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Chemically, natural organic inhibitors contain S, N, O, P, and ring structures of heterocyclic compounds [16].
These compounds have their own mechanisms in protecting metals from corrosion.
Mechanism of Formation of Tannin Complexes with Fe3+ [36] Tannin compounds can form complex compounds with iron (II) and iron (III).
The two compounds will form a thin barrier layer on the metal surface as illustrated in Figure 6.
Aptuning, “Pharmaceutical Journal Of Indonesia Preliminary Studies on the Content of Phytochemical Compounds On Skin of Salak Fruit (Salaccazalacca),” Pharm.

Biomimetic processes have been widely studied in the aim of growing a bone-like apatite layer on different substrates by using simulated body fluids with an ionic concentration higher than that of SBF.
However, no peaks corresponding to a new bioactive compound were detected by this technique on the materials tested.
This indicates the presence of the compound identified by XRD.
According to the EDS analysis a compound with an atomic Ca/P ratio = 1.58-2.3 was obtained, which may correspond to octacalcium phosphate (OCP) [12].
Journal of Non- Crystalline Solids, 352, (2006) 3508–3511

This study aims to describe the results of characterization of physical properties and design comparation of knee implant. the characterization of the material was intended to determine the morphology using SEM, crystal structure using XRD, and chemical composition using XRF.
Phase identification of Ti6Al4V alloys.
Saini, Implant biomaterials: A comprehensive review, World Journal of Clinical Cases, 3 (2015) 1
Lin et al., Surface damage mitigation of Ti6Al4V alloy via thermal oxidation for oil and gas exploitation application: characterization of the microstructure and evaluation of the surface performance, RSC Advances, 7 (2017) 13517–13535
Murr et al., Microstructure and mechanical behavior of Ti–6Al–4V produced by rapid-layer manufacturing, for biomedical applications, Journal of the Mechanical Behavior of Biomedical Materials, 2, (2009) 20–32

In addition to steel as the metal component, an aluminium alloy (EN AW – 6082) was used.
Hybrid compounds that were heated up to 350°C showed a partial separation.
The upper two test series in Fig. 6 show the bonding strength of the compounds that were bonded by an adhesive and the two lower test series show the bonding strength of the compounds that were bonded by the resin of the CFRP.
The bonding of the compounds with adhesive has a significantly higher strength level.
Thus, at the same temperatures higher internal stresses in the aluminium-CFRP compounds arise.

Therefore, other protective compounds have been proposed such as yttrium silicate [66] or BSAS.
Another method to produce controlled cracking of a coating is to use mixtures of two compounds having different CTE's [92].
Thus the technique offers a lot of possibilities to deposit a large number of elements or compounds.
CVD coatings also show an interest in order to deposit refractory elements or compounds on thermally stable substrates.
Goward: Journal of Metals Vol. 22 (1970), p. 31 [18] B.K.

Organic compounds also can be determined by this method but the sensitivity and selectivity may be lower.
Among bioactive organic compounds, ascorbic acid (AA) and dopamine (DA) are very important.
Nanoparticles (metal, semiconductors, alloys) [3, 6, 7] and different nanostructures (“core-shell”, nanotubes, nanorods, graphene, and others) [5, 8, 9] are widely used to modify the surfaces of electrodes that are commonly used (such as impregnated carbon, glassy carbon, and carbon paste electrodes) to increase sensitivity and selectivity of the analysis.
Metal nanoparticles, especially of noble metals, show high catalytic activity in the electro-oxidation of organic compounds [10].
Lapin, Optimization of the process of nanoparticle fabrication by laser ablation of bulk targets in a liquid, Russian Physics Journal. 57, #3 (2015) In Print [12] R.

In this way, the present work aims at predicting the thermally induced stresses (localisation and level) through numerical simulations and then, at defining the main parameters which influence their development 1.
Brazing process Brazing is a welding process which produces the coalescence of two or more like or unlike base materials by means of a filler metal alloy with a lower melting point.
“Residual stresses in metal-ceramic bonded strips”, Journal of the American Ceramic Society, v.68, no.5, pp. 241-248
“Residual stress state of brazed ceramic/metal compounds”, Journal of the American Ceramic Society, v.73, no.5, pp. 1144-1149
“Thermal residual stresses in ceramic to metal brazed joints”, Journal of the American Ceramic Society, pp. 2141-2147

We note that an annealing at a higher temperature or equilibrating to 400°C made disappear all the residual organic compounds and crystallize completely the powder [9].
Structural properties Figure 2 shows the evolution of the diagram of diffraction of X-rays of the titanium oxide powder obtained after the evaporation of the organic compounds, reheated at 250°C.
With the aim of optimizing the conditions of deposition and in particular the impact of the speed of withdrawal, we have elaborate thin films obtained following only one dipping (mono-layers film) at various speeds of withdrawal.
Yoldas, Formation of titania-silica glasses by low temperature chemical polymerization, Journal of Non-Crystalline Solids 38 (1980) 81-86
Jones, Novel poly(n-butyl methacrylate)/titanium oxide alloys produced by the sol-gel process for titanium alkoxides, Journal of Applied Polymer Science 40 (1990) 1401–1420.

The organic inhibitors came from organic compounds containing groups with lone pairs of electrons or compounds containing P, N, S, O heteroatom groups [6].
These compounds can form coordinating covalent bonds because they have a heteroatom group that can donate electrons [23].
This atom performs the role of an electron donor that can combine with the iron in MS to generate complicated compounds.
This means that the fraction of Fe atoms found is lower because Fe forms complex compounds with TCPE molecules [44].
S., K.L Lin, Potentiodynamic Polarization Measurement of Sn–8.5Zn–XAl–0.5Ga Alloy in 3.5% NaCl Solution, Journal of Electrochemical Science. 153(8) (2006) B319-B324

This paper aims first at determining through numerical simulations the residual stresses induced by the cooling phase of the brazing process within standard tensile specimens of ceramic metal assemblies.
"Residual stresses in metal-ceramic bonded strips", Journal of the American Ceramic Society, v.68, no.5, pp. 241-248
"Residual stresses in ceramic-interlayer-metal joints", Journal of the American Ceramic Society, v.76, no.7, pp. 1661-1664
"Residual stress state of brazed ceramic/metal compounds", Journal of the American Ceramic Society, v.73, no.5, pp. 1144-1149
"Thermal residual stresses in ceramic to metal brazed joints", Journal of the American Ceramic Society, pp. 2141-2147