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The Wear Behavior of Pulse Current Electroforming Ni-P-SiC Composite Coatings Kung-Hsu Hou1, a, Ming-Chang Jeng2, b, Yung-Kang Shen 3, c and Ming-Der Ger 4, d 1 Department of Power Vehicle and Systems Engineering, Chung Cheng Institute of Technology, National Defense University, Tahsi, Taiwan, ROC 2 Department of Mechanical Engineering, National Central University, Chung-Li, Taiwan, ROC 3 Department of Mechanical Engineering, Lunghwa University of Science and Technology, Taoyuan, Taiwan, ROC 4 Department of Applied Chemistry, Chung Cheng Institute of Technology, National Defense University, Tahsi, Taiwan, ROC a khou@ccit.edu.tw, b jeng@cc.ncu.edu.tw, c ykshen@mail.me.lhu.edu.tw, d mdger@ccit.edu.tw Keywords: Composite plating, Ni-P-SiC, Wear resistance Abstract.
Introduction In recent years, the major micro structure materials used in electroforming technique as well as the LIGA process most were electroformed with Ni or Cu metal, and fewer were electroformed with Ni-Fe, Ni-Co alloy etc., however, these materials are restricted applied to severe environments such as high temperature, high pressure and corrosive circumstances.
Accordingly, this increment of wear resistance for Ni-P-SiC results from the strengthened structure of coating by dispersive finer SiC particles embed in layers as well as the improved adhesive wear mechanism caused by SiC particles contained in frictional interface between SKD steel and coatings. 0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 P(Wt.%) Polynomial of fit P Wt.% of P in coating layer Wear resistance of Ni-P-SiC (mg / m)-1 0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 2 3 4 5 6 7 8 9 10 11 12 13 SiC(Vol.%) Polynomial of fit SiC Vol.% of SiC in coating layer 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 2 3 4 5 6 7 8 9 10 11 12 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 2 3 4 5 6 7 8 9 10 11 12 N.W.R. of Ni-P Polynomial fit Normalized Wear Resistance -- N.W.R.
Wei: Materials Chemistry and Physics Vol. 78 (2003), p. 574 [8]T.
Ger: Materials Chemistry and Physics, Vol. 100(2006), p. 54 [11] K.H.

In the low temperature region higher C2F values predicted by MTDATA where it is treated as a solid solution allowing aluminium into the structure, therefore leading to lower C3A values.
Although α and α'-C2S solid solution models were available with FactSage, stoichiometric forms were used, otherwise the predictions ended with no C3S which was incompatible with Portland clinker chemistry, also the existing liquid did not show any sign of liquid immiscibility.
C3A and C2F can dissolve high levels of Fe and Al in their structures respectively [2,3] together with some Mg, K, Na and other trace elements, therefore treating C3A and C2F as pure compounds as well as any imperfections in the modelling of C2S or the liquid can unfortunately lead to unrealistic results.
Lawrence, in Lea's Chemistry of Cement, 4 th.
Taylor, Cement Chemistry, 2nd Ed., Thomas Telford, London, 1997

.,1999[6]; 3. on the instructive function[7-10].The previous works revealed that REE abundances and their characteristics (Ce and Eu anomalies, fractionation of light and heavy REEs etc) in groundwater systems were mainly controlled by the rocks through which they flowed over, pH, redox conditions, solution chemistry, organic and/or inorganic complexation, colloidal and particulate matter transport[11].
There is some tectonics in the dump site including Doucun anticline which is a secondary structure of Huashu-Tingzi synclinorium and Huanglong mount-Qinglong mount anticline as well as Jiaozishan-Xujiashan overthrust fault which makes the lower layer on the upper layer.
Results Groundwater chemistry.The differences of occurrence medium background, primitive chemical composition, natural recharge, runoff, discharge conditions lead components of groundwater change , which determines the groundwater compositions.Results by combining Sukaliefu classification with TDS show that garbage exudates is SO4+Cl-Na type water which means the concentration of salinity and dissolved solids is very high; With flow down-gradient, the groundwater samples from monitor wells also have relatively high concentration of salinity and dissolved solids and its compositions shifts towards SO4-Ca+Mg and SO4+Cl-Ca+Mg type water; Other water samples belong to HCO3+SO4-Ca and HCO3+SO4-Ca+Mg type water, which means relatively low concentration of dissolved solids; There are some unusual points that have high salinity in the downstream area.
Discussions Groundwater chemistry type analysis.Fig. 2 shows that the landfill site locates in the upstream of the research area, so the dissolved solids in the groundwater of the landfill site will not exceed that of the downstream without the dump built at the upstream, in fact the concentrations of the upstream area surpass that of the downstream area, which means the dump has definite effect on the groundwater.
Eu anomalies.The special chemical properties and structure of Eu results in low Eu in good runoff conditions of groundwater which has rapid water alternating, otherwise, with slow water alternating and deep water cycling the groundwater will has high Eu value [15].

The solid-phase doped traditional processes have been widely used to prepare varistor ceramic powders [3-4], but the composition segregation can be found by using this process because of the dopants mixing unevenly, which also affects the microstructure, barrier structure and electrical properties of varistor ceramic [5-7].
However, the lanthanated ammonia complex ions are not easy to form in the solution, since the rare earth La3+ had the electronic structure of the inert gas.
Speight: Lange’s handbook of chemistry. 16th Edition (McGRAW-HILL, New York, USA, 2005)
[19] Department of Chemistry,Wuhan University: Analytical Chemistry of Rare Earth Elements (Science Press, Beijing, China, 1981).

Type of adsorptions, whether physisorption, chemisorption, or chemisorption preceded by physisorption, highly depends on the structure of the inhibitor itself, the type of metal and media (such as pH, temperature, and amount of inhibitor).
Physisorption will occur if inhibitors structure does not allow to donate its lone pair (PEB) at metal.
Ibrahim, SchinopsisLorentzii extract as a green corrosion inhibitor for low carbon steel in 1 M HCl Solution, Journal of Industrial and Engineering Chemistry, JIEC 836, January 2012 [2].
Mumtaz A., Piper Longum extract as green corrosion inhibitor for aluminium in NAOH solution, Arabian Journal of Chemistry, April 2012 [6].
Z., Corrosion inhibitory action of some plant extracts on the corrosion of mild steel in acidic media, Arabian Journal of Chemistry, January 2012 [7].

., 141983 Dubna, Moscow region, Russian Federation 2Scientific and Educational Center "Fizhimbiofarm", Dubna State University, 141983 Dubna, Moscow region, Russia Federation 3Department of Theoretical and Applied Chemistry, Institute of Applied Chemistry and Ecology, Saint Petersburg State University of Industrial Technologies and Design, 191186 Saint-Peterburg, Russia Federation adar.slobodova@gmail.com, bgorshkova.raisa@gmail.coml Keywords: Protopectin, barofractionation, microgel, pectic substances, sunflower baskets.
In an isolated system, the decomposition process continues and water-soluble pectin substances (PS) with a branched structure are formed from the water-swelling fractions, which are then converted into low-molecular substances - oligosaccharides (POs).
Timely isolation of the extracted substances from the system can direct the protopectin degradation process towards the formation of a component with the required structure: PMg, PS, or POs.
Journal of Agricultural and Food Chemistry 68 (46) (2020) 12993-13000 [4] S.

., Vladivostok 690950, Russia 2Institute of Chemistry of FEB RAS, 159 pr. 100-letiya Vladivostoka, Vladivostok, 690022, Russia e-mail: amadiva@inbox.ru, bsvg21@hotmail.com, csls@ich.dvo.ru, digorimshin@gmail.com Keywords: magnesium alloys, protective coatings, plasma electrolytic oxidation, superdispersed polytetrafluoroethylene, protective coatings, corrosion, fluoropolymers.
Superdispersed polytetrafluoroethylene fabricated in the Institute of Chemistry FEB RAS is a unique material, which may be applied in many fields, including the creation of composite protective coatings on metals and alloys.
Since the morphological structure of PEO-coating contains the outer porous surface layer, the largest polymer amount must be embedded on the pore bottom, where the inner barrier layer has the smallest thickness and, therefore, the minimal electrical resistivity.
Experimental To fabricate the composite coating, particles of the superdispersed polytetrafluoroethylene (SPTFE) of the trademark FORUM®, which is the product of thermal gradient synthesis performed in Institute of Chemistry FEB RAS (by Dr.
Kainer, Study of the structure and corrosion behavior of PEO coatings on AM50 magnesium alloy by electrochemical impedance spectroscopy, Surf.

In this sense, the use of the foam structures as electrodes support also evidences a clear capacitance improvement.
In order to compare the diffusion of ions through the structure and the effect of the specific surface of the NiO films, coatings with a similar deposited mass (4.8 mg < m < 5.1 mg) were evaluated in terms of pseudocapacitance.
Journal of Materials Chemistry, 2011. 21(3): p. 671-679
Physical Chemistry Chemical Physics, 2014. 16(2): p. 785-791
Journal of Materials Chemistry, 2011. 21(47): p. 19093-19100

Its chemical structure was verified by FTIR and NMR.
The chemical structure of F-ODPS was verified by FTIR and NMR.
These adsorptions support a fluorinated alkyl siloxane structure.
Above analysis results show good consistence with the structure of F-ODPS.
New York. 1996 [2] Chemistry and Technology of lubricants.

This scientific field investigates the relationship between the structure of materials at atomic or molecular scales and their macroscopic properties.
It incorporates elements of applied physics and chemistry.