Properties of composites based on oxides.
|Reinforcement||Production approach||Properties achieved||References|
|n-TiO2||Equal channel angular pressing (ECAP)||Compact density 90% of theoretical density, hardness 3.72 GPa/344 VHN and Young's modulus 92 GPa. Compacts consolidated by 4 ECAP passes at 473 K had highest density and high compressive strength of nearly 1.7 GPa|||
|Al2O3||Mechanical alloying and hot press sintering||Hardness and compressive strength of Al2O3/7075 composites first increased and then decreased with Al2O3 quantity increasing, and 5 wt.% Al2O3 addition made the material displayed superior comprehensive mechanical properties.
The tribological properties also indicated that 5 wt.% Al2O3 nanoparticle significantly improved the high-temperature wear resistance of 7075 alloys
|Al2O3||High-pressure torsion (HPT)||The initial hardness Hv167 after HPT increased to nearly Hv260.
Tensile testing at 623K demonstrated the potential for achieving true super plasticity in the HPT-processed MMC with a maximum elongation of nearly 670% when testing at a strain rate of 1.0 × 10−2 s−1
|n-Al2O3||Ultrasonic vibration||Compared to the hardness of AA7075(VHN94.7), the hardness of Al2O3/7075 composites (VHN113.8) increased by nearly 20%.
Compared to the hardness of Al2O3/7075 composites (VHN 113.8), the hardness of Al2O3/7075 composites under solution treatment (VHN150.4) at 480°C for 5 h increased by nearly 32%.
Hardness of Al2O3/7075 composites under optimum T6 heat treatment (VHN173.5) increased by nearly 52%
|Al2O3||Squeeze casting||The hardness of the composite is 59 HRB.
The compressive strength is 587 MPa
|ZrO2||PM||By the planetary ball mill, a full dispersion of the ZrO2 through the matrix is achieved.
In the case of the Simoloyer mill, the results showed that there was not a fine dispersion of the ZrO2. particles.
The shaker mill produced the best results, because full dispersion of the ZrO2 particles took place in a homogeneous way in half the time taken by the other mills tested
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.