Search results

Storozhenko1,c 1State Research Institute for Chemistry and Technology of Organoelement Compounds, 105118, Moscow, Russia 2Moscow Aviation Institute (National Research University), 125993 Moscow, Russia agalina7479@mail.ru, bvarfolom2a@yandex.ru, cinfo@eos.su Keywords: titanium alloys, alpha case, yttrium aluminum binder, corundum ceramic mold, yttrium aluminum melting crucible, surface quality Abstract.
Introduction Titanium and its alloys are widely used for the manufacture of products for aircraft and rocket-and-space engineering, in shipbuilding and machine building, in the power industry and chemistry, as well as in medicine, where biological inertness plays a particularly important role [1-3].
The surface layer of the titanium product obtained in the mold of Al2O3–Y3Al5O12∙α-Al2O3 composition has a defect-free structure.
Microanalysis shows that the surface of the titanium casting has a defective structure.
Materials Chemistry and Physics. 155 (2015) 205–210

Structural formula is Mg2Si2O5(OH)4, mainly consisting of SiO2 and magnesium and reveals monoclinic or orthorhombic structure [7].
It was confirmed that chrysotile samples had unique property of crystal structure and fiber morphology.
Analytical chemistry (1988) 60.6: 395A-395A
Analytical Chemistry (1972) 44.11: 1872-1873
Analytical and bioanalytical chemistry (2003) 376.5: 653-658

Instrumentation The component with strongest adsorption on the surface of the resin catalysts was determined based on the structure analysis using FTIR.
The C=O and –C=O-C- were suggested to originate from the lactic acid structure while C-O and C-H bonds were suggested to have occurred from the ethanol group and water (O-H).
Chemistry and Chemical Engineering (ICCCE), 2010 International Conference on: IEEE; 2010. p. 1-5
Industrial & Engineering Chemistry Research. 2012; 51(44):14367-14375
Industrial & Engineering Chemistry Research. 2014; 53(6):2167-2174

Dyes are ionic, aromatic organic compounds with structures including aryl rings which have delocalized electron systems.
Such complex aromatic molecular structures make dyes more stable and more difficult to bio degrade.
References [1] M.P.Stevens, “Polymer Chemistry”, New York, (1999)
[2] F.Flory,"Priniciples of Polymer Chemistry", New York, (1953)
[8] P.Y.Brwee; "Organic chemistry":2nd Ed; prentice Hall New Jeres (1998)

Self-lubricating SiC/PTFE composite coating formation on surface of aluminium alloy Minghua CHEN1,a, Kaichang KAO 1,b, Mingwu TU2,c ,Dongna ZHANG1,d 1Applied Chemistry Department of Northwestern Polytechnical University, XI′an, Shanxi, 710072, China 2The First Aeronautical Institute of the Air Force , Xinyang, Henan,464000 , China acredit6@163.com, bkoukc@nwpu.edu.cn, ctumw@163.com, dzhangdn@163.com Keywords: Anodization; Self-lubricating; Ultrasonic impregnation; PTFE; n-SiC Abstract: Anodized composite films containing n-SiC and PTFE particles are prepared on 2024 Al alloy by anodization in phosphoric acid-base electrolyte and ultrasonic impregnation and subsequent heat treatment.
Anodization is the most common method to overcome these shortcomings, and have been studied extensively .The anodic oxide film formed by anodization is generally considered to have a porous structure and has the merits of better wear resistance and excellent corrosion resistance .
Depositing and/or synthesizing anti-friction materials and lubricant in situ within the porous structure of the anodized aluminum film by physical, chemical or galvano-chemistry means to get certain self-lubricating property is one of the focus in the aluminum surface research area during the past 10 years.
Materials Chemistry and Physics, 2003,82 (2) :370–374

Preparation of Terephthalic acid (TPA) and Dioctyl terephthalate (DOTP) by Anthracite's Alkali Oxygen Oxidation Kun Du, Minglei Lian, Zhifang Fan and Yu Li Department of Chemistry and Chemical Engineering, Liu Pan Shui Normal University, Liupanshui, 553004, P.
A number of characterization techniques are being successfully used to determine the structure of TPA and DOTP.
The results indicated that the structure of TPA and DOTP are consistent with the standard.
Zhao: Journal of Fuel Chemistry and Technology Vol. 36(2008), p. 139 [8] Q.M.
Guo: Journal of Fuel Chemistry and Technology Vol. 31(2003), p. 496

China 201804 2Huntsman Chemistry R&D Center (Shanghai) Co., Ltd., 455 Wen Jing Rd.
The study also indicates some differences between water emulsifiable PU primer and two-component PU primer in waterproofing and breathable properties, which are related to the curing chemistry and film forming properties.
In general, deleterious chemical substances carried by water penetrate into concrete structure and deteriorate the hydrated cement paste and even the steel bars.
The difference is attributed to the curing chemistry, film forming properties and actual film thickness applied.
One-component water emulsifiable PU primers are more emphasis on the impregnation of coating into concrete structure and the formation of a breathable coating layer.

Density functional is used to study electron structure in a system by quantum mechanics.
Table 1 input parameters of molecular simulation Potential function Lennard-Jones potential Algorithm of interaction force of two atoms Velocity-Verlet algorithm Algorithm of electron structure GGA-BP Electric property 0 Dielectric constant of water 78.5 Pressure [Mpa] 0.1 temperature Room temperature Potential energy barrier according to two-electron reaction mechanism.
Journal of Physical Chemistry C, Vol. 126(6) (2008), p. 1975
Journal of Physical Chemistry B, Vol. 111(23) (2007), p. 6357
Journal of Physical Chemistry B, Vol. 112(18) (2008), p. 5602

Synthesis of bicyclic furo[2,3-d]pyrimidine Deoxynucleosides Conjugated with N-Diisopropylphosphoryl Amino Acids Ruchun Yang1,a, Hui Zhu2,b, Xuanye Jin3,c, Qiang Xiao*1,d, and Yong Ju*3,e 1Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, P.
China 3Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, P.
Or else the furo[2,3-d]pyrimidines structure will be opened during the deprotection.
Their structures were confirmed by various spectroscopies.

Ca3Sc2Si3O12:1%Ce3+, x%Ba2+ green phosphors for white light-emitting diodes Yibo Chen1,a, Wei Cai1,b , Yongqiao Liu2,c, Menglian Gong2,d 1 School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; 2 State Key Laboratory of Optoelectronic Materials and Technologies, Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China; achenyibo@gzhu.edu.cn, bcaiwei@gzhu.edu.cn, cliuyongqiao@sysu2.edu.cn, dcesgml@sysu.edu.cn Keywords: LED; phosphor; Ca3Sc2Si3O12 Abstract.
The powders synthesized are in pure phase and the doping of Ba2+ do not change the crystal structure of CSSO.
Honma: X-Ray Absorption Fine Structure-XAFS13.