Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-10T14:41:33.891Z Has data issue: false hasContentIssue false
  • English
  • Français

In situ SHS-pseudo-HIP as an effective method to develop neutron shielding ceramic matrix composites from quaternary Ti-B-Cr-C system

Published online by Cambridge University Press:  04 July 2016

Marta Ziemnicka-Sylwester ,
Przemyslaw Litwa  and
Tomasz Czujko
Marta Ziemnicka-Sylwester
Affiliation:
Hokkaido University, Division of Materials Science and Engineering, Kita 13, Nishi 8, 060-8628Sapporo, JAPAN
Przemyslaw Litwa
Affiliation:
Military University of Technology, Department of Advanced Materials and Technologies, Gen. S. Kaliskiego 2, 00-908Warsaw, POLAND
Tomasz Czujko
Affiliation:
Military University of Technology, Department of Advanced Materials and Technologies, Gen. S. Kaliskiego 2, 00-908Warsaw, POLAND
Get access

Abstract

Highly refractory composites with predominant volume fraction of TiB2, were “in situ” synthesized and consolidated. The production process was carried out using elemental powders by means of self-propagating high-temperature synthesis under pseudo-hot isostatic pressure (SHS-pseudo-HIP). The Ti:B atomic ratio corresponded to TiB2 formation, and Cr:C atomic ratio has been established in (3:2) molar ratio.

Based on scanning electron images (SEI), very high relative density was obtained with nearly full densification in composite with intended 85vol.% of TiB2, which is sufficiently high concentration of boron from the perspective of neutron shielding. However XRD results indicated formation of CrB and TiC, next to TiB2. This clearly indicates no equilibrium in pseudo-binary TiB2-Cr3C2 system. Besides, broadened peaks in XRD patterns as well as gradient of composition in EDS maps may indicate solid solutions, especially (Ti,Cr)C. The existence of (Ti,Cr) solid solutions and ternary compounds is possible, considering Hume-Rothery rules for hypothetical mutual solubility.

Keywords

Hot Isostatic Pressing (HIP)Combustion Synthesis (SHS)Densification
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1820: Symposium 6D – Innovative production and application of structural and functional ceramic- and metal-matrix composites , 2016 , imrc2015s6d-0001
Copyright
Copyright © Materials Research Society 2016 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Reactor shielding design manual, ed. by Rockwell, Theodore III, Technical Director, Naval Reactors Branch, Division of Reactor Development, United States Atomic Energy Commission, first edition, publicly released 2007, USAGoogle Scholar
http://www.naukowiec.org/tablice/chemia/sklad-izotopowy-pierwiastkow_553.html Google Scholar
Zhao, H. and Cheng, Y.-B., Ceram. Int. 25, 353–358, (1999)CrossRefGoogle Scholar
Ziemnicka-Sylwester, M., Gai, L. and Miura, S., Mater. Design 69, 1–11, (2015)CrossRefGoogle Scholar
Ziemnicka-Sylwester, M., Mater. Design 53, 758–765, (2014)CrossRefGoogle Scholar
Gai, L. and Ziemnicka-Sylwester, M., Int. J. Refract. Met. H. 45, 141–146, (2014)CrossRefGoogle Scholar
Ziemnicka-Sylwester, M., Adv. Sci. Tech. 77, 146–152, (2013)CrossRefGoogle Scholar
Ziemnicka- Sylwester, M., Matsuura, K. and Ohno, M., ISIJ Int. 52 (9), 1698–1704, (2012)CrossRefGoogle Scholar
Ziemnicka-Sylwester, M., Materials 6, 1903–1919, (2013)CrossRefGoogle Scholar
Ziemnicka-Sylwester, M., Ceramic Materials for Energy Applications IV: A Collection of Papers Presented at the 38th International Conference on Advanced Ceramics and Composites January 27-31, 2014 Daytona Beach, FloridaGoogle Scholar
Liao, P.K. and Spear, K.E., Bulletin of Alloy Phase Diagrams 7 (3), 1986 Google Scholar
Nedfors, N., Primetzhofer, D., Wang, L., Lu, J., Hultman, L. and Jansson, U., Surf. Coat. Tech. 266, 167–176, (2015)CrossRefGoogle Scholar
Inorganic Materials Database, AtomWork http://crystdb.nims.go.jp Google Scholar
Kislyi, P. S., L’vov, S. N., Femchenko, V. F. and Samsonov, G. V., Poroshkovaya Metallurgiya 6 (12), 50–53, (1962)Google Scholar
ASM Handbook, Volume 3 Alloy phase diagram, (ASM International, USA, 1992)Google Scholar
ACerS-NIST phase equilibria diagrams CD-Rom database, (version 3.4))Google Scholar