请使用高级语法及词汇润色以下句子：In the 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

Figure 1 (a) presents the X-ray diffraction pattern of a composite powder consisting of pure Cu, Cu-coated graphite, and Cr2AlC. The results demonstrate the absence of any foreign impurities in the raw materials and the absence of new phases formed during the mixing process. The powder phase consists of graphite, copper, and Cr2AlC. Figure 1 (b) illustrates the morphology of the composite powder, revealing the flake-like structure of graphite within the uniformly and completely copper-coated Cu-coated graphite particles. In contrast, the pure Cu particles exhibit a spherical shape, while the Cr2AlC particles exhibit a lamellar morphology.