在金刚石压砧装置上，采用电阻和电容测量方法，研究了粒径为１５～１８ｎｍ和８０ｎｍ的纳米晶Ｓｉ在室温下、２４ＧＰａ内的电阻、电容与压力的关系。实验结果表明，它们分别在１９～１７ＧＰａ和１４ＧＰａ左右发生了金属化相变 The resistance, capacitance and pressure of nanocrystalline Si with particle sizes of 15 ~ 18nm and 80nm at room temperature under 24GPa were studied by means of resistance and capacitance measurements on a diamond anvil device. The experimental results show that they are metallurgical phase transition at about 19 ~ 17GPa and 14GPa respectively