用Auger能谱研究了灰口铸铁和球墨铸铁中硫在铁/石墨界面的偏析。结果表明:硫在灰口铸铁的界面处发生非平衡偏析,而在球墨铸铁中无此现象。以上现象导致硫在两种铸铁的铁/石墨界面外的含量差异较大,可用两种铸铁凝固过程的差异加以解释。
The segregation of sulphur at iron/graphite interfaces in both grey and nodular ironwas investigated with AES. Sulphur was found to nonequilibratorily segregated at the interfaces ingrey iron, but not in nodular iron. Such different behaviors of segregation, which will exaggeratethe difference of grey and nodular iron in sulphur content at ircn/graphite interfaces, might bederived from the difference of solidification process between the two irons.
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