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Besides, each iron compound has a different characteristic, starting with magnetic to ferromagnetic.
Besides, this compound is also easier to purify.
The hematite compounds exist in an odorless powder with red, brown, or black colors.
Yuan, “Biomass material derived hierarchical porous TiO2: Adjustable pore size for protein adsorption,” Journal of Alloys and Compounds, vol. 829. 2020. doi: 10.1016/j.jallcom.2020.154512
Alloys Compd., vol. 718, pp. 46–52, 2017, doi: 10.1016/j.jallcom.2017.05.100

The analysis of the microstructure of welded Joints FSW aims to highlight the effects produced by the welding process on the structure of the materials.
Mahto, Characterizations of weld defects, intermetallic compounds and mechanical properties of friction stir lap welded dissimilar alloys, Materials Characterization, (2020)
Kim, Three defect types in friction stir welding of aluminum die casting alloy, Materials Science and Engineering, (2006) 250-254 [10] R.
Ahmad, Advanced numerical modelling of friction stir welded low alloy steel, Journal of Manufacturing Processes, (2018) 625-636
Imam, Microstructural control and mechanical properties in friction stir welding of medium carbon low alloy S45C steel, Material Science&Engineering A, (2015) 24-34

The solution proposed in the paper is to create a variable heat flow that allows the melting of the solder alloy, but at the same time to reduce the thermal load of the glass support layer.
The resistive source provides an amount of energy to ensure a temperature in the range of 60-140oC, the difference to the melting point of the solder alloy being transferred locally by ultrasonic pulses.
Experimental procedure The aims of the experimental program were: confirmation of the mathematical model of temperature at the solder level, evaluation of the solder’s behaviour during the hybrid heating process and qualitative evaluation of the bonds.
Park, Study on Mitigation Method of Solder Corrosion for Crystalline Silicon Photovoltaic Modules, International Journal of Photoenergy, Volume 2014, Article ID 809075, 2014, http://dx.doi.org/10.1155/2014/809075 [9] G.
Zhong, et. al., Mechanical properties of intermetallic compounds in solder joints, 11th Int.

Biermann, International Journal of Fatigue 2014, 65, 9 – 17.
Aneziris, International Journal of Solids and Structures 2015, 66, 207 – 217.
Rafaja, Journal of Composite Materials 2015, 49 (28), 3567 – 3579.
Nie, Journal of Alloys and Compounds 2016, 685, 869 – 880.
Downey, International Journal of Powder Metallurgy 1971, 15 – 25

Ni-MH Batteries The positive electrode active material of the Ni-MH batteries is nickel hydroxide,the negative electrode active material is the storage hydrogen alloy, the electrolyte is a potassium hydroxide solution , the main reaction of the battery is: Ni(OH)2+OH=NiOOH+H2O+e- M+H2O+e-=MHab+OH- Ni(OH)2+M=NiOOH+MHab Where M is the hydrogen storage alloy; MHab is the storage of storage hydrogen alloy with hydrogen.
When the battery charges, the positive electrode hydrogen will move into the storage hydrogen alloy of the negative electrode, the discharge process is reversed.
Lithium-ion Battery The negative electrode of the lithium-ion batteries uses the lithium-carbon compound, the lithium transition metal oxide is the positive electrode, an organic liquid or solid polymer is the electrolyte.
Table 4 Different charging current condition of the lithium-ion battery charging time trial discharge current time total time starting voltage （V） termination voltage（V） Ah Wh C/1 12.28,15:20-15:55 35’ 10.79 12.59 20.95 258.86 C/2 12.27,8:30-10:30 2h 10.90 12.67 37.80 466.79 C/3 12.26,14:00-17:00 5h 11.23 12.64 44.82 546.09 C/3 12.27,13:00-16:00 2h50’59” 11.06 12.62 44.64 540.77 Figure 3 Different charging current condition of the lithium-ion battery charging time trial Conclusion Based on the analysis of the mechanical theory as the foundation, designed the soccer robot pick the ball institutions optimal design process, found aim function, select design variables and the corresponding optimization algorithm to optimize a complete set of institutions.
Chemical Journal,2011 (17):86-89 [5] in Beijing hospital, Wang Qiang, Chen Wei.

Influence of Sputtering Temperature and Layer Thickness on the Electrical Performance of Thin Film Strain Sensors Consisting of Nickel-Carbon Composite Christos Karapepas1,a*, Daisy Nestler2,b and Guntram Wagner1,c 1Chemnitz University of Technology, Faculty of Mechanical Engineering, Institute of Materials Science and Engineering, Professorship of Composites and Material Compounds, Chemnitz, Germany 2Chemnitz University of Technology, Faculty of Mechanical Engineering, Institute of Lightweight Structures, Endowed Chair Textile Plastic Composites and Hybrid Compounds, Chemnitz, Germany achristos.karapepas@mb.tu-chemnitz.de, bdaisy.nestler@mb.tu-chemnitz.de, cguntram.wagner@mb.tu-chemnitz.de Keywords: Structural health monitoring, thin film, strain sensor, Raman spectroscopy, magnetron sputtering, hybrid laminates, nickel-carbon composites, gauge factor.
The aim of this work was to evaluate the influence of the layer thickness as well as the elevated temperature during the sputtering process on the electrical performance of Ni-C strain sensors.
Nendel, et al., Innovative hybrid laminates of aluminium alloy foils and fibre‐reinforced thermoplastic layers, Materials Science and Engineering Technology 47 (11) (2016) 1121-1131.
Journal of Reinforced Plastics and Composites 37(22) (2018) 1378-1384.
Journal of Physics Condensed Matter 26 (41) (2014) 415501.

Ceramics are often more resistant to oxidation, corrosion and wear as well as being better thermal insulators than metals and their alloys, for this reason(s) ceramics are better, the most accepted and widely used materials for thermal barrier coatings [12].
The aim of this study is to review the contributions of ceramic thermal barrier coatings in improving the efficiency of some of the automotive internal combustion engine and turbocharger components operating under severe conditions of temperature.
The advantages of ceramics inherent properties such as their resistances to both oxidation, hot corrosion and wear as well as their high thermal insulation has no doubt gave it an offer hand over metals and their alloys as high temperature material candidates for automotive application and it is believed that in the near future ceramics will totally replace metals and their alloys as high temperature material candidates in the field of engineering and technology.
Journal of Thermodynamics. 12 (2009) 193-202
Nishiyama, Heat insulated turbo compound engine, SAE Technical Paper. 92 (1983)

An aim of the manufacturer is to simultaneously optimize all requirements of responses via the proper levels of process parameters.
An aim is to improve quality characteristics in the HTP by simultaneously optimizing hardness, stain yield and roundness.
Jouvard, Optimization of TA6V alloy surface laser texturing using an experimental design approach, Optics and Lasers in Engineering 46 (2008), 671-678
Fu, A practical approach to generating steepest ascent tool-paths for three-axis finish milling of compound NURBS surfaces, Computer-aided Design 39 (2007), 964-974
Luangpaiboon, Variable neighborhood simplex search methods for global optimization models, Journal of Computer Science 8 (2012), 613-620.

Dutkiewicz, Plastic deformation of CuAlMn shape-memory alloys, Journal of Materials Science. 29 (1994) 6249-6254
Kreytsberg, Abnormally high recovery strain in Ti-Ni-based shape memory alloys, Journal of Alloys and Compounds. 577 (2013) S255-S258
Inaekyan et al., Functional properties of nanocrystalline, submicrocrystalline and polygonized Ti-Ni alloys processed by cold rolling and post-deformation annealing, Journal of Alloys and Compounds. 509 (2011) 2066-2075
Prokoshkin et al., Characterization of amorphous and nanocrystalline Ti-Ni-based shape memory alloys, Journal of Alloys and Compounds. 473 (2009) 71-78
Buschow, Stability and electrical transport properties of amorphous Ti 1-xNix alloys, Journal of Physics F: Metal Physics. 13 (1983) 563-571

The conducted analysis was aimed at defining methodology for manufacturing prototype castings with the use of numerical simulation tools, especially the implementation of boundary conditions achieved as a result of solidification analysis and techniques of rapid prototyping.
Technology, distribution of tensile strength and porosity in a casting of a rocker arm The casting of a cover – the analysis of the casting properties in serial production and in the prototype casting The analysed casting of a cover is manufactured of AlSi9 alloy with the use of the high-pressure die casting technique.
The initial nuclei of solidifying metal do not have time to compound and the created structure is fine-grain.
The use of numerical calculations allows conducting the analysis of the construction together with the possibility of material and construction conversion, which aims at decreasing the mass of the construction and lowering the costs of its manufacturing. 3.
[2] Gustafssona E., Hofwingb M., Strömbergb N.: Residual stresses in a stress lattice - Experiments and finite element simulations, Journal of Materials Processing Technology 209, pp. 4320–4328, 2009