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Model experiment on reactive phase formation and solidification of B4C-BN composites via nanosecond pulse laser processing.
- Source :
- European Physical Journal: Special Topics; Feb2020, Vol. 229 Issue 2/3, p217-224, 8p
- Publication Year :
- 2020
-
Abstract
- In the present work we describe results of a model experiment on reactive phase formation of B<subscript>4</subscript>C-BN composites on a steel substrate using high-energy short laser pulses. The model experiment opens a way for high quality laser joining of boron based ceramics with steels through the reactive phase formation at the steel-ceramic interface. The study was focused on changes in microstructure, chemical and phase compositions in surface layers of the resulting B<subscript>4</subscript>C-BN-Fe composites. Ultrafine powders of boron carbide and boron nitride were spread on a steel surface and subjected to laser processing with nanosecond pulses. The reactions occur as a result of elevated temperature under action of laser short pulses. Subsequent rapid solidification leads to highly nonequilibrium solidification and metastable phase formation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 19516355
- Volume :
- 229
- Issue :
- 2/3
- Database :
- Complementary Index
- Journal :
- European Physical Journal: Special Topics
- Publication Type :
- Academic Journal
- Accession number :
- 141624972
- Full Text :
- https://doi.org/10.1140/epjst/e2019-900076-1