| Autor: |
CUI Yan, XIANG Jun-fan, CAO Lei-gang, YANG Yue, LIU Yuan |
| Jazyk: |
čínština |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Cailiao gongcheng, Vol 47, Iss 4, Pp 160-166 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
1001-4381 |
| DOI: |
10.11868/j.issn.1001-4381.2018.000351 |
| Popis: |
SiCp/Al composites were prepared by pressureless infiltration using domestic abrasive grade SiC particles with average diameters in the range of 60-80μm. Ultrasonic cleaning method was used to investigate the effect of the surface adsorbate of SiC particles on the infiltration process and mechanical property of the SiCp/Al composite. The results show that all types of the studied SiC particles are adhered by low mass fractions of the adsorbate(μm)and,in certain cases,low fraction of carbon. That surface adsorbate has a negative effect on the wettability between SiC particles and molten alloy,resulting in the reduced density and mechanical property of the infiltrated SiCp/Al composite. Ultrasonic cleaning process can effectively wipe off the adsorbate,and,by using the cleaned SiC particles,the success rate of the infiltration can be raised from 25% to 100%. Correspondingly, the flexure strength and elasticity modulus of the composites are improved from 320MPa to 390MPa and from 203GPa to 232GPa, respectively. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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