Hybrid casting – An investigation into the interface of high-pressure die-cast intrinsic aluminum-PEEK-CFRP hybrid composites
Hybrid casting – An investigation into the interface of high-pressure die-cast intrinsic aluminum-PEEK-CFRP hybrid composites
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DOI：
10.1088/1757-899x/1147/1/012022
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
A. Schmid;T. Haubold;K. Koschek;A. Marx;L. Pursche;A. Struss;K. Thiel;M. Wiesing;M. Busse
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文献类型：
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作者：
A. Schmid;T. Haubold;K. Koschek;A. Marx;L. Pursche;A. Struss;K. Thiel;M. Wiesing;M. Busse
塑料基纤维复合材料与轻金属的结合日益成为轻质建筑应用的焦点。迄今为止，传统的机械连接和粘接技术仍然是制造混杂复合材料的主要手段。这项工作的目的是创建一个混合复合材料的碳纤维增强塑料和铝在一个新的方式使用经济的高压压铸工艺，而不使用额外的连接元件。铸造过程意味着熔融金属（AlSi10MnMg）和耐热聚醚醚酮（PEEK）在约700 °C的短期温度下直接接触。材料和工艺参数导致材料过渡，在空间上分离CFRP和铝，同时保证搭接剪切强度高达22 MPa的牢固结合。这项工作的结构和化学特性的混合复合材料中的Al和PEEK之间的界面。PEEK和AlSi10MnMg合金之间的边界区域的TEM研究的结果表明，两种材料的局部连接没有间隙。此外，化学EDX，XPS和IR光谱结果表明，通过聚合物的热变化和直接接触区域中的键合可能性的相关改性形成键合的趋势。
The joining of plastic-based fiber composites and light metals is increasingly becoming the focus of lightweight construction applications. To date, conventional mechanical and adhesive joining techniques are still the predominant means to produce hybrid composites. The aim of this work was to create a hybrid composite of CFRP and aluminum in a novel way using the economic high-pressure die-casting process without the use of additional joining elements. The casting process implies the direct contact of molten metal (AlSi10MnMg) and thermally resistant polyetheretherketone (PEEK) under short-term temperatures of about 700 °C. The material and process parameters lead to a material transition that spatially separates the CFRP and the aluminum while guaranteeing a firm bond with lap shear strengths up to 22 MPa. This work structurally and chemically characterizes the interface between Al and PEEK in the hybrid composite. The results of the TEM investigations into the boundary region between PEEK and the AlSi10MnMg alloy show that both materials are locally joined without gaps. Furthermore, the chemical EDX, XPS and IR spectroscopy results indicate a tendency for the bond to form through the thermal alteration of the polymer and the associated modification of the bonding possibilities in the direct contact area.