Understanding cold spray technology for hydroxyapatite deposition

Journal of Electrochemical Science and Engineering

article

Gaurav Prashar¹  Hitesh Vasudev¹ 

[1] Department of Mechanical Engineering, Rayat Bahra Institute of Engineering and Nanotechnology

关键词: Cold spraying;    high velocity oxygen fuel spraying;    plasma spraying;    hydroxyapatite coatings;   

DOI  :  10.5599/jese.1424

学科分类：内科医学

来源: International Association of Physical Chemists (IAPC)

【 摘 要 】

The standard method for applying hydroxyapatite (HAp) coatings to biomedical implants is plasma spraying. However, due to the high temperature of the plasma, these coatings frequently experience negative effects like evaporation, phase change, de-bonding, gas release, and residual stresses. This paper summarizes a revolutionary technique known as a cold spray (CS), which allows HAp coatings to be applied at temperatures well below their melting point. CS has several advantages over conventional high-temperature technologies, and it seems to be approaching parity with other older methods. When applied using the CS approach, the HAp coatings enhance bioactivity, increase corrosion resistance, and main­tain the characteristics of calcium phosphate ceramics. This study aims to give a concise and comprehensive overview of HAp-based materials, including substituted-HAp and HAp/poly­mer composites, and their applications in bone tissue engineering. To better understand the advantages of CS technology, a comparison of CS, high-velocity oxy-fuel (HVOF), and plasma spray is given at the end. The perspective and difficulties were also highlighted.

【 授权许可】

CC BY