Patent ID: 8986466
Filing Date: 2015-03-24
Classification: C23C

Abstract:
1. A method for subjecting a tantalum member made of tantalum or a tantalum alloy and having a planar part to a carburization process for allowing carbon to penetrate the member from the surface toward the inner portion thereof, the method for carburizing the tantalum member comprising the steps of: setting the tantalum member in a chamber containing a carbon source by supporting the planar part on a plurality of support rods tapered at distal ends thereof and located below the planar part; and subjecting the tantalum member to a carburization process by reducing in pressure and heating the interior of the chamber to allow carbon derived from the carbon source to penetrate the tantalum member from the surface thereof, wherein the distal ends of the plurality of support rods support the entire planar part, and the plurality of support rods serve as the carbon source.