some obvious limits including porosity, residual stresses, geometric resolution as well as deposition efficiency prevent further applications. Many pieces of research are devoted to overcoming these technical limitations, from fundamental principles, modeling and simulation, robot trajectory planning to experimental optimization.

This Special Issue of Metals aims to present recent studies on "Simulation and Experiments of Cold Spray Additive Manufacturing".

Dr. Sihao Deng
Guest Editor

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