A high pressure close-coupled gas atomizing nozzle includes multiple discrete gas jet discharge orifices having aerodynamically designed convergent-divergent geometry with an first converging section communicated to a gas supply manifold and to a diverging section by a constricted throat section to increase atomizing gas velocity. The gas jet orifices are oriented at gas jet apex angle selected relative to the melt supply tip apex angle to establish a melt aspiration condition at the melt supply tip.
CONTRACTUAL ORIGIN OF THE INVENTION
The United States Government has rights in the invention pursuant to Contract No. W-7405-ENG-82 between the U.S. Department of Energy and Iowa State University, Ames, Iowa, and Contract No. ITA 87-02 between the U.S. Department of Commerce and Iowa State University, Ames, Iowa, which contracts grant to Iowa State University Research Foundation, Inc. the right to apply for this patent.