陶基质复合油墨的增材制造和学表征,具有高纤维体积负载的陶基质复合油墨
Mitchell R Donoughue1, Joshua D Anderson2, Dev I Thawani2
1School of Mechanical Engineering, Purdue University, 610 Purdue Mall, West Lafayette, IN 47907 USA.
概括
陶矩阵复合材料 (CMC) 的增材制造现在可以实现高纤维负载. 振动辅助打印使CMCs可以用39.4%体积的碳纤维打印,以提高性能.
科学领域:
- 材料科学 材料科学 材料科学
- 添加剂制造 添加剂制造 添加剂制造
- 陶矩阵复合材料 陶矩阵复合材料
背景情况:
- 用纤维填充的陶矩阵复合材料 (CMC) 的增材制造 (AM) 允许通过纤维定向进行属性调整.
- 提高断裂性需要更高的纤维负载,但使用超过20%体积的纤维打印CMC具有挑战性.
研究的目的:
- 开发一种印刷CMC的方法,其纤维负载明显高于以前可实现的.
- 通过使用AM,研究将高度短碳纤维纳入预陶树脂的可行性.
主要方法:
- 使用粘氧化碳化预陶树脂.
- 嵌入的短碳纤维 (50 μm × 7 μm).
- 使用的振动辅助打印 (VAP) 技术.
主要成果:
- 成功打印了一种混合物,其碳纤维负载为39.4% (总负载为43.3%).
- 在打印的珠子中实现了全向纤维分布.
- 克服了印刷CMC带有高纤维负载的挑战.
结论:
- 振动辅助打印与合适的预陶树脂相结合,使高纤维载荷的CMC制造成为可能.
- 这一进步为增材制造的CMC增强机械性能打开了大门.
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