Ceramic sample, compositional profile

Any given analyzed sample of pottery is a small subset of a larger ceramic system. Pottery is formed from clays and nonplastic constituents according to shared customs of the local pottery-making group as well as idiosyncratic or stochastic effects. The compositional profile that is derived from the chemical analysis of a ceramic sample, therefore, is a weighted expression of both natural and cultural constraints. 

If the rf source is applied to the analysis of conducting bulk samples its figures of merit are very similar to those of the dc source [4.208]. This is also shown by comparative depth-profile analyses of commercial coatings an steel [4.209, 4.210]. The capability of the rf source is, however, unsurpassed in the analysis of poorly or nonconducting materials, e.g. anodic alumina films [4.211], chemical vapor deposition (CVD)-coated tool steels [4.212], composite materials such as ceramic coated steel [4.213], coated glass surfaces [4.214], and polymer coatings [4.209, 4.215, 4.216]. These coatings are used for automotive body parts and consist of a number of distinct polymer layers on a metallic substrate. The total thickness of the paint layers is typically more than 100 pm. An example of a quantitative depth profile on prepainted metal-coated steel is shown as in Fig. 4.39. 

Data treatment, tin and lead concentrations in majolica pottery production, 383-384 Defixiones. See Curse tablets Deh Luran Plain, ceramic glaze samples for compositional analysis, 424-427,434,436 137,440 Depth profiling, coating samples from Little Lost River Cave, 162-163 Detection limits in LA-ICP-MS protocol testing copper alloy analysis, 341 Wari ceramics elemental analysis, 353-354/... 

Depth concentration measurement is an important application of surface analytical methods. Examples are depth distribution of additives in plastics, or interface analysis where polymers are in contact with metals or ceramics. All surface methods with a good depth resolution (XPS, AES, SIMS) are suitable for depth or profile measurements. Complete multilayer coating systems require analytical methods that are applicable to small sample sizes and low concentrations. Techniques for obtaining chemical composition and component distribution depth profiles for automotive coating systems, both in-plane (or slab) microtomy and cross-section microtomy, include /xETIR, /xRS, ToE-SIMS, optical microscopy, TEM, as well as solvent extraction followed by HPLC, as illustrated by Adamsons et al. [5]. Surface and interface/interphase analysis can now be done routinely on both simple monolayer coatings and complex multicomponent, multilayered... 

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