The micro hydrogen content and its formation in lanthanum metal is discussed by calculation and X-diffraction pattern.Micro hydrogen exists not as solute in La metal matrix,but as LaH_x.

• 通过计算和X衍射物相分析方法讨论了金属镧中氢的存在形式,实验和计算证实微量的氢在镧中不是以镧固溶体中溶质存在,而是以氢化镧的形式存在。