中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 10 No. 5 October 2000 |
Al6061/SiCpmetal matrix composites①
（State Key Laboratory for Corrosion and Protection of Metals, Institute of Corrosion and
Protection of Metals, The Chinese Academy of Science, Shenyang 110015, P.R.China）
Abstract:The processes of mixed rare earth metal (REM) conversion coatings on 2024 alloy and Al6061/SiCpmetal matrix composites (MMC) were introduced. The coatings were examined to be honeycomb-like feature by scanning electron microscope. X-ray diffraction analysis revealed that the coatings are amorphous structure. The results of X-ray photoelectron spectroscopy indicated that the mixed REM conversion coatings consist predominantly of Ce and O, the contents of other rare earth elements (such as La, Pr) are relatively low, the coatings are about 2~4μm thickness with excellent adhesion and wearability. The results of mass loss test showed that the mixed REM conversion coatings produce corrosion resistant surface of 2024 alloy and Al6061/SiCp.
Key words: 2024 alloy; Al6061/SiCpmetal matrix composites; mixed rare earth metal; conversion coatings
