Review of cold spraying and its use for metallic glass coatings

ABSTRACT

Cold spraying (CS), a solid-state spraying technology, is expected to become an appropriate supplementary for traditional spraying methods owing to its plenty of merits such as high deposition efficiency, low temperature and little influence on the particles/substrate. The most reported researches are bulk alloys fabricated by CS. However, the systematic introduction and cold-sprayed metallic glass coatings have not been summarised. Therefore, in this paper, the international research status of CS including equipment structure, spraying process and parameters, advantages and disadvantages, deposit features and bonding mechanism were introduced. By using this technology, the successful researches about Fe-, Al-, Ni-, Cu- and Zr- based amorphous alloy coatings are reported. To overcome the limitations, further development and solutions were proposed.

KEYWORDS:

• Cold spraying
• deposit mechanisms
• spraying parameters
• metallic glass coatings
• advantages and disadvantages
• Reynold number theory
• homogeneous and inhomogeneous deformation
• Newtonian and non-Newtonian flow

ORCID

Jia-jie Kang http://orcid.org/0000-0002-8873-3684

Additional information

Funding

This work was supported by the National Natural Science Foundation of China: [grant number 41772389]; National Natural Science Foundation of China: [grant number 41872183]; Joint Fund of Ministry of Education for Pre-research of Equipment for Young Personnel Project: [grant number 6141A02033120]; the Pre-Research Program in National 13th Five-Year Plan: [grant number 61409230603]; and National Key Technologies R&D Program of China: [grant number 2018YFC0603403].