Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 532, Issue -, Pages 255-259Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.10.088
Keywords
Hot-pressing; Joining; Fracture; Toughness and toughening; Glass ceramics
Categories
Funding
- National Natural Science Foundation of China [51072166, 50832004]
- Program for New Century Excellent Talents in University
- State Key Laboratory of Solidification Processing (NWPU), China [KP200913]
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In order to improve the shear strength of the joints of carbon/carbon (C/C) composites to lithium aluminum silicate (LAS) glass ceramics, SiC coating and magnesium aluminum silicate (MAS) glass ceramics were used as transition layer and middle layer, respectively, and high quality SiC nanowires were applied as the reinforcement materials in MAS. The SiC nanowires reinforced MAS joint of SiC coated C/C composites to LAS glass ceramics was prepared by a three-step technique of pack cementation, CVD and hot-pressing. The microstructures of the as-prepared joints were characterized by SEM and EDS, and the shear strength of the joints was also examined. The shear strength of the SiC-MAS joint increased from 24.0 +/- 2.0 MPa to 35.5 +/- 5.5 MPa after adding SiC nanowires in MAS. The load decreases in step-style but not perpendicularly after the maximum value, which demonstrates good toughness of the joint with SiC nanowire porous layer. (C) 2011 Elsevier B.V. All rights reserved.
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