Corrosion of aluminum-matrix composites. Status report

Metallic materials for tribocorrosion systems

“…Al-Al 2 O 3 composites also suffer from pitting corrosion at the boundaries which is explained by the formation of different intermetallic compounds e.g. Mg 5 Al 8 during fabrication (ASM International 1987;Metzger & Fishman 1983). The fact that the interfaces play a decisive role led to the development of coated filler materials which can indeed increase corrosion resistance, but of course also increase the prize (Rajan et al 1998).…”

Effect of SiC particle size on corrosion behavior of pressure infiltrated Al matrix composites in a NaCl solution

“…There has been a significant amount of research on the microstructure and optimization of the mechanical behavior of MMCs [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Instead, published literature addressing their corrosion behavior is rather limited [16][17][18][19][20][21][22][23][24][25][26][27][28][29]. These studies [16][17][18][19][20][21][22][23][24][25][26][27][28][29], conducted on Al matrix composites, have been focused on the corrosion susceptibility in NaCl solution, as well as pitting potential and pit morphology.…”

“…Instead, published literature addressing their corrosion behavior is rather limited [16][17][18][19][20][21][22][23][24][25][26][27][28][29]. These studies [16][17][18][19][20][21][22][23][24][25][26][27][28][29], conducted on Al matrix composites, have been focused on the corrosion susceptibility in NaCl solution, as well as pitting potential and pit morphology. Since pits initiate at secondary particles within the matrix, composites have more pit initiation sites than monolithic matrix [18].…”

A Comparative Study of Corrosion Behavior of Al/SiCp Composite with Cast Iron

“…30 In SiC-reinforced AMC, the formation of aluminum carbide (Al 4 C 3 ) at the interface during processing enhances the corrosion rate by making it susceptible to hydrolysis. 31 It has been reported that the corrosion rate of SiCpreinforced aluminum composites depends on the purity, 32 volume fraction 28,32-34 and distribution of SiC, 35 and the microstructure of the aluminum alloy. Impure SiC (residual contamination of carbon) reduces the resistivity and thus causes more interfacial preferential dissolution (IPD).…”