Preparation of Al2O3 Nano-Particles Reinforced Fe-Based Composite Materials via In Situ Synthesis

Rui Rui Fan; Yan Li; Liu Jie Xu; Shi Zhong Wei

doi:10.4028/www.scientific.net/AMR.476-478.1287

Paper Titles

Synthesis, Characterization, and Gas-Sensing for Trimethylamine of Mesoporous Ni-Doped Indium Oxide
p.1264

Experiment and Analyses on 16 Mn Steel under Cyclic Loading Controlled by Strain
p.1271

A Kinetic Model of Alumina Inclusion Nucleation in Molten Steel
p.1275

Effect of Ultrasonic and Argon-Blowing Treatment on the Nitrogen Content in Low Carbon Steel
p.1281

Preparation of Al₂O₃ Nano-Particles Reinforced Fe-Based Composite Materials via In Situ Synthesis
p.1287

Point Clouds Based Dynamical Representation for Heterogeneous Objects
p.1291

Research of Ventilation and Dust Removal Technology for Whole Rock Fully-Mechanized Excavation Face
p.1297

PWM Chopper of Ultrasonic Power Supply Based on FPGA
p.1305

Prediction of Tensile Strength Based on RBF Neural Network
p.1309

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 476-478Preparation of Al2O3 Nano-Particles Reinforced...

Preparation of Al₂O₃ Nano-Particles Reinforced Fe-Based Composite Materials via In Situ Synthesis

Abstract:

Al₂O₃ reinforced iron based composite were prepared via in-situ synthesis with aluminum nitrate, citric acid and iron powder as raw materials, a little C and Mo as additive. The influences of the contents of Al₂O₃, C and Mo on the microstructure and micro-hardness of the Fe based composites were characterized by XRD, SEM, TEM and micro-hardness tester. The results showed that the Fe-based composite materials with high bonding strength between matrix and Al₂O₃ can be prepared by in situ synthesis method. The best ratio of the nine Al2O3 particles reinforced Fe-based composite materials in three groups is 3vol. % C, 5vol. % or 7vol. % Al₂O₃, sintering temperature is 1300°C and quenching temperature is 900°C. The microstructure of the matrix without C addition is ferrite before and after quenching; the microstructure of the matrix with C addition is pearlite before quenching, and the microstructure become to martensite after quenching, the α-Al2O3 and FeC₃ are reinforced phases. The microstructure of the matrix with Mo addition is ferrite and FeAl₂O₄ before and after quenching.