Synergistic effect of hybrid size ZrO2 and electroless nickel decoration on the mechanical and high temperature oxidation properties of NiCr–ZrO2 composites

• Published in: Journal of alloys and compounds Vol. 848; p. 156596
• Main Authors: Kangarshahi, Leila Momeni, Sajjadi, Seyed Abdolkarim, Pour-Ali, Sadegh, Kiani-Rashid, Ali-Reza
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 25.12.2020; Elsevier BV
• Subjects: Alloys; Composite materials; Decoration; Densification; Dispersion hardening alloys; Electroless nickel (EN) decoration; Flexural strength; Hardness; High temperature; Hybrid size ZrO2 particles; Mechanical properties; Microstructure; Nanoparticles; Nickel chromium alloys; Oxidation; Oxidation behavior; Oxidation resistance; Oxide dispersion strengthening; Plasma sintering; Spark plasma sintering; Spark plasma sintering (SPS); Synergistic effect; Zirconium dioxide; Mechanical properties; Hybrid size ZrO2 particles; Oxidation behavior; Spark plasma sintering (SPS); Electroless nickel (EN) decoration

Four oxide dispersion strengthened (ODS) NiCr alloys were prepared by spark plasma sintering (SPS). 15 wt% ZrO2 as reinforcement was used in different conditions: (i) undecorated micro-ZrO2, (ii) undecorated hybrid size ZrO2 (12 wt% micro-ZrO2 + 3 wt% nano-ZrO2), (iii) electroless nickel (EN) decora...