分别采用 XRD 和 SEM 对锂硼合金进行了测试，结果显示锂硼合金为锂硼化合物和自由锂组成的双相结构。采用溶样、加热、过滤、清洗的新方法处理样品，取过滤清液酸碱中和滴定测试了样品中的总锂含量，并探讨了影响测试结果的几个主要因素。尝试在全程氩气保护下，采用 DSC 方法测试样品200℃附近的吸热数据，通过计算得到合金中自由锂含量。%Li-B alloys were tested by XRD and SEM,the results showed that Li-B alloys were two-phase structure composed of lithium-boron compounds and free-lithium. Samples were processed by a new meth-od of dissolving,heating,filtrating and cleaning. The total lithium content was tested using the method of acid-base titration. Several major factors that affect the test results were discussed. The endothermic peak around 200 ℃ was tested by DSC under argon protection,and then the free-state lithium content was cal-culated.
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