Ni-coated SiCp reinforced aluminum composites processed by vacuum infiltration

Wen-Sheng Chung, Su Jien Lin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


A vacuum infiltration process has been developed to process aluminum-base composites reinforced with particulate SiCp. Electroless nickel coating of SiCp was used to improve wetting by molten aluminum. Experimental results showed that composites of aluminum with 5.9 wt% Si and 0.23 wt% Mg containing about 50 vol% Ni-coated SiCp were completely infiltrated at a temperature above 700°C. The effects of nickel coating thickness and infiltration temperature on infiltration behavior were investigated. The infiltration rate increased and the infiltration incubation time decreased with increasing infiltration temperature or nickel coating thickness. The microstructure, nickel distribution, bending strength and fracture were also examined. Nonuniformity bending strength and fracture morphology were attributed to nickel macrosegregation.

Original languageEnglish
Pages (from-to)1437-1447
Number of pages11
JournalMaterials Research Bulletin
Issue number12
StatePublished - 1 Dec 1996


  • A. composites
  • C. electron microscopy
  • D. microstructure

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