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Characterization of Hydrogen Storage Alloy Mg_2Co Synthesized by Bulk Mechanical Alloying

机译:大块机械合金化合成储氢合金Mg_2Co的表征

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摘要

Mg_2Co was successfully synthesized by the solid-state reaction from Mg and Co powder mixture via bulk mechanical alloying (BMA) and annealing. The sample was analyzed by X-ray powder diffraction (XRD), differential scanning calorimetry (DSC) and differential thermal analysis (DTA). Hydrogen absorption and desorption behavior was described by pressure-composition-isotherms (PCT). In the temperature range of 633K there are two plateau pressures in the pressure region of 0.6~3MPa in the absorption isotherms and only one plateau pressure in the desorption isotherms. XRD patterns of the alloy hydrides revealed the presence of Mg_2CoH_5.
机译:Mg_2Co的固相反应是由Mg和Co的粉末混合物通过本体机械合金化(BMA)和退火成功地合成的。通过X射线粉末衍射(XRD),差示扫描量热法(DSC)和差示热分析(DTA)分析样品。氢的吸收和解吸行为由压力组成等温线(PCT)描述。在633K的温度范围内,吸收等温线在0.6〜3MPa的压力范围内有两个平台压力,而解吸等温线只有一个平台压力。合金氢化物的XRD图谱表明存在Mg_2CoH_5。

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