The change in peak bights of the X-ray diffraction spectra demonstrates that CoSi and Co_2Si grow side by side before all cobalt is consumed, and after that CoSi continues to grow at the expense of Co_2Si.

• 证明:在金属钴耗尽前Co_2Si和CoSi共同生长,金属钴耗尽后Co_2Si逐渐向CoSi转化。