Influence of grinding on service properties of VT-22 powder applied in additive technologies

8th All-Russian Conference on Low Temperature Plasma in the Processes of Functional Coating Preparation

Zakharov, M.N.^1 ; Rybalko, O.F.^1 ; Romanova, O.V.^1 ; Gelchinskiy, B.R.^1 ; Il'Inykh, S.A.^1 ; Krashaninin, V.A.^1

Institute of Metallurgy, Ural Branch, Russian Academy of Sciences, Amundsen 101, Ekaterinburg

620016, Russia^1

关键词: Additive technology;    Chemical and phase compositions;    Gaseous mixture;    Grinding time;    Plasma sprayed;    Processing properties;    Service properties;    X-ray diffraction data;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/789/1/012070/pdf
DOI  :  10.1088/1742-6596/789/1/012070

来源: IOP

【 摘 要 】

Powder of titanium alloy (VT-22) produced by plasma-spraying was subjected to grinding to obtain powder with size less 100 microns. These powders were sprayed by plasma unit using two types of gases, namely, air and air with methane (spraying in water and sputtering of coating on steel support). Influence of grinding time on yield of powder of required fraction was studied. Morphology and phase composition of the grinded powder and plasma sprayed one were under investigation. In the result of experiments, it appears that the grinding time genuinely influences the chemical and phase compositions, but there is no effect on physical-processing properties. For powders after plasma spraying some changes of non-metal elements content were detected by chemical analysis. Using gaseous mixture of air and methane in plasma spraying unit leads to formation of a new phase in the powder according X-ray diffraction data.