VD and working procedure.Experiments showed that major of the LF step foreign inclusions are aluminium sesquioxide. spotted non-deforming inclusion and sulphuret.

VD及成材工序现场取样.系统析了各工序中夹杂物的行..数量.变化历程及影响因.实验结果表明.

The indium sesquioxide with over 99% purity can be prepared by a decomposition of nitric acid. The method was characterized by fewer equipments, simple operation, low cost and quick yield.

采用硝酸法可制取纯度高于99%的三氧化二铟.本法具有设备少、操作简单、成本低、见效快等优点.