Development of plasma processes applied to metallurgy

• Grant number: 97/13357-0
• Support Opportunities: Research Grants - Innovative Research in Small Business - PIPE
• Start date: June 01, 1998
• End date: November 30, 1998
• Field of knowledge: Physical Sciences and Mathematics - Physics - Physics of Fluids, Plasma Physics and Electrical Discharge
• Principal Investigator: Vladimir Henrique Baggio Scheid
• Grantee: Vladimir Henrique Baggio Scheid
• Company: Metal Plasma Ltda

Abstract

The objective of this project is the development of the following processes of plasma application in metallurgy: plasma nitration of non-ferrous elements, deposition of films of Al2O3, TiN and TiC by using a structure of hollow cathode discharges and superficial treatment of ferrous elements in substitution of the conventional galvanization processes. These processes were chosen due to the fact that they require few modifications to the existing processing unit, as well as their high content of technological innovation and their large commercial potential, given that they are part of a virtually untapped niche market in Brazil. Though there is equipment (from foreign companies) available on the market, Metal Plasma chose to develop its own reactor, since advanced technologies require constant changes and adaptations. The first processing unit consists of a high vacuum stainless steel chamber with a useful volume of 120 liters, a Roots Pumping System with a flow rate of 150 m3/h, a 30 kW electrical source and an admission system for Ar, N2 and H2 gases. Taking the project forward, phase 2 will entail applied research studies in order to develop the selected processes, in order to reach the quality standards that will allow its use on a commercial scale. Basically four experimental techniques will be used in the investigation of the plasma: atomic emission spectroscopy, atomic absorption spectroscopy, mass spectrometry and current flow. (AU)