Process for nondestructively measuring nano grain stress condition
A nanoparticle and stress state technology, applied in the field of X-ray measurement, can solve the problem of inability to measure and obtain nanoparticle stress
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[0015] Take the extended X-ray absorption fine structure spectroscopy EXAFS measurement of the stress of silver nanoparticles in glass as an example:
[0016] 1. Preparation of silver nanoparticle glass: Three silver nanoparticle glass samples were prepared by ion exchange method, namely Ag1, Ag2, and Ag3, and the silver nanoparticles in the samples Ag1, Ag2 and Ag3 were observed by Phillips CM200 transmission electron microscope (TEM). 7nm, 4nm and 2.8nm respectively (see Figure 1).
[0017] 2. Characterization of silver nanoparticle structure: the measurement temperature range is 12K-298K. Ag K-edge X-ray absorption fine structure spectra were analyzed with the commercial UWXAFS3.0 package. Ag K-edge X-ray absorption fine structure spectra were collected at the X1 experimental station of the Synchrotron Radiation Center in Hamburg, Germany. The theoretical phase function and amplitude function of Ag were calculated using the theoretical EXAFS equation, and they were used t...
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