Influence of the aluminum die casting process on PEEK layered CFRP in the manufacturing of a hybrid connection
Influence of the aluminum die casting process on PEEK layered CFRP in the manufacturing of a hybrid connection
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DOI：
10.1088/1757-899x/1147/1/012018
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
A. Marx;A. Schmid;T. Haubold;L. Pursche;P. Schiebel;A. Herrmann
中科院分区：
文献类型：
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作者：
A. Marx;A. Schmid;T. Haubold;L. Pursche;P. Schiebel;A. Herrmann
轻量化设计作为一项关键技术被广泛应用于各种领域，以实现显著的减重。由于其低密度与高强度相结合，CFRP和铝是预定的轻质材料。然而，这种材料组合的接合仍然使用普通技术如粘合剂或机械接合来执行。这种材料组合连接的一个主要挑战是腐蚀行为。因此，利用铝的HPDC工艺，开发了一种新的CFRP与铝的混合连接方法。在高效的HPDC过程中，CFRP结构用铝（AlSi10MnMg）重新铸造。为了抵抗来自液态铝熔体的短暂出现的700 °C的温度，CFRP涂覆有PEEK层。这导致了材料过渡，空间分离CFRP和铝，以及拉伸剪切强度高达22 MPa的混合连接。在这项工作中，几个处理步骤对PEEK层和CFRP结构的影响进行了研究。DSC和TGA结果表明，PEEK的热性能没有显着变化。成像调查显示，热诱导的混合试样的PEEK层的HPDC过程后的外观挥发。
Lightweight design is used as a key technology in a variety of fields to achieve significant weight reduction. Due to its low density in combination with high strength, CFRP and aluminum are predestinated lightweight materials. However, the joining of this material combination is still performed using common technologies like adhesive or mechanical joining. A major challenge at the joining of this material combination is the corrosion behavior. Therefore a novel approach of a hybrid connection between CFRP and aluminum was developed by using the HPDC process of aluminum. During efficient HPDC process, a CFRP structure is recast with aluminum (AlSi10MnMg). To resist the shortly appearing temperature of 700 °C from the liquid aluminum melt, the CFRP is coated with a layer of PEEK. This leads to a material transition, which spatial separates CFRP and aluminum and a hybrid connection with tensile shear strengths up to 22 MPa. Within this work, the influence of the several processing steps on the PEEK layer and the structure of the CFRP was investigated. DSC and TGA results show no significant change on thermal properties of the PEEK. Imaging investigations show the appearance of heat induced volatilizations in the PEEK layer of the hybrid specimens after the HPDC process.