Based on the traditional technique, the new research achievements and progress in the introduction of metastable system, mixed dissolvent system and non equilibrium system are reported.
X-ray diffraction and analysis shows that no metastable phases are detected other than the three equilibrium phases in the tested systems.
射线衍射分析发现，除了这三个应该出现的平衡相之外，没有探测到其它亚稳相。
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These principles in elude heat transfer and recalescence, thermodynamics of metastable and non-equilibrium solidification, growth kinetics and solute redistribution.