Sample polishing

Raman spectroscopy is a non-destructive technique that is used in cosmochemistry for identification of minerals and to evaluate the bonding and composition of organic molecules. The technique does not require special sample preparation raw rock samples, polished sections, fine-grained powders, and liquids can be analyzed. Raman spectroscopy is the basis for several instruments that are under consideration for upcoming NASA missions. 

Copper polish rate vs. K9Fe(CN)6 concentration in 1 vol% NH4OH. (Four cm samples polished on a metallographer s wheel with 5 wt% alumina abrasive and 130 cm/sec.)... 

Fig. 4 AFM images and section analysis of samples polished with 2 wt.% slurries...

Energy-dispersive x-ray microanalysis was used to qualitatively verify the graded profile. A cross-sectioned sample, polished to a 1pm finish, was prepared. The measurement was conducted from the near-surface region to the center of the sample with step size of 50 pm using a JEOL 35C scanning electron microscope. The x-ray emission intensities for TiKot, AlKa, and ZrLot were collected at each point. 

Fig. 1. SEM image and EDX spectrum of the samples, polished surface of PLS (a) and HP (b), (c) the polytypic features of SiC, (d) EDX point analysis.

Slomkiewicz, P.M. The Sample Injector for the Gas Chromatograph, Especially for High Pressure Samples. Polish patent PI 177, 984, 18, February 2000. Slomkiewicz, P.M. The Variable Volume Sample Injector with Six-port Valve for Gas Chromatograph. Polish patent PI 177, 330, 5 November 1999. 

As a result of the whisker agglomerates observed in the 4th and 5th iteration samples, polished sections of selected Iteration 3 samples, which were HIP ed along with 4th and 5th iteration composites in the four HIP runs, were prepared for optical microscopy to examine the degree of whisker dispersion in the composites. Neither whisker agglomerates nor preferred orientations were observed in the... 

Using electrochemical tests to predict galvanic corrosion performance has the same caveats as in any other type of predictive testing. Conditions must be as close as possible to those being modeled. This includes not only solution chemistry and flow, but also the surface condition of the samples. Polished samples can behave quite differently from samples with more representative surface conditions emd corrosion products developed by pre-exposure. 

Niedzielski P, Siepak M (2003) Analytical methods for determining arsenic, antimony and selenium in environmental samples. Polish J Environ Stud... 

Buck and Fuhrmann [410] modified the spin casting film procedure by dropping the solution of a diblock copolymer onto an already rotating substrate, precleaned with an air plasma at 100 W for 1 min. They used air plasma for selective etching of the PMMA microphase in the PS/PMMA film, at a power of 40 W in steps of 5 s, keeping the sample in vacuum for 15 min after each etch period. Blend morphology and clay dispersion has been successfully studied by AFM of samples polished and physically and chemically etched, the latter by immersion in... 

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