Device and method for producing a tubular refractory metal compound structure

Abstract

The disclosure provides a device and method used to produce a tubular structure made of a refractory metal compound. In particular, the disclosure provides a device and method used to produce a tubular structure made of a refractory metal compound by reacting a green tubular structure made of a refractory metal with at least one reactive gas.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This is a divisional application that claims benefit to U.S. Nonprovisional application Ser. No. 13 / 171,036 entitled“Device and Method for Producing a Tubular Refractory Metal Compound Structure” filed on Jun. 28, 2011 the contents of which are hereby fully incorporated by reference in their entirety.FIELD OF INVENTION[0002]The present disclosure relates to a device and method used to produce a tubular structure made of a refractory metal compound. In particular, the present disclosure relates to a device and method used to produce a tubular structure made of a refractory metal compound by reacting a green tubular structure made of a refractory metal and at least one reactive gas.BACKGROUND[0003]High quality single crystals, such as aluminum nitride or zinc oxide, are produced using various high temperature crystal growth techniques. Many of these growth techniques involve heating reactants used to form the crystals at high temperatures f...

AI Technical Summary

Benefits of technology

The present disclosure describes a way to produce components made of refractory metal compounds that can be used in high-temperature processes. These components are made by creating a green tubular structure from a refractory metal and then converting it into a nitride, carbide, or boride through a process using a reactive gas. This invention allows for the diffusion of the reactive gas into the refractory metal walls through a pressure gradient, resulting in highly pure and high-quality components.

Problems solved by technology

Some materials that may be resistant to chemical attack at elevated temperatures may also be difficult and expensive to machine or shape.

A TaC component fabricated as a sintered-pressed TaC powder reduces the fabrication costs, but the possible shapes produced by the powder sintering are inherently limited by the process.

In addition to fabrication costs, tantalum is relatively expensive compared to tungsten or other high-temperature materials.

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