Effect of casting atmosphere on the quality of Ti-crowns
Pär Anders Sunnerkrantz, Morten Syverud and Håkon Herø | June 4th 1990
Ti has a strong affinity to elements like O, N, and C. During melting a non-reacting crucible and vacuum and/or Ar-gas protection therefore have to be used. If the impurity content becomes too high, the material turns hard and brittle. In the present work vacuum/Ar-pressure casting of crowns has been carried out at different air pressure levels.