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讨论了Ａｌ基合金在高温相变储能过程中Ｆｅ的扩散及其控制。所用的储能元件是由耐热的Ｆｅ－Ｃ合金作外壳和Ａｌ基合金作内核所组成的，在８００℃高温服役时，Ｆｅ将在Ａｌ液中进行扩散，导致储能材料热物理性能下降，使用寿命缩短。采用化学分析、金相检验、能谱分析和ｘ射线衍射等手段，研究Ｆｅ在Ａｌ基合金中的扩散；观察到一系列的Ｆｅ－Ｓｉ－Ａｌ金属化合物，探讨了储能元件的分层问题和Ｓｉ含量对非沉淀层Ｆｅ含量的影响．采用表面处理技术能有效地抑制Ｆｅ在Ａｌ基合金中的扩散，从而大大提高储能元件的使用寿命。
The diffusion and control of Fe in Al-based alloys during high temperature transformation are discussed. The energy storage element is made of heat-resistant Fe-C alloy and Al-based alloy as the core. When heated at 800 ℃, Fe will diffuse in the Al liquid and lead to the decrease of the thermal physical properties of the energy storage material , Shortened service life. The diffusion of Fe in Al-based alloys was investigated by means of chemical analysis, metallographic examination, energy spectrum analysis and X-ray diffraction. A series of Fe-Si-Al metal compounds were observed and the delamination of energy storage devices was discussed And Si content on the content of non-precipitated Fe. The use of surface treatment technology can effectively inhibit the diffusion of Fe in Al-based alloys, thus greatly improving the life of energy storage components.