用陶纳米和微粒子增强的环氧树脂的磨损行为
Juana Abenojar1,2, Yolanda Ballesteros3, Mohsen Bahrami1
1Materials Science and Engineering Department, Universidad Carlos III de Madrid, 28911 Leganes, Spain.
Polymers
|April 13, 2024
概括
这项研究用碳化 (SiC) 或碳化 (B4C) 颗粒强化复合材料,以抵抗洞穴侵蚀. 纳米复合材料在化试验中显著降低了侵蚀,提供了增强的材料保护.
科学领域:
- 材料科学 材料科学 材料科学
- 部落学 (tribology) 是一个学科.
- 表面工程是什么?表面工程是什么?
背景情况:
- 由蒸汽泡崩引起的洞穴侵蚀会严重损坏液体系统,如液压轮机和船舶螺旋.
- 有效的材料选择和表面工程对于减轻洞穴侵蚀至关重要.
- 碳化 (SiC) 和碳化 (B4C) 以其高硬度和耐磨耐磨性而闻名,使其成为合适的钢筋.
研究的目的:
- 调查纳米和微尺度SiC和B4C颗粒作为复合材料中强化剂的有效性,以防止化侵蚀.
- 为了比较散装样品和涂层板的磨损行为.
- 为了评估强化度 (6%和12%) 和颗粒大小 (纳米与微) 对材料性能的影响.
主要方法:
- 在6%和12%的比例中将SiC和B4C颗粒 (纳米和微) 纳入复合材料中.
- 在散装样本和1毫米厚的复合涂层上对板进行磨损测试.
- 在涂层片上进行化试验,直到达到稳定的质量损失.
主要成果:
- 在涂料和散装样品之间观察到明显的磨损行为.
- 用纳米复合材料涂层的样品通常比散装样品更容易磨损,除了12%的SiC和纯树脂.
- 涂料中纳米粒子比例较高与磨损增加相关,而摩擦系数保持在0.4至0.5.5之间.
- 所有纳米复合材料的积累侵蚀和侵蚀率较低,与纯树脂相比,在化试验中,6%的B4C是特别有效的.
结论:
- 用SiC和B4C增强的复合材料在减少洞穴侵蚀方面表现有前途.
- 与纯树脂相比,纳米复合材料涂层,特别是那些含有6%B4C的涂层,可以提供比纯树脂更好的防空蚀保护.
- 对优化颗粒大小和度进行进一步的研究是有必要的,以便在苛刻的流体系统中提高材料性能.
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