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Microstructure control and structure analysis in the semi-solid state of different feedstock materials for the bearing steel 100Cr6 W.
Uggowitzer3,d 1 Department of Ferrous Metallurgy, RWTH Aachen University, 52072 Aachen, Germany 2 Materials Chemistry, RWTH Aachen University, 52072 Aachen, Germany 3 Department of Materials, Swiss Federal Institute of Technology, ETH Zürich, Switzerland a puettgen@iehk.rwth-aachen.de, bbleck@iehk.rwth-aachen.de, challstedt@mch.rwth-aachen.de d peter.uggowitzer@mat.ethz.ch Keywords: Steel, Semi-Solid Metalforming, Thixoforming, 100Cr6, TiN.
Higher amounts, however, would lead to the formation of TiN in the liquid or semi-solid state, such that the precipitations would become relatively coarse and the control of a fine-grained structure become inefficient.

Preparation of Si3N4-Al2O3 Functional Gradient Joining Material Using Transient β-Sialon Interlayer Linjiang Wang1, 2a, Xiangli Xie3,Ye Zhang 2 and Yingguang Chen2 1 Key Laboratory of New Processing and Technology for Nonferrous Metals and Materials, Guilin 541004, China 2 School of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China 3 School of Chemistry and Biology Engineering, Guilin University of Technology, Guilin 541004, China a wlj@glite.edu.cn Keywords: Silicon nitride; Alumina; Sialon; FGMs; Joining Material Abstract.
The structure and properties of the materials were analyzed by the means of scan electron microscopy(SEM), X-ray diffraction(XRD) and micro-sclerometer.
The microhardness is gradient changing with the change of micro-structure.
There is almost no changes of hardness and structure of FGM under thermal shock for one times at 1300 o C.

Modifications to existing nano-synthesis protocols to formulate a nontoxic Green Chemistry Route are also presented.
These meta-stable states can also act as trap centers since their electronic structures differ from that of normal dopant ions.
Defect related traps are easy to be produced in host materials that have complicated crystal structures.
Such phosphors may open up new areas in phosphor chemistry.
Haranath, Harish Chander, Sukhvir Singh, Green chemistry-mediated synthesis of nanostructures of afterglow phosphor, Appl.

The novel visible-light-driven Bi2WO6 photocatalyst with orthorhombic structures was synthesized via a reverse microemulsion method.
For the samples synthesized at 130o C was not crystalled very well, it contain some amorphous structures.
To determine the elemental composition and chemical state of the as-prepared Bi2WO6 structures, XPS was carried out, and the results are shown in Figure.3 Characteristic binding energy (BE) value of 158.9 eV and 164.1 eV for Bi 4f7/2 (Fig. 3a) reveals a trivalent oxidation state for bismuth.
The sample was not crystalled very well in low temperature (130 o C), it had some amorphous structure and deficiency.
Shen, X.Q Wang, et al: Materials Chemistry and Physics.

Preparation and Electromagnetic Properties of Urchinlike Ni Haiping Qi1,2,a, Hailin Cao2,3,b and Yudong huang3,c 1 Chemistry and Engineering Post-doctorate Mobile station, Harbin Institute of Technology, Harbin 150001, China 2 Shenzhen Key Laboratory of Composite Materials, Shenzhen Academy of Aerospace Technology, Shenzhen 518057, China 3 Department of Polymer Science and Engineering, Harbin Institute of Technology, Harbin 150001, China ahpqi@ustc.edu, bcaohl@hit.edu.cn, cHuangyd@hit.edu.cn Keywords: Ni; uchinlike; morphology; Electromagnetic Properties Abstract.
The results indicate that the microwave absorbing properties are improved by the urchin structure.
It is interestingly found that there is morphology-dependent electromagnetic parameter of these nickel structures.
Chen, Microwave Absorbing Properties of Radar Absorbing Structure Composites Filling with Carbon Nanotubes, Adv.
Li, Absorbing Properties of Composite Material Plates of Multi-Layer Absorbing Structure, Adv.

Quartz, silicate and olivine are mostly associated with magnetite in native as inclusions, and have micro-fine disseminated structure.
Table 1 Main chemical composition in magnetite ore Element SiO2 MgO TFe Al2O3 CaO TiO2 Content/% 51.01 7.38 10.91 12.49 11.03 0.51 Element Na2O Cr2O3 MnO K2O SO3 P2O5 Content/% 1.35 0.01 0.17 1.27 0.07 0.21 For ore characterization, optical mineralogy, using the prepared polished and thin sections, was performed to define the main and the trace minerals and their micro-fine disseminated structure.
The stockwork structure is very small; the average size of stockwork is 0.034mm, such a structure makes it very difficult to dissociate the magnetite from gangue.
Surface Chemistry of Froth Flotation: Reagents and mechanisms[M].

The colored glass will be identified and shown that the insertion of transition metals (iron, manganese, and copper) into the crystal structure of silica causes Kaew Angwa to be colored.
It was used with wood and stucco and mostly at the pediment, gable shaped board, ma tang mai-main structure, the top of the pediment’s poles, hexagonal posts at the front, and the main posts, Kaew Angwa was also widely used in other provinces in the northern area.
Sukon Phanichphant submitted to Department of Chemistry, Faculty of Science, Chiang Mai University, 1992
[15] nzic.org.nz/ChemProcesses/metals/8F.pdf/Silver Mirroring - New Zealand Institute of Chemistry

Effect of Size of Cellulose Particle as Filler in the PVC Biocomposites on Their Thermal and Mechanical Properties Muhammad Ghozali1 and Agus Haryono1,a 1Polymer Chemistry Group, Research Center for Chemistry, Indonesian Institute of Sciences (LIPI), Kawasan Puspiptek Serpong, Tangerang 15314 Indonesia aagus.haryono@lipi.go.id Keywords: PVC, biocomposite, cellulose, nanoparticle Abstract.
The rheological and mechanical properties of PVC and cellulose composites were investigated as a function of surface structure and filler volume fraction.
The surface morphology structure of polymer composite was important characteristic because it determined many properties of polymer composite, such as thermal stability and mechanical properties.

The Properties of OMMT-PAN-Binary of Fatty Acids Blends as Phase Change Materials Jing Guo1,a, Hengxue Xiang1,b, Chengnv Hu 1,c 1College of Chemistry & Material, Dalian Polytechnic University, Dalian, 116034, P.R.
Using Scanning Electron Microscopy (SEM), Differential Scanning Calorimetry (DSC), Thermogravimetric analysis (TG) study the structure and properties of PCM, the optimized preparation techniques of PCM obtained by orthogonal tests.
SEM results showed that the PCM was homogeneous structure, binary of fatty acid dispersed in the continuous phase PAN; TGA results indicated that the degradation of the phase change material can be divided into three steps; DSC results showed that the crystallization enthalpy of PCM reached 143.27 J/g, the phase change temperature was around 23˚C, and the DSC thermal circulation showed good thermal stability of the PCM; cooling curve showed that the PCM had good heat insulation properties, holding time reached 800s, and after repeated thermal circulation, heat insulation properties remained the same.
Table 1 Orthogonal design of PCM L9(34) m(PAN-OMMT)/m(SA-LA) m(PAN)/m(OMMT) Time [min] Temperature [℃] 1 4/6 3/1 10 70 2 3/7 4/1 20 80 3 2/8 5/1 30 90 1.2 Performance characterization Surface morphology: The section morphological structure was observed by SEM (JSM-6460LV, JEOL LTD).
Fig. 1 shows that PCM is homogeneous continuous structure, SA/ LA uniformly distributed in the continuous skeleton PAN, and did not find the existence of free OMMT.

Niwa Department of Applied Chemistry, Kanagawa Institute of Technology 1030 Shimoogino, Atsugi, Kanagawa 243-0292, JAPAN 1.
XRD and TEM analysis139 revealed that MCNT material possess highly crystalline 3D structure with continuous network of mesoporous channels as well as structure corresponds to TiO2.
"The solar photocatalytic decontamination of water", Chemistry and Industry, (1994b) 714-717. 19.
Berichte der Bunsen-Gesellschaft - Physical Chemistry, 101 (1997) 1562-1572. 68.
Berichte der Bunsen-Gesellschaft - Physical Chemistry, 91 (1987) 88-94. 73.