METHOD FOR CARBURIZING TANTALUM CONTAINER

摘要

Provided is a method for carburizing a tantalum container, whereby it becomes possible to control the thickness of carburization at each part of the tantalum container readily and it also becomes possible to carburize the tantalum container in an even thickness. A carburization method for impregnating a tantalum container (1) composed of tantalum or a tantalum alloy with carbon comprises a step of supporting the tantalum container (1) by support members (5, 6) provided in a chamber (3) to place the tantalum container (1) in the chamber (3) and a step of reducing the pressure in the chamber (3) and heating the inside of the chamber (3), and is characterized in that a carbon source is provided in the vicinity of a part that cannot be carburized readily.