Zn, Zn-Al and Zn-Mg coatings have been produced by cold spraying. By careful tuning alloy compositions and spray conditions, dense coatings are produced with a hardness of 200 HV0.01 that are up to four times harder than pure bulk Zn, thus meeting the requirements for print applications. These new developments open opportunities for producing harder and more wear resistant coatings, which may allow for the production of larger number of copies without compromising quality.

Microplasma spraying process provides deposition of coatings on small sizes parts and components. An investigation into the process of production and properties of microplasma coatings from bioactive ceramics (hydroxyapatite, tricalcium phosphate and fluorinoapatite) was carried out. Bioactivity of the coatings was tested in vitro by estimation of growth and differentiation of osteogenic cell.