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}
}
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