DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Mechanical properties of fusion welded ceramics in the $$\mathrm{SiC-ZrB}$$2 and $$\mathrm{SiC-ZrB}$$2-$$\mathrm{ZrC}$$ systems

Journal Article · · Journal of the European Ceramic Society
 [1];  [2];  [2];  [2];  [3]
  1. Missouri University of Science and Technology, Rolla, MO (United States); OSTI
  2. Missouri University of Science and Technology, Rolla, MO (United States)
  3. UES, Inc., Dayton, OH (United States)

Mechanical properties of welded SiC-ZrB2 and SiC-ZrB2-ZrC ceramics were measured up to 1700 °C. Commercial powders were hot pressed, machined into coupons, and preheated to 1600 °C before joining the ceramics using either tungsten inert gas welding or plasma arc welding. Toughness of the parent materials was 3–4 MPa*m1/2 which decreased after welding to 2–2.5 MPa*m1/2. Strength of the SiC-ZrB2-ZrC parent material was ~700 MPa at 25 °C, ~300 MPa at 1700 °C, and retained 40–60% of this strength once welded. Strength of the SiC-ZrB2 parent material was ~600 MPa at 25 °C and 1700 °C and retained 20–30% of this strength once welded. Griffith analysis indicated that the strength in the parent materials was controlled by the size of SiC clusters while strength of welds was controlled by the size of pores in fusion zones. Therefore, removal of pores in produced fusion zones should be investigated to improve strength of future ceramic welds.

Research Organization:
Missouri University of Science and Technology, Rolla, MO (United States); UES, Inc., Dayton, OH (United States)
Sponsoring Organization:
UES, Inc; USDOE Office of Science (SC)
Grant/Contract Number:
SC0017082
OSTI ID:
1977297
Journal Information:
Journal of the European Ceramic Society, Journal Name: Journal of the European Ceramic Society Journal Issue: 5 Vol. 42; ISSN 0955-2219
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (41)

Solid state reaction of zirconia with carbon journal December 1997
High toughness, 3D textile, SiC/SiC composites by chemical vapor infiltration journal November 2001
Materials challenges in nuclear energy journal February 2013
Changed oxidation behavior of ZrB2–SiC ceramics with the addition of ZrC journal July 2015
Influence of silicon carbide particle size on the microstructure and mechanical properties of zirconium diboride–silicon carbide ceramics journal January 2007
Mechanical and physical behavior of spark plasma sintered ZrC–ZrB2–SiC composites journal January 2008
Measurement of thermal residual stresses in ZrB2–SiC composites journal August 2011
Temperature-dependent mechanical and long crack behavior of zirconium diboride–silicon carbide composite journal September 2012
Creep behavior of a zirconium diboride–silicon carbide composite journal November 2013
Mechanical behavior of zirconium diboride–silicon carbide ceramics at elevated temperature in air journal December 2013
Plasma arc welding of ZrB2–20vol% ZrC ceramics journal December 2014
Mechanical behavior of zirconium diboride–silicon carbide–boron carbide ceramics up to 2200°C journal February 2015
Synergetic roles of ZrC and SiC in ternary ZrB 2 –SiC–ZrC ceramics journal December 2015
Mechanical, electrical and thermal properties of ZrC-ZrB2-SiC ternary eutectic composites prepared by arc melting journal September 2018
Characterization of fusion welded ceramics in the SiC-ZrB2-ZrC system journal April 2021
Current status and critical issues for development of SiC composites for fusion applications journal August 2007
Silicon carbide composites as fusion power reactor structural materials journal October 2011
Bond failure of a SiC/SiC brazed assembly journal July 2012
Microstructure and mechanical properties of joints in sintered SiC fiber-bonded ceramics brazed with Ag–Cu–Ti alloy journal November 2012
Effect of fiber directionality on the static and dynamic mechanical properties of 3D SiCf/SiC composites journal March 2016
On the stoichiometry of zirconium carbide journal April 2020
Material Properties of a Sintered α-SiC journal September 1997
Neutron scattering lengths and cross sections journal January 1992
A Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: I, Direct Crack Measurements journal September 1981
Indentation Fracture Toughness of Sintered Silicon Carbide in the Palmqvist Crack Regime journal June 1989
Fracture Toughness of 2-D Woven SiC/SiC CVI-Composites with Multilayered Interphases journal April 1996
Reactive Hot Pressing of ZrB2-SiC Composites journal September 2000
High-Strength Zirconium Diboride-Based Ceramics journal June 2004
High-Toughness Silicon Carbide as Armor: High-Toughness Silicon Carbide as Armor journal June 2005
Pressureless Densification of Zirconium Diboride with Boron Carbide Additions journal May 2006
Pressureless Sintering of Zirconium Diboride Using Boron Carbide and Carbon Additions journal November 2007
Reactive Hot Pressing of ZrB 2 -SiC-ZrC Composites at 1600°C journal August 2008
Strength of Zirconium Diboride to 2300°C journal December 2012
Ultra-High Temperature Mechanical Properties of a Zirconium Diboride-Zirconium Carbide Ceramic journal October 2015
Elevated Temperature Strength Enhancement of ZrB 2 –30 vol% SiC Ceramics by Postsintering Thermal Annealing journal November 2015
Solidification of welded SiC–ZrB 2 –ZrC ceramics journal April 2018
Response of isotopically tailored titanium diboride to neutron irradiation journal September 2018
Oxidation of ZrB[sub 2]-Based Ceramics in Dry Air journal January 2003
The Formation and Dissociation of Silicon Carbide journal January 1935
Properties of Silicon Carbide for Nuclear Fuel Particle Coatings journal September 1977
Preparation of ZrB2-SiC composites by arc melting and their properties journal January 2008