Micro-computed tomography (micro-CT or μCT) is a standard tool for materials science research. This method allows high-resolution non-destructive analysis of the internal structure of an object. In this work, the internal structure of B4C-C composites has been examined using µCT for quantitative and qualitative evaluation. Boron carbide is a promising material for X-ray refractive lenses due to its properties - quite high refractive ability with high transmission of x-ray radiation. Experimental samples were fabricated by the spark plasma sintering method. It has been shown that μCT can be used to determine the parameters of the internal structure of B4C-C composite for further optimization of x-ray refractive optics manufacturing.
The requirement for the high-quality optics for the 4th generation synchrotrons is becoming particularly urgent nowadays. We present a laboratory complex “SynchrotronLike” designed for the X-ray optics tests and development of the X-ray optical techniques before their use on the synchrotron sources. This complex consists of four main parts: 1) microfocus Xray source MetalJet D2+ 70kV, 2) detector module that contains X-ray spectrometer and three X-ray cameras with different resolution and field of view, 3) Micro-Optics Test Bench for X-ray optics tests and development of the X-ray optical techniques, 4) X-ray Single Crystal Diagnostics Endstation for the X-ray diffraction microscopy experiments. This complex was successfully used for the preliminary tests of the X-ray refractive lenses made from polymer, epoxy, and diamond. Moreover, the ultracompact X-ray transfocators, diamond monochromators, and beam-splitters for the 4th generation synchrotron sources were also tested on the “SynchrotronLike”. The unique parameters of our laboratory source, such as high brightness and high beam coherency make it possible to implement versatile experimental synchrotron techniques. Consequently, we managed to get excellent results in the X-ray reflecto-interferometry and X-ray microradian diffraction. The results of the latter technique are presented in this paper.
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