Effects of boron and chromium carbide on impact wear and corrosion behavior of copper composites produced by powder metallurgy
Powder Metallurgy, cilt.69, sa.4, ss.358-377, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 69 Sayı: 4
- Basım Tarihi: 2026
- Doi Numarası: 10.1177/00325899261469752
- Dergi Adı: Powder Metallurgy
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, Chemical Abstracts Core, Compendex, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Sayfa Sayıları: ss.358-377
- Anahtar Kelimeler: corrosion, Cu-based composites, electrical conductivity, impact wear, powder metallurgy
- İnönü Üniversitesi Adresli: Evet
Özet
In this study, the effects of boron (B) and chromium carbide (Cr3C2) reinforcements on the impact wear and corrosion behaviour of copper-based composites produced by powder metallurgy were investigated. Composites containing 0, 5 and 10 wt.% reinforcement were characterised using X-ray diffraction, scanning electron microscope–energy-dispersive X-ray spectroscopy, optical microscopy and three-dimensional profilometry. Impact wear tests were performed under cyclic loading conditions of 10,000 and 100,000 cycles at 2.0 and 3.0 Hz, while corrosion performance was evaluated in 3.5 wt.% NaCl solution using potentiodynamic polarisation. The CuBCr5 composite exhibited the lowest volume loss under the investigated impact wear conditions, with a minimum value of 0.030 mm3 and a value of 0.200 mm3 under the most severe condition. In addition, CuBCr5 showed the best corrosion resistance, with a corrosion rate of 0.808 mpy and a corrosion current density of 2.00 µA/cm2. These improvements were attributed to improved densification, grain refinement, more homogeneous reinforcement distribution and the possible development of a more stable protective surface layer. Although reinforcement addition reduced the electrical conductivity compared with Pure Cu, the CuBCr5 composite maintained a more stable conductivity response than CuBCr10 within the investigated frequency range. Overall, the results indicate that 5 wt.% B–Cr3C2 reinforcement provides the most balanced combination of impact wear resistance, corrosion resistance and electrical response in Cu-based composites.