Metallographic polishing cross-sectional, polished samples

Cross-sections of the embedded layers were also investigated by SEM. The substrates were cut using a diamond cutting blade about 2-3 mm from the end and mounted into a mixture of cold mounting epoxy resin and an epoxy system (1 1) for metallographic preparation. Cross-sections of the samples were polished with silicon carbide (SiC) grinding papers (180, 500, 1200,2400,4000) and with 1.0 and 0.3 pm of alpha alumina suspension. 

Similar to prepared metallographic samples, the injection molded samples were cut along the flow direction, smoothed, and polished in order to expose their internal surface. After proper etching, the treated surfaces of the flank cross-section were photographed using a polarized light optical microscopy. Based on the color differences between the TLCP and matrix, volume fraction and aspect ratio of the TLCP fibers were measured [23]. 

The tube sample was cross sectioned, mounted, polished, and etched for metallographic examination. A 3% nital etchant (100 mL ethanol and 3 mL HNO3) was used to reveal the existing microstructure. Metallographic examinations were conducted via optical microscopy. Figure 3.5 shows... 

Metallographic samples were prepared from longitudinal cross sections of the composites by gentle grinding and polishing. Microstructures of the composites were examined by using optical and scanning electron microscopes. The volume... 

The Ax value determined from the metallographic cross polished section is -10 pm. Calculation of the Ni3Ta density by the measured thickness layer Ax and the specific change mass Am of the sample results in a value p-12.5 g/cm. It agrees well with the additive value p= 2.6 g/cm at 750 C. The error in this case is -10%, which is much lower than that of experimental determination of metallic interdiffusion coefficients. The result of calculation D -3T0- 2 cmVs agrees satisfactorily with the data [11] (Z)=2.510 2 cm%) and [2] (D=2.610 > cm /s), revised to 750 C, which points to the validity of the assumptions and the possibility of evaluating the in-terdiffsion coefficients by the above method. 

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