王坚, 方正知. NaCl型面心立方CrC的形成[J]. 工程科学学报, 1992, 14(4): 478-482. DOI: 10.13374/j.issn1001-053x.1992.04.030
引用本文: 王坚, 方正知. NaCl型面心立方CrC的形成[J]. 工程科学学报, 1992, 14(4): 478-482. DOI: 10.13374/j.issn1001-053x.1992.04.030
shu
Wang Jian, Fang Zhengzhi. NaCl Type fcc Cr Carbide Formation[J]. Chinese Journal of Engineering, 1992, 14(4): 478-482. DOI: 10.13374/j.issn1001-053x.1992.04.030
Citation: Wang Jian, Fang Zhengzhi. NaCl Type fcc Cr Carbide Formation[J]. Chinese Journal of Engineering, 1992, 14(4): 478-482. DOI: 10.13374/j.issn1001-053x.1992.04.030
shu

NaCl型面心立方CrC的形成

NaCl Type fcc Cr Carbide Formation

    摘要
  • 摘要: 用离子注入方法形成了NaCl型面心立方CrC。电子衍射确定其晶格常数为0.403nm。原位加热到250℃左右,其电子衍射环消失,表明它是亚稳的。按Miedma形成热计算方法计算,它的形成热为-29.4kJ/mol,说明它可能是一个亚稳相,俄歇谱也证实这一碳化相的存在。

     

    Abstract: A simple fcc Cr carbide was formed for the firal time by carbon ion implantation into Cr thin filma. Lattice constant determined by electron diffraction was 0.403nm. In situ annealing in TEM showed it exited upto a temperature about 250℃. The carbide phase was further confirmed by Auerg electron spectra. The meidema heat of formation was - 29.4kJ/mbl.

     

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