It can be seen from X-raydiffractions that the dispersion strengthening phases are formed such as Fe_2C, Fe_3C_2, FeMo, Fe_3Mo_2,MOC, MoCx, Mo_2C, Fe_2W, Fe_7W_6, WC and W_2C for the dualimplantation.

• X射线衍射分析表明，注入层中出现了弥散的FE2C，Fe5C2，FeMo，Fe3M02，MoC，MoCx，Mo2C，Fe2w，Fe7W6，WC和W2C相。