TEM观察纳米金属粉末及纳米铜粉的异常表现

TEM Observation of the Abnormal Behavior of Nanometer Metal Powder and Nanometer Copper Powder

用透射电子显微镜观察铜、铝、镍金属粉末 ,发现其中金属铜粉在粒度达到纳米级时 ,熔化温度大幅度降低 ,与铝粉等相比有很大差异 .这一特性将有很大的潜在应用价值 .

Observing Cu, Al, Ni metal powder with an electron microscope, we discoveried that copper powder's melting point is much lower than the melting point of aluminum powder etc. When its size is reduced to nanometer scale. This characteristic will have great value in practical application.