Additive manufacturing of complex objects using refractory matrix materials
Abstract
A method for the manufacture of a three-dimensional object using a refractory matrix material is provided. The method includes the additive manufacture of a green body from a powder-based refractory matrix material followed by densification via chemical vapor infiltration (CVI). The refractory matrix material can be a refractory ceramic (e.g., silicon carbide, zirconium carbide, or graphite) or a refractory metal (e.g., molybdenum or tungsten). In one embodiment, the matrix material is deposited according to a binder-jet printing process to produce a green body having a complex geometry. The CVI process increases its density, provides a hermetic seal, and yields an object with mechanical integrity. The residual binder content dissociates and is removed from the green body prior to the start of the CVI process as temperatures increase in the CVI reactor. The CVI process selective deposits a fully dense coating on all internal and external surfaces of the finished object.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1892742
- Patent Number(s):
- 11285635
- Application Number:
- 16/527,317
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B - PERFORMING OPERATIONS B28 - WORKING CEMENT, CLAY, OR STONE B28B - SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 07/31/2019
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Terrani, Kurt A., Trammell, Michael P., and Jolly, Brian C. Additive manufacturing of complex objects using refractory matrix materials. United States: N. p., 2022.
Web.
Terrani, Kurt A., Trammell, Michael P., & Jolly, Brian C. Additive manufacturing of complex objects using refractory matrix materials. United States.
Terrani, Kurt A., Trammell, Michael P., and Jolly, Brian C. Tue .
"Additive manufacturing of complex objects using refractory matrix materials". United States. https://www.osti.gov/servlets/purl/1892742.
@article{osti_1892742,
title = {Additive manufacturing of complex objects using refractory matrix materials},
author = {Terrani, Kurt A. and Trammell, Michael P. and Jolly, Brian C.},
abstractNote = {A method for the manufacture of a three-dimensional object using a refractory matrix material is provided. The method includes the additive manufacture of a green body from a powder-based refractory matrix material followed by densification via chemical vapor infiltration (CVI). The refractory matrix material can be a refractory ceramic (e.g., silicon carbide, zirconium carbide, or graphite) or a refractory metal (e.g., molybdenum or tungsten). In one embodiment, the matrix material is deposited according to a binder-jet printing process to produce a green body having a complex geometry. The CVI process increases its density, provides a hermetic seal, and yields an object with mechanical integrity. The residual binder content dissociates and is removed from the green body prior to the start of the CVI process as temperatures increase in the CVI reactor. The CVI process selective deposits a fully dense coating on all internal and external surfaces of the finished object.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 29 00:00:00 EDT 2022},
month = {Tue Mar 29 00:00:00 EDT 2022}
}
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Three-dimensional printing techniques
patent, April 1993
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