Identification of Phase Composition of Tungsten Carbide Coating Materials by Raman Spectrum AITranslate
Abstract AITranslate
Taking hot-pressed sintered tungsten carbide(WC)and gas carburized WC coatings as the re-search objects,their microstructure,element composition,crystal orientation,phase composition and distri-bution were characterized by in-situ SEM,EDS,EBSD,XRD and Raman spectrometer.The analysis results show that the coating cross-section contains WC,W2C and amorphous phase.The grain size of WC main phase is about 3μm,the thickness is about 15μm,and it is hexagonal and polycrystalline.The main peak positions in Raman spectrum of WC layer are consistent with the characteristic peak positions of WC(A1110cm-1 and A2166cm-1),and the peak shape and position are consistent with those of sintered WC.WC grains grow along(101)crystal plane,showing apreferential orientation and resulting in increased intensi-ty of 75cm-1 Raman peak,which is consistent with XRD results.The crystal structure of W2C is hexago-nal,and there are two kinds of W2C microstructures in the coating:Fine grains of uniform distribution are near the surface layer and the abnormally grown single crystals are near the substrate.The main Raman peak positions of W2C area are consistent with W2C characteristic peak positions(Eg128.5cm-1 and A1g 220cm-1),and they have no interference with WC main peaks.The amorphous layer with a width of about 2μm is located between the W2C fine-grained area and the substrate,and it contains about 2%(molar frac-tion)Fe impurity.Raman spectrum of the amorphous layer shows peakless bulge,which is well distin-guished from other phases.Raman spectrum analysis of the coating verifies the phase distribution results obtained by EBSD,and the phase composition information of the coating material cross-section is enriched.Due to the complexity of EBSD sample preparation,Raman spectrum has an irreplaceable advantage in the rapid identification of WC,W2C and amorphous phase.
KeyWords AITranslate
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Basic Information:
DOI：
Chinese Library Classification Number:O657.3[理学—分析化学]
Citation Information:
Taking hot-pressed sintered tungsten carbide(WC)and gas carburized WC coatings as the re-search objects,their microstructure,element composition,crystal orientation,phase composition and distri-bution were characterized by in-situ SEM,EDS,EBSD,XRD and Raman spectrometer.The analysis results show that the coating cross-section contains WC,W2C and amorphous phase.The grain size of WC main phase is about 3μm,the thickness is about 15μm,and it is hexagonal and polycrystalline.The main peak positions in Raman spectrum of WC layer are consistent with the characteristic peak positions of WC(A1110cm-1 and A2166cm-1),and the peak shape and position are consistent with those of sintered WC.WC grains grow along(101)crystal plane,showing apreferential orientation and resulting in increased intensi-ty of 75cm-1 Raman peak,which is consistent with XRD results.The crystal structure of W2C is hexago-nal,and there are two kinds of W2C microstructures in the coating:Fine grains of uniform distribution are near the surface layer and the abnormally grown single crystals are near the substrate.The main Raman peak positions of W2C area are consistent with W2C characteristic peak positions(Eg128.5cm-1 and A1g 220cm-1),and they have no interference with WC main peaks.The amorphous layer with a width of about 2μm is located between the W2C fine-grained area and the substrate,and it contains about 2%(molar frac-tion)Fe impurity.Raman spectrum of the amorphous layer shows peakless bulge,which is well distin-guished from other phases.Raman spectrum analysis of the coating verifies the phase distribution results obtained by EBSD,and the phase composition information of the coating material cross-section is enriched.Due to the complexity of EBSD sample preparation,Raman spectrum has an irreplaceable advantage in the rapid identification of WC,W2C and amorphous phase.
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| GB/T 7714-2015 | [1] WANG Ding-ding, MA Xian, WANG Jun, et al. Identification of Phase Composition of Tungsten Carbide Coating Materials by Raman Spectrum[J]. Rare Metals and Cemented Carbides, 2022(1): 37-41. |
| MLA | [1] WANG Ding-ding, et al., "Identification of Phase Composition of Tungsten Carbide Coating Materials by Raman Spectrum." Rare Metals and Cemented Carbides, no. 1, 2022, pp. 37-41. |
| APA | [1] WANG Ding-ding, MA Xian, WANG Jun, & AN Xiao-jiao. (2022). Identification of Phase Composition of Tungsten Carbide Coating Materials by Raman Spectrum. Rare Metals and Cemented Carbides(1), 37-41. |
| IEEE | [1] WANG Ding-ding, MA Xian, WANG Jun, and AN Xiao-jiao, "Identification of Phase Composition of Tungsten Carbide Coating Materials by Raman Spectrum," Rare Metals and Cemented Carbides, no. 1, pp. 37-41, 2022. keywords: {Raman spectrum;phase composition;coating material;WC;WC;amorphous phase} |