Preparation And Spectra Properties Of Superalloy Nanoparticles By Arc Discharge Method

Alloy nano particles and elemental metal particles have important applications in additive manufacturing due to the nature of the its unique surface effect, small size effect. In the high temperature alloy,the surface effect of nano particles can effectively reduce the laser sintering temperature and the small size effect makes the material can transfer stress to the interior when there is the enormous external force. Nano particles also can be used as additive in important parts. However, the manufacturing of nano particles equipments are expensive, less Production, the size is not uniform, containing oxygen and so on.These reasons limit nano particles engineering. Physical methord prepared nano powder has high production, low price. However, particle size distribution and oxygen content has been restricted the development of this methord.This paper use direct current arc plasma to evaporation alloy bluck for preparing nano particles of nickel based alloy (Nickel base super alloy (Titanium) and titanium alloy alloy), the main elements of nickel based superalloy particles contains Ni, Co, Al, Cr.and Make particles by TC4 titanium alloy for three times, XRD (X-ray diffraction) analysis shows that the composition of the nano particles are different from substrate. Adopt Blended Elemental to production one component nano powder of Mo, W, Nb, Ti, Ni. Through the analysis of atomic absorption spectrometer to find characteristic effect of ratio of hydrogen to argon and influence of gas pressure, current、voltage to the nano particles. Find the coefficient K has the same change rule with the rate of nano particles production.