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| Effect of pore-forming agent on the properties of Al- based bonding matrix |
| CHEN Ke-xin1,LIU Yi-bo1，2,CAO Cai-ting2,LIU Wei2 |
| 1 Central Iron & Research Institute Group, Beijing 100081, China，2 Beijing Gang Yan Diamond Products Company, Beijing 102200,China |
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Abstract In this paper, the effects of two kinds of pore-forming agents on the properties of Al based binders with AlSi20 as the main component were studied by adding graphite and hollow glass microspheres with the same volume fraction. The results show that for the same volume fraction of graphite and hollow glass microspheres, the influence of graphite on the density, hardness and bending strength of aluminum based binder is greater than that of hollow glass microspheres. The distribution of graphite and hollow glass microsphere is uniform, and there is no segregation. The hollow glass microsphere with larger particle size is broken.
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Received: 21 May 2018
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2020, Vol. 30 
