Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 698, Issue -, Pages 27-32Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.12.244
Keywords
ZrB2; Microstructure; Chemical vapor deposition; TEM
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Funding
- National Natural Science Foundation of China [11572105, 51372047]
- National Natural Science Funds for Distinguished Young Scholar [51525201]
- Provincial Natural Science Foundation of Shandong [ZR2014JL032]
- Science and Technology Development Plan of Shandong of China [2014GZX201008]
- International Science and Technology Cooperation Program of China [2014DFA93130]
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ZrB2 grains were prepared on graphite by chemical vapor deposition using a gas mixture of ZrCl4, BCl3, H-2 and Ar at 1150 degrees C. The microstructure and phase composition of the coating were investigated by SEM, XRD, XPS and TEM. The results indicated that ZrB2 grains were deposited and grown directly by a vapor -solid growth mechanism on graphite without intermediate phase. Granulated ZrB2 grains were composed by many sub-grains with different crystal orientation. The rod-like or pagoda-like ZrB2 grains with lamellar structures were grew on the granulated ZrB2 particles and composed of two parts: the internal part with axial stacking faults and annular part with radial stacking faults. (C) 2016 Elsevier B.V. All rights reserved.
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