Dry Sliding Wear Behavior of Sintered Copper-Diamond Composite Fabricated by Powder Metallurgy

2010 ◽  
Vol 139-141 ◽  
pp. 335-339
Author(s):  
Run Guo Zheng ◽  
Zai Ji Zhan ◽  
Xiao Ting Peng ◽  
Wen Kui Wang
Keyword(s):  
Powder Metallurgy ◽  
Wear Mechanisms ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Pure Copper ◽  
Dry Sliding ◽  
Chemical Compositions ◽  
Powder Metallurgy Method ◽  
Diamond Particles ◽  
Sintered Copper

Copper matrix composites with 3wt% diamond particles were fabricated by powder metallurgy method. Sliding wear behavior of the copper-diamond composites was carried out by using a pin-on-disk wear tester under dry sliding conditions at a constant sliding speed of 100 m/s. The results showed that the wear rate of the composites was significantly lower than that of pure copper. The addition of diamond particles can markedly increase hardness and wear resistance of the copper-diamond composites. For determination of the wear mechanisms of the copper-diamond composites, a scanning electron microscope (SEM) equipped with energy dispersive spectroscopy (EDS) was employed to observe the microstructure and analyze the chemical compositions of the worn surface. It is found that the main wear mechanisms of the sintered copper-diamond composites were abrasive wear and adhesive wear.

Tribological Behavior of La2O3 Particulate Reinforced Copper Matrix Composites

2010 ◽  
Vol 150-151 ◽  
pp. 979-983
Author(s):  
Run Guo Zheng ◽  
Zai Ji Zhan ◽  
Bo Liang ◽  
Wen Kui Wang
Keyword(s):  
Wear Rate ◽  
Wear Mechanisms ◽  
Wear Behavior ◽  
Pure Copper ◽  
Copper Matrix ◽  
Powder Metallurgy Method ◽  
Matrix Composites ◽  
Copper Matrix Composites ◽  
Sintered Copper ◽  
Pin On Disk

Copper matrix composites with different La2O3 content were fabricated by powder metallurgy method. Sliding wear behavior of the Cu-La2O3 composites was carried out by using a pin-on-disk wear tester under dry sliding conditions at a constant sliding speed of 20 m/s. The results showed that the wear rate of the composites was significantly lower than that of pure copper. The friction coefficient and wear rate of Cu matrix composites decreased significantly by incorporation of La2O3 particles. For determination of the wear mechanisms of the composites, the worn surfaces were examined using scanning electron microscopy. It is found that the main wear mechanisms of the sintered copper-La2O3 composites were oxidation wear and adhesive wear.

Dry Sliding Wear Behavior of the Reinforced by Graphite Particle and Heat Treated of Recycled Aluminum AA6061 Based MMC Fabricated by Powder Metallurgy Method

2017 ◽  
Vol 740 ◽  
pp. 9-16
Author(s):  
Ahmed Sahib Mahdi ◽  
Mohammad Sukri Mustapa ◽  
Mahmod Abd Hakim Mohamad ◽  
Abdul Latif M. Tobi ◽  
Muhammad Irfan Ab Kadir ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Powder Metallurgy ◽  
Compression Strength ◽  
Sliding Wear ◽  
Wear Behavior ◽  
High Wear Resistance ◽  
Dry Sliding Wear ◽  
Powder Metallurgy Method ◽  
Heat Treated ◽  
Improvement Ratio

The micro-hardness and compression of recycling aluminum alloy AA6061 were investigated as a function of the different microstructure and constituent powder metallurgy method. Five specimens were selected to investigate the compression strength and microhardness. The first, as fabricated specimen (as compacted), the second was as heat treated by quenching and aging process. Three specimens were mixed with Graphite particles as a reinforcement material. Compression strength values were tested for the specimens as fabricated and heat treated which were 195 and 300 MPa, respectively. The improvement ratio was 52% for the specimen as heat treated. On the other hand, high wear resistance was given by the specimen as heat treated, whereas, the lower wear strength was at the specimen mixed with 4.5% Graphite. These results were attributed to that the wear resistance related to the microhardness value.

Dry sliding wear behavior of aluminum graphene nanoplatelet (GNP) composites

2016 ◽  
Vol 58 (7-8) ◽  
pp. 640-643 ◽  
Author(s):  
Ilyas Istif ◽  
Mehmet Tunc Tuncel
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Graphene Nanoplatelet
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