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Title: Packed bed carburization of tantalum and tantalum alloy

Abstract

Packed bed carburization of a tantalum or tantalum alloy object is disclosed. A method for producing corrosion-resistant tantalum or tantalum alloy objects is described. The method includes the steps of placing the object in contact with a carburizing pack, heating the packed object in vacuum furnace to a temperature whereby carbon from the pack diffuses into the object forming grains with tantalum carbide along the grain boundaries, and etching the surface of the carburized object. This latter step removes tantalum carbides from the surface of the carburized tantalum object while leaving the tantalum carbide along the grain boundaries. 4 figs.

Inventors:
; ;
Issue Date:
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
6450197
Patent Number(s):
5916377
Application Number:
PPN: US 9-063327
Assignee:
Univ. of California, Los Alamos, NM (United States)
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Resource Relation:
Patent File Date: 20 Apr 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARBURIZATION; CORROSION RESISTANT ALLOYS; FABRICATION; HEAT TREATMENTS; TANTALUM; TANTALUM ALLOYS; TANTALUM CARBIDES; ALLOYS; CARBIDES; CARBON COMPOUNDS; ELEMENTS; HARDENING; METALS; REFRACTORY METAL COMPOUNDS; SURFACE HARDENING; SURFACE TREATMENTS; TANTALUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; 360101* - Metals & Alloys- Preparation & Fabrication; 360105 - Metals & Alloys- Corrosion & Erosion

Citation Formats

Lopez, P C, Rodriguez, P J, and Pereyra, R A. Packed bed carburization of tantalum and tantalum alloy. United States: N. p., 1999. Web.
Lopez, P C, Rodriguez, P J, & Pereyra, R A. Packed bed carburization of tantalum and tantalum alloy. United States.
Lopez, P C, Rodriguez, P J, and Pereyra, R A. Tue . "Packed bed carburization of tantalum and tantalum alloy". United States.
@article{osti_6450197,
title = {Packed bed carburization of tantalum and tantalum alloy},
author = {Lopez, P C and Rodriguez, P J and Pereyra, R A},
abstractNote = {Packed bed carburization of a tantalum or tantalum alloy object is disclosed. A method for producing corrosion-resistant tantalum or tantalum alloy objects is described. The method includes the steps of placing the object in contact with a carburizing pack, heating the packed object in vacuum furnace to a temperature whereby carbon from the pack diffuses into the object forming grains with tantalum carbide along the grain boundaries, and etching the surface of the carburized object. This latter step removes tantalum carbides from the surface of the carburized tantalum object while leaving the tantalum carbide along the grain boundaries. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {6}
}