Titanium Powder Metallurgy

Titanium Powder Metallurgy

Science, Technology and Applications
2015, Pages 405-423
Titanium Powder Metallurgy

22 - Cold-spray processing of titanium and titanium alloys

https://doi.org/10.1016/B978-0-12-800054-0.00022-8Get rights and content

Abstract

The knowledge base for cold spray has grown significantly in recent years and advances in the technology have shown viability for the process for titanium-based materials. For titanium and its alloys, the capability to rapidly produce thick, unoxidized deposits in open air makes cold spray a particularly attractive process. Here, selected results from the available literature are discussed to highlight key practical and fundamental aspects in cold-spray processing of titanium-base powders. An overview is presented for the general process and its underlying particle deformation and bonding mechanisms. The properties of cold-sprayed titanium material are characterized and process–microstructure–property relationships reviewed. Coating and additive manufacturing applications are then briefly outlined with a discussion of practical considerations. In the concluding remarks, views are offered on the current status and possible future directions of development for the technology.

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    Citation Excerpt :

    However, the natural oxide layer formed on the titanium surface causes titanium to be easily damaged in aggressive environments with applied loads leading to devastating results [2,3]. To cope with these catastrophic results, various surface modification methods such as physical vapor deposition (PVD) [4], laser surface modification (LSM) [5], chemical vapor deposition (CVD) [6], anodizing [7], cold spraying (CS) [8], hot-dip aluminizing (HDA) [9] and micro-arc oxidation (MAO) [10] are applied to titanium and its alloys. Among these methods, MAO stands out by generating a hard, thick, uniform, and wear- and corrosion-resistant coating on titanium surfaces using various MAO parameters (e.g., electrolyte, time, voltage, etc.) [11–13].

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