首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials: Design and Application >Studies on structural, mechanical and erosive wear properties of ZA-27 alloy-based micro-nanocomposites
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Studies on structural, mechanical and erosive wear properties of ZA-27 alloy-based micro-nanocomposites

机译:ZA-27合金微纳米复合材料的结构,机械和腐蚀性能研究

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Metal matrix nanocomposites represent a relatively new class of material, which is still being extensively investigated. Most of the studies, however, are devoted to aluminium- or magnesium-based nanocomposites. A limited number of studies focus on zinc alloy base nanocomposites, with fewer still concentrating on zinc alloy base micro-nanocomposites. In addition, most of the tribological studies investigate adhesive or abrasive wear resistance, whereas studies of erosive wear resistance lag well behind. It was previously shown that the presence of nanoparticles in ZA-27 alloy-based nanocomposites led to a slight increase in erosive wear resistance. Upon discovering that, the aim became to produce micro-nanocomposites that would retain the positive effect of nanoparticles, while further elevating performance, by combining microparticles with nanoparticles. The ZA-27 alloy-based micro-nanocomposites were reinforced with 3 wt. % Al_(2)O_(3)microparticles (particle size approx. 36 μm) and with four different amounts (0.3, 0.5, 0.7 and 1 wt. %) of Al_(2)O_(3)nanoparticles (particle size 20–30 nm). Tested materials were produced by the compocasting process, with mechanical alloying pre-processing. Solid particle erosive wear testing, with particle impact angle of 90°, showed that all micro-nanocomposites had significantly increased wear resistance in comparison to the reference material.
机译:金属基质纳米复合材料代表相对较新的材料,仍在广泛研究。然而,大多数研究都致力于铝或基于铝基纳米复合材料。有限数量的研究专注于锌合金基础纳米复合材料,仍然仍然集中在锌合金基础微纳米复合材料上。此外,大多数摩擦学研究都研究了粘合剂或磨料耐磨性,而研究侵蚀耐磨性滞后良好。以前表明,ZA-27合金的纳米复合材料中存在纳米颗粒导致耐腐蚀性耐磨性的略微增加。在发现之后,目的是通过将微粒与纳米颗粒组合,产生将保留纳米颗粒的阳性作用的微纳米复合材料,同时进一步提高性能。用3wt加固Za-27合金的微纳米复合材料。 %Al_(2)O_(3)微粒(粒径约为36μm),并且具有四种不同的量(0.3,0.5,0.7和1wt.%)Al_(2)O_(3)纳米颗粒(粒径20- 30 nm)。经过兼容性加工的综合处理生产的测试材料。固体颗粒糜烂磨损试验,颗粒冲击角为90°,显示所有微纳米复合材料与参考材料相比,耐磨性显着增加。

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