共查询到10条相似文献,搜索用时 46 毫秒
1.
2.
试验研究了有机膨润土加入量从0.5%~5%时,对粉煤灰铸铁涂料的悬浮性、粘结性、高温抗裂性等主要性能的影响规律.从理论和实践进行探讨,结果发现:随着粉煤灰铸造涂料中有机膨润土加入量的增加,涂料的悬浮性提高,粘度增加,但是涂料的高温抗裂性变差. 相似文献
3.
4.
Piotr Długosz Angelika Rączka Adrian Kopeć Rudolf Krzyżak Paweł Darłak Marek Hebda 《Journal of Materials Engineering and Performance》2016,25(6):2261-2266
This paper presents novel opportunities for management of fly ash by synthesizing the material into cordierite ceramics and using it as a reinforcing phase for light metal alloys. Metal matrix composites (based on magnesium alloy and aluminum alloy) were produced by squeeze casting. The magnesium matrix composites with a suitably selected reinforcing phase content (2 wt.%) exhibited much better strength properties than the unmodified alloy (AM60). It was also demonstrated that the wettability (or the lack thereof) in the metal-ceramic system is critical to successful production of the composites based on the AK7 alloy with cordierite. Light alloy matrix composites reinforced with cordierite ceramics particles are innovative materials that combine high strength with low weight, which may be a key factor of merit for numerous applications of the composite in various branches of industries. 相似文献
5.
6.
7.
采用搅拌铸造法,向镁合金熔体中添加漂珠,制备了漂珠/AZ91D复合材料,研究了该复合材料微观组织的均匀性、相组成、力学性能和阻尼性能。结果表明,漂珠在基体中分布均匀,无偏聚现象。在复合材料制备过程中,漂珠与镁合金熔体发生反应并被填充,使得复合材料中有Mg2Si和MgO相生成。与基体合金相比,复合材料的力学性能和阻尼性能均得到明显提高。复合材料的断裂是以解理断裂为主的脆性断裂,在断裂过程中漂珠壁被撕裂。复合材料的阻尼机制主要是位错阻尼和界面阻尼。 相似文献
8.
Effect of Fly Ash Particles on the Compressive Properties of Closed-Cell Aluminum Foams 总被引:1,自引:0,他引:1
The closed-cell aluminum foam reinforced by 1.5 and 3.0 wt.% fly ash particles were manufactured by molten body transitional foaming process. The backscattered electron image shows that fly ash particles distribute uniformly in the cell wall. The quasi-static compression tests were conducted. Results show that Al/Fly ash foams have stable compressive property and the sudden stress drop was not observed. The plateau stress increases nearly linearly with relative density. Moreover, the addition of fly ash particles improves the plateau stress. Also, the energy absorption property of Al/Fly ash foams increase with relative density and fly ash content. These can be attributed to the contribution of the compression of cell gas and the membrane stress in the cell wall. 相似文献
9.
10.
传统观念中,利用粉煤灰制砖或生产水泥等方面的综台利用,对其开发利用的初衷,意在消耗因燃煤获取热能后产生的灰渣--粉煤灰,借以减少粉煤灰对自然环境所产生的污染,由此而派生出来了当前广为流行的粉煤灰开发利用方面的初级处理观念和开发利用方面的普及型方式.这种对粉煤灰的开发利用的实质在于;用粉煤灰代替制砖或生产硅酸盐水泥中的粘土,其主要目的是消极性地消耗掉粉煤灰. 相似文献