TY - JOUR
T1 - Stability of copper segregations on copper/carbon metal-matrix composite interfaces under alloying
AU - Dorfman, Simon
AU - Fuks, David
N1 - Funding Information:
We greatly appreciate the support of this research by grant #94-00044/l from the United States-Israel Binational Science Foundation (BSF), Jerusalem, Israel. S.D. acknowledges the Israel Ministry of Absorption for additional support.
PY - 1997/1/1
Y1 - 1997/1/1
N2 - The problem of stability of interfaces in metal-matrix composites is reduced to the investigation of the segregation of copper atoms at the metal/fibre interface. Calculations of excess thermodynamic functions of interstitial solid solutions are performed. The influence of additives on the stability of copper segregations formed on the fibres is discussed. The wettability of the carbon/copper interfaces is regulated by the solubility of the fibre in the matrix with different dopants. It is shown ' that alloying of the matrix by the additional element, substituting copper in the interstitial metal-metalloid solid solution, changes the value of the mixing energy and influences the volume fraction of two-dimensional segregations of copper. Some additives are predicted as the best alloying elements for preventing the copper segregations on the composite interfaces.
AB - The problem of stability of interfaces in metal-matrix composites is reduced to the investigation of the segregation of copper atoms at the metal/fibre interface. Calculations of excess thermodynamic functions of interstitial solid solutions are performed. The influence of additives on the stability of copper segregations formed on the fibres is discussed. The wettability of the carbon/copper interfaces is regulated by the solubility of the fibre in the matrix with different dopants. It is shown ' that alloying of the matrix by the additional element, substituting copper in the interstitial metal-metalloid solid solution, changes the value of the mixing energy and influences the volume fraction of two-dimensional segregations of copper. Some additives are predicted as the best alloying elements for preventing the copper segregations on the composite interfaces.
KW - Composite interfaces
KW - Excess thermodynamic functions
KW - Interstitial solid solutions
KW - Metal-matrix composites
UR - http://www.scopus.com/inward/record.url?scp=0031213510&partnerID=8YFLogxK
U2 - 10.1016/S0266-3538(96)00180-7
DO - 10.1016/S0266-3538(96)00180-7
M3 - Article
AN - SCOPUS:0031213510
SN - 0266-3538
VL - 57
SP - 1065
EP - 1069
JO - Composites Science and Technology
JF - Composites Science and Technology
IS - 8
ER -