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Joining of Carbon—Carbon Composites Using Boron and Titanium Disilicide Interlayers
Author(s) -
Dadras Parviz,
Ngai Thomas T.,
Mehrotra Gopal M.
Publication year - 1997
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1997.tb02800.x
Subject(s) - materials science , composite material , boron , shear strength (soil) , composite number , carbon fibers , shear (geology) , reinforced carbon–carbon , titanium , molybdenum disilicide , boro , joint (building) , metallurgy , molybdenum , structural engineering , chemistry , environmental science , organic chemistry , soil science , engineering , soil water
The feasibility of joining of 3‐D carbon—carbon (C–C) composites by using B and TiSi 2 interlayers has been investigated. The optimum temperature for joining with a B interlayer was determined to be about 1995°C and that for joining with a TiSi 2 interlayer was about 1490°C. The shear strengths of the joints made at these optimum temperatures were found to increase with the shear testing temperature up to a point, followed by a decrease at higher temperatures. For C–C specimens bonded at 1995°C with a B interlayer, the maximum joint shear strength (average value 18.35 MPa) was observed at the test temperature of 1660°C. The shear strength of joints produced with a TiSi 2 interlayer showed a maximum at the test temperature of 1164°C, with an average value of 34.41 MPa. The B interlayers reacted with C–C composite pieces during joining, and the product of reaction was identified as B 4 C. In specimens joined with TiSi 2 interlayers, the reaction between TiSi2 and C did not go to completion, and the bond interlayer contained TiC, SiC, and TiSi 2 .