Preparation Of In-Situ Carbides Reinforced Hybrid Copper-Based Composite By Mechanical Alloying And Its Characterization
The goal of this research work is to investigate the feasibility of the synthesis of two distinct in-situ carbides (NbC and TiC) simultaneously in a copper matrix via mechanical alloying and powder metallurgy from elemental powders of Cu, Nb, Ti and graphite. Three mixtures of starting powders wi...
| 第一著者: | |
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| フォーマット: | 学位論文 |
| 言語: | 英語 |
| 出版事項: |
2010
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| 主題: | |
| オンライン･アクセス: | http://eprints.usm.my/42285/ |
| 要約: | The goal of this research work is to investigate the feasibility of the synthesis
of two distinct in-situ carbides (NbC and TiC) simultaneously in a copper matrix via
mechanical alloying and powder metallurgy from elemental powders of Cu, Nb, Ti
and graphite. Three mixtures of starting powders with compositions corresponding to
Cu-10vol.%NbC-10vol.%TiC, Cu-15vol.%NbC-15vol.%TiC and Cu-20vol.%NbC-
20vol.%TiC were mechanical alloyed using a planetary ball mill for 5, 10, 20 and 30
hours. The as-milled powders then were cold pressed at compaction pressure in range
of 500-1000 MPa and sintered in a vacuum sintering furnace for 1 hour at different
temperatures from 700 to 1000oC |
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