A STRUCTURAL OBSERVATION ON IONIZED RE METALLIZING LAYER OF PURE IRON
WU Yaqiao; YANG Lin; ZHAO Zhongjian; GAO Lifeng XU Yongbo; LU Zhenjia(Shenyang Polytechnic University; Shenyang 110023) (Laboratory; of Atomic Imaging of Solids; Institute of Metal Research; Chinese Academy; of Sciences; Shenyang 110015)(State Key Laborutory for Fatigue and Fracture of Materials; Institute of MetalResearch; Chinese Academy of Sciences; Shenyang 110015)
Cite this article:
WU Yaqiao; YANG Lin; ZHAO Zhongjian; GAO Lifeng XU Yongbo; LU Zhenjia(Shenyang Polytechnic University; Shenyang 110023) (Laboratory; of Atomic Imaging of Solids; Institute of Metal Research; Chinese Academy; of Sciences; Shenyang 110015)(State Key Laborutory for Fatigue and Fracture of Materials; Institute of MetalResearch; Chinese Academy of Sciences; Shenyang 110015). A STRUCTURAL OBSERVATION ON IONIZED RE METALLIZING LAYER OF PURE IRON. Acta Metall Sin, 1996, 32(6): 594-598.
Abstract Ce and La atoms were successfully metallized on pure iron by using glow discharge method. The structural observation of the surface layer showed that there are three kinds of layers below surface, i.e, solid solution, penetrating and transition. Analysis by EPMA and TEM shows that RE elements exist as intermetallic compound (Ce, La)Fe_7 and solute in α-Fe solid solution. The trace carbon atoms soluted in α-Fe may diffuse towards to the surface and segregate under surface layer of the specimen. Investigations by SAED and HRLM show that a preferred orientation relationship between α-Fe and (Ce,La)Fe7 is as follows: (011)α-Fe∥(110)CeFe7,[111] α-Fe∥[001]CeFe7.
WU Yaqiao; YANG Lin; ZHAO Zhongjian; GAO Lifeng;XU Yongbo; LU Zhenjia (Polytechnic University; Shenyang 110023)(Laboratory of Atomic Imaging of Solids; Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110015)( State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110015)(Manuscript received 1995-12-12). SURFACE LAYER STRUCTURE OF PURE IRON TREATED BY ION-RE-NITRIDATION[J]. 金属学报, 1996, 32(7): 705-710.
