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Titov, Destructive Materials Thermal properties determination with application for spacecraft structures testing.
Sipyagina, New composite materials on the basis of ceramic high porous heatprotective materials and aerogels, The VIII conference of young scientists on general andinorganic chemistry, Moscow April. 10–13 (2018) 80
[17] Ying Lia, Lu Zhanga, Rujie Hea, Yongbin Mac, Keqiang Zhang, Xuejian Baia, Baosheng Xua, Yanfei Chena, Integrated thermal protection system based on C/SiC composite corrugated core sandwich plane structure, Aerospace Science and Technology.
A multi-layer integrated thermal protection system with C/SiC composite and Ti alloy lattice sandwich, Composite Structures.

. % at RT [1, 2], the TiHx hydride in fcc structure is formed [1, 3 - 5].
The formation of the tetragonal structure of TiH2 hydride has especially been reported [5].
By exposing α-Ti to electrolytes, the formation of a continuous hydride layer [2], the hydride precipitates or the hydrogen dissolution in the metal [7] may occur depending on the solution chemistry and pH, the applied potential, used temperature and time.
Results show a typical martensitic structure (60°-oriented edges) inside old b grains with some precipitates located at triple junction of the grain boundaries.

Inoue 3 1Department of Materials Science & Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan 2 Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan 3 Tohoku University, Sendai, Miyagi 980-8577, Japan a yamasaki@eng.u-hyogo.ac.jp , b yy@imr.tohoku.ac.jp Keywords: Zr55Cu30Al10Ni5, bulk metallic glass, supercooled liquid, viscosity, pre-annealing Abstract.
Pre-annealing effects on viscosity of supercooled liquids Table 1 shows the structure detected by the X-ray diffraction, density, Tg, Tx and ∆Tx=(Tx-Tg) of as-cast and pre-annealed Zr55Cu30Al10Ni5 BMGs at 400 °C for 30, 60 and 120 min.
Table 1 Structure, Density, Tg, Tx and ∆Tx=(Tx-Tg) of Zr55Cu30Al10Ni5 BMGs.
Samples Structure by X-ray-diffraction Density (g/cm3) Tg (°C) Tx (°C) ∆Tx=(Tx-Tg) (°C) As-cast Glassy phase 6.726 425 538 113 400°C-30 min Glassy phase 6.731 424 535 111 60 min Grassy phase 6.741 424 532 108 120 min Grassy phase 6.746 424 528 104 (DSC, Heating rate: 400 °C/min) Figure 3 shows the viscosity (η) of the supercooled liquids of as-cast and pre-annealed Zr55Cu30Al10Ni5 BMGs at 400°C for 120 min as a function of temperature under the high-speed heating rate of 400 °C/min under a applied load of 0.049 N on the cylindrical indentation probe with a diameter of 1.0 mm.

Results and discussion Structure of bamboo fiber.
Fig.3 The portrait morphology of natural bamboo fiber (SEM) Fig.4 The transverse structure of natural bamboo fiber (SEM) Fig.3 and Fig.4 shows that bamboo fiber were the bundle fibers contains many fibrils.
The cross-section of fibrils is irregular oval or waist-circular or polygonal with inside cavity, gap could be seened between single fiber. from the structure, bamboo fiber maintain the original morphology and cracking method did not damage to the fibers structural.
Vol.29(2007), p.63 (In Chinese) [5] Zhan Huaiyu: Chemistry and Physics of Fiber. chapter,2 Beijing :Science Press, (2005).

Study on Photoelectrochemical performance of ZnO Nanotube /CdSeQuantum Dot-sensitized Solar Cell Ping-fang Taoa, Jun Heb, Chunjie Liangc, HAN Jian-pengd, QIN Li-qine Qi Pangf* College of chemistry and material, Yulin Normal University, Yulin, Guangxi, 537000, China a email: tpf005@126.com, bemail:hejun6692@163.com,cemail:liangchunjie012@163.com, demail: hanpengcom@yahoo.com.cn, e email: qinliqin8888@163.com, f*email: pqigx@163.com Keywords: ZnO; Quantum Dot-sensitized Solar Cell; CdSe; Photoelectrochemical property Abstract: ZnO nanotubes (NTs) were successfully fabricated with a hydrothermal method at low temperature.
In particular, ZnO and TiO2 NWs or NTs have attracted much attention due to their well-developed synthetic methods and excellent electrical properties arising from their highly crystalline structure[3].
From figure 1, we can see the intensity of diffraction peak (002) of the production is extreme higher then (001) and (101), and a hexagonal wurtzite structure.
The photoelectric properties results shows that the photoelectric conversion efficiency of ZnO nanotube /CdSe quantum dot sensitized electrode is 0.95%, These indicate that the ZnO nanotube arrays produced by hydrothermal method has especial hollow tube structure and direct contacts to the substrate, so it could construct the “high speed channel” that electron can transport from p-n junction surface to substrate, and could improve the performance of battery.

Control of Nanoscale Morphology of Oxide Crystals Using Aqueous Solution Systems Hiroaki Imai, Hirotoshi Ohgi, Yoko Takezawa, and Junko Yahiro Department of Applied Chemistry, Faculty of Science and Technology, Keio University 3-14-1 Hiyoshi, Hohoku, Yokohama 223-8522, Japan Keywords: Zinc oxide, Tin dioxide, Titanium dioxide, Crystal growth, Nanosheet, Nanorod ABSTRACT We successfully controlled nanoscale morphology of ZnO, SnO2 and TiO2 grown in aqueous solution systems.
Addition of urea influenced the crystal structure and the morphology of the crystals grown in the solution.
The observation using TEM clarified that the nanosheets consisted of a mosaic of platy nanocrystals having a wurtzite structure.
The nanosheets of ca. 10 nm in thickness had a lamellar structure consisting of a TiO6 framework.

Monirul Islam1,g, Whan Gi Kim1,a* 1 Department of Applied Chemistry, Konkuk University, 322 Danwol, Chungju, 380-701, Korea aawlad1975@yahoo.com, bh3boy@hanmail.net, cs0673231@konkuk.ac.kr, dloveknotsh@hanmail.net, ejhl0802@nate.com, ffigfight@hanmail.net, gmonir_acct@yahoo.com, a*wgkim@kku.ac.kr Keywords: SPDPEKS, fuel cell, proton exchange membrane, BFBDPB, sulfolane, sulfonation, ion exchange capacity, water uptake Abstract: Sulfonated poly(diphenyl ether ketone sulfone)s, SPDPEKSs were successfully synthesized for proton exchange membranes (PEMs).
The chemical structure of diphenyl ketone monomer, BFBDPB, was identified by 1H NMR shown in Fig.1.
The structures of the PDPEKSs were confirmed by 1H NMR.
The structures of the SPDPEKS were confirmed by 1H NMR and IR spectroscopy.

Chemistry, Via Cotonificio 108, I-33100 Udine Keywords: nanostructured copper alloys; hot extrusion; thermal stability.
However, softening is seen when this structure is subjected to heat treatments above 400ºC.
However, the deformation process combined with the high temperature needed to extrude at moderate pressures promotes rapid coarsening of the grain structure.
However, it is clear that the coarsening of the structure is accelerated by hot deformation process.

Nowadays advanced ceramics are widely used in cutting tools, dies for drawing or extrusion, seal rings, valve seats, bearing parts, and a variety of high temperature engine parts, etc.[4-6] However, the use of single-phase ceramics, even when fully densified, in high temperature structure or wear application is limited by the variability of their mechanical strength and their poor fracture toughness.
This strength is related with the mechanical properties of materials such as fine grain and boundary chemistry.
Kilduff, Engineering Materials Technology - Structures, Processing, Properties & Selection (3 rd ed.), Prentice-Hall, Inc., (1997)
R., Structure Ceramics.

Influence of Nanoclay Additive on Mechanical Properties of Bio-Based Polyurethane Nanocomposites K.Ivakina1, E.Skadins1, A.Kiyanitsa1, S.Gaidukov1a, V.Tupureina1, U.Cabulis2b, R.D.Maksimov3 11Institute of Polymer Materials, Riga Technical University, Riga, Latvia 2Latvian State Institute of Wood Chemistry, Riga, Latvia 3Institute of Polymer Mechanics, University of Latvia, Riga, Latvia asergejs@ktf.rtu.lv (corresponding author) bcabulis@edi.lv Keywords: polyurethane, nanoclay, nanocomposite, mechanical properties.
Aggregates, in comparison to the elementary nanoparticles, do not interact strongly with the polymer matrix, but form the defective structure of the composite, that can drop mechanical properties of material [6].
The organic modifiers’ chemical structures are shown in Fig.1.
The obtained fact of the increase of the tensile properties and microhardness is related to the effect of essential interaction between the polymer matrix and nanoparticles at the interface and the modified structure of polymer matrix in the interphase owing to the decrease of mobility of the macromolecule chains contacting the surface of particles.