借助于XRD,TG-DSC等技术研究了掺杂镧系金属对氢化燃烧合成镁镍储氢合金合成条件及合金性能的影响.结果表明:掺杂镧系金属的试样在氢气压力为2.0 MPa,600℃下保温2 h可大量形成Mg2NiH4;氢气压力越大,形成Mg2NiH4越多;过高的合成温度和过长的保温时间极不利于Mg2NiH4的形成;镧系金属的掺入使Mg2NiH4晶胞发生了一定的畸变;掺杂镧系金属的Mg2NiH4放氢温度为271.7℃左右,比未掺杂的降低了110℃左右;掺杂镧系金属试样的总放氢量可达3.21%(质量分数,下同);掺杂镧系金属的试样在300℃,0.1 MPa下的放氢时间为7 min～8 min;活化可适当提高吸放氢量.
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