A method for in-situ observation of nucleation and growth of copper or copper alloy by transmission electron microscope

Abstract

The present application relates to a kind of in-situ transmission electron microscopy observation copper or copper alloy nucleation growth method, belong to detection technical field.The method of the present application mixes the raw material of copper or the metal element powder needed for preparing copper alloy and amorphous medium glass material uniformly, heats to melting temperature and keeps temperature, obtains solid amorphous precursor with furnace cooling;The solid amorphous precursor is ground into the particle of 300-500nm particle size, and solid amorphous precursor powder is obtained;Solid amorphous precursor powder is uniformly dispersed on the copper screen for transmission electron microscopy observation, and the copper screen loaded with solid amorphous precursor powder is annealed heat treatment, so that copper or copper alloy in solid amorphous precursor powder reaches nucleation critical point, and in-situ observation sample is obtained;In-situ observation sample is placed in transmission electron microscope, adjusts the electron beam irradiation energy density of transmission electron microscope and irradiates in-situ observation sample, induces copper or copper alloy nucleation growth, and the nucleation crystallization growth process of copper or copper alloy in in-situ observation sample.

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