请使用高级语法及词汇润色以下句子：In figure 1 a the X-ray diffraction pattern of the mixed powder comprising pure Cu Cu-coated graphite and Cr2AlC is showcased The results indicate that the raw materials employed in t

Figure 1 (a) showcases the X-ray diffraction pattern of the mixed powder, comprising pure Cu, Cu-coated graphite, and Cr2AlC. The results obtained indicate that the raw materials used in the preparation of composites are devoid of any extraneous impurities. Additionally, no novel phases emerge during the mixing process. The phase of the mixed powder is composed of graphite, copper, and Cr2AlC. Figure 1 (b) depicts the morphology of the mixed powder. The image reveals the flake-like structure of graphite within the Cu-coated graphite particles, which are uniformly and entirely coated with copper. In contrast, the pure Cu particles adopt a spherical shape, while the Cr2AlC particles exhibit a lamellar morphology.