Thermal conductivity of advanced TiC reinforced metal matrix composites for polymer processing applications
Thermal conductivity of advanced TiC reinforced metal matrix composites for polymer processing applications
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DOI：
10.1177/0021998313516143
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发表时间：
2015-01
影响因子：
2.9
通讯作者：
J. Wilzer;M. Windmann;S. Weber;H. Hill;A. V. Bennekom;W. Theisen
中科院分区：
文献类型：
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作者：
J. Wilzer;M. Windmann;S. Weber;H. Hill;A. V. Bennekom;W. Theisen
用于制造聚合物的工具通常需要具有低导热率，例如用于造粒，因为这降低了聚合物喷嘴在退出时被熔融聚合物凝固堵塞的风险。最近，先进的耐腐蚀和耐磨金属基复合材料（MMC）被用于造粒工具。因此，就聚合物加工而言，了解硬质相和金属基体贡献如何影响 MMC 的导热率非常重要。在本研究中，对 TiC 增强耐腐蚀耐磨 MMC 的导热系数进行了分析。特别是分析了 TiC 和金属基体之间的化学相互扩散对导热系数的影响。结果表明，化学成分的变化会导致 TiC 热导率明显下降，在检查 MMC 热导率时必须考虑这一点。
Tools used for fabricating polymers are often required to have low thermal conductivities, e.g. for pelletizing, because this lowers the risk of the polymer nozzle being obstructed by molten polymer solidifying as it exits. Latterly, advanced corrosion and wear resistant metal matrix composites (MMCs) are used for pelletizing tools. Therefore, with respect to polymer processing it is important to know how the thermal conductivity of MMC gets influenced by hard phase and metal matrix contribution. In this study, the thermal conductivity of a TiC reinforced corrosion and wear resistant MMC gets analyzed. Especially the influence of chemical interdiffusion between TiC and metal matrix on the resulting thermal conductivity gets analyzed. It is shown that changes in the chemical composition lead to distinct decrease in thermal conductivity of the TiC which has to be considered when MMC thermal conductivities have to be examined.