Effect of vacuum conditions and plasma concentration on the chemical composition and adhesion of vacuum-plasma coatings

12th International Conference on Gas Discharge Plasmas and Their Applications

Borisov, D.P.^1 ; Kuznetsov, V.M.^1 ; Slabodchikov, V.A.^1

Tomsk State University, Tomsk

634050, Russia^1

关键词: Chemical compositions;    Coating-substrate interface;    Gas-discharge plasmas;    Industrial technology;    Magnetron sputtering systems;    Plasma immersion process;    Titanium oxide layer;    Vacuum plasma coatings;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/652/1/012020/pdf
DOI  :  10.1088/1742-6596/652/1/012020

来源: IOP

【 摘 要 】

The paper reports on the chemical composition of titanium nitride (TiN) and silicon (Si) coatings deposited with a new technological vacuum plasma setup which comprises magnetron sputtering systems, arc evaporators, and an efficient plasma generator. It is shown that due to highly clean vacuum conditions and highly clean surface treatment in the gas discharge plasma, both the coating-substrate interface and the coatings as such are almost free from oxygen and carbon. It is found that the coating-substrate interface represents a layer of thickness ≥ 60 nm formed through vacuum plasma mixing of the coating and substrate materials. The TiN coatings obtained on the new equipment display a higher adhesion compared to brass coatings deposited by industrial technologies via intermediate titanium oxide layers. It is concluded that the designed vacuum plasma equipment allows efficient surface modification of materials and articles by vacuum plasma immersion processes.