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Effects of Doping Si on the Preparation of Ternary Titanium Aluminum Carbide Powder by Pressureless Sintering Wang Ping Department of Chemistry, School of Science, Wuhan University of Technology, Wuhan 430070, China Wangping0904@whut.edu.cn Keywords: Ternary titanium aluminum carbide powder; doping Si; pressureless sintering.
Results showed that Ti2AlC and Ti3AlC2 which had obvious layered structure were synthesized by pressureless sintering of 3Ti/1.1Al/1.8C at 1300ºC-1500ºC.
Interestingly, the character of layered structure became unconspicuous at same temperature.
When temperature reached 1500℃, crystal grain were more than that of 1400℃ with unconspicuous layer structure.
Moreover, since the character of layered structure of 211 phase is presented more obvious than that of 312 phase, the character of layered structure of doping Si became unconspicuous at same temperature..

Alumina and zirconia-alumina composite has been micro-structured in air using femtosecond laser.
When stabilized with 3 mol% yttria, zirconia tetragonal structure can maintain its high temperatures and be metastable at room temperature.
Previous studies show that these surface characteristics depend on surface chemistry [5], surface energy [6] and surface topography [4].
In fact, when a laser shot hit the surface of a material it changes the local electronic structure even for fluences below the threshold for damage.
Figure 2 below shows such structures; it is clearly seen a harsh ablation in figure 2 a), with evidence of fusion and grains much smaller than the ones found in the original structure.

From the X-Ray Diffraction (XRD) data it is evident that both acid and alkali bleached celluloses have rich cellulose I structure.
The FTIR spectra were carried out to characterize the chemical structure by identifying the functional groups of the samples.
It was demonstrated in XRD and FTIR works that bleaching media could affect the structure of cellulose.
Idris, XRD and FTIR of Natural Cellulose Isolated from Acacia mangium, belian (Euxideroxilon zwagery) and Sawmill Sawdust, Asian chemistry letter, India: Anita Publication, (2010), (14):4 [3] G.
Schuster, Overview on Native Cellulose and Microcrystalline Cellulose I Structure by X-Ray Diffraction (WAXD): Comparison Between Measurement Techniques, Lenzinger Berichte 89, (2011), p.118-131

Janzéne Department of Physics, Chemistry and Biology, Linköping University, SE-58183 Linköping Sweden *also Norstel AB, Ramshällsvägen 15, SE-60234 Norrköping, Sweden a henke@ifm.liu.se, bahy@ifm.liu.se, c jawul@ifm.liu.se, dpeber@ifm.liu.se, e erj@ifm.liu.se Keywords: CVD Epitaxial layers, Aluminium, Photoluminescence Abstract.
Introduction We have grown and investigated Al-doped CVD layers; such layers can be important both as voltage-supporting layers in high-voltage bipolar power device structures and as contact layers.
Our LTPL investigations further show that the structure of the Al-BE structure differs for the Si- and C-face of 6H (see Fig. 3.a and b).
For the 4H polytype no difference of the Al-BE structure was observed for the two faces.
This suggests that the properties of Al-BE intensity is face dependent for the 4H polytype, even if this is not shown by the structure of the BE.

XRD studies indicated that all of BPT films consisted of single phase of a bismuth-layered structure with well-developed rod-like grains.
In the present work, we fabricated Pr2O3-doped Bi4Ti3O12 thin films with rf magnetron sputtering technique, and their structures and electrical properties were studied in details.
According to the results, it is possible to think that the Bi-layered structure is always maintained in BPT and rather insensitive to the amount of Pr.
Experimental results reveal that all of BPT films consist of single phase of a bismuth-layered structure and consist of well-developed rod-like grains with random orientation.
Chemistry and Phys. 2006, 98: 481-485

This heat treatment results in a maximum heterogeneity of the structure with nearly an equal amount of α and β phases.
The resulting structure is stabilized by annealing and the ductility and toughness of welds significantly increases.
Thermal treatment of the samples caused some changes in the structure of all parts of the joint (Fig. 3).
Polkin, Titanium alloys. composition, structure, properties, Reference Book., VILS-MATI, Moscow, 2009
Asgari, Microstructural studies and wear assessments of Ti/TiC surface composite coatings on commercial pure Ti produced by titanium cored wires and TIG process, Materials Chemistry and Physics. 137.3 (2013) 959-966

Key words: Coal tar refined soft pitch; Average molecular structure; polarizing microscope with heating stage; thermogravimetric analysis Abstract: The thermal behavior of coal tar refined soft pitch (CTRSP) was investigated by using polarizing microscope with heating stage and thermogravimetric analyzer.
The model of average molecular structure parameters is improved model of Brown—Ladner (B-L).
Conclusion The properties of the CTRSP are softening point 30 ℃, 6.03% TI, 0.08% QI, average molecular weight of 292 by GPC, average molecular structure five rings linear arrangement and cata-condensed structure.
Journal of Fuel Chemistry and Technology, 1981, 4:353-358,(in Chinese) [15] Changwei Lu, Tonggeng Xi.

Containing rich amount of repeated structure of Gly-Pro-Hyp is a typical characteristics of all gelatins and has been elucidated to stabilize the triple helix of collagen [6] and also directly affect the properties of gelatin, such as rigidity, gelling and melting temperature (Haug, 2004b; Te Nijenhuis, 1997).
Christopher, In: Food Hydrocolloids Structures, Properties and Functions,edtied by N., Etsushiro, D/ Katsuyoshi Publising, New York, (1993), in press
Food Chemistry.77(2002),81-84
Food Chemistry.70 (2000), 71-76

Effect of Bentonite and Zinc Borate (ZB) Addition on Recycled Polypropylene Composites against Tensile and Burning Rate Properties Neng Sri Suharty*1), Hanafi Ismail2), Fajar Rakhman Wibowo1), Desi Suci Handayani1), Maulidan Firdaus1) and Lupi Lathifah1) 1)Departement of Chemistry, Faculty of Mathematics & Natural Sciences, Sebelas Maret University, Jl.
Table 1: The Compounding of various composites rPP/Ben with and without ZB Ingredient (phr) Composites F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F13 F14 F15 F16 rPP 100 90 80 70 60 90 80 70 60 90 80 70 60 90 80 70 60 PP-AA - 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 natBen - 10 20 30 40 10 20 30 40 - - - - - - - - comBen - - - - - - - - - 10 20 30 40 10 20 30 40 ZB - - - - - 5 5 5 5 - - - - 5 5 5 5 The structure interaction analysis was performed by determining the crystalline peaks of composites using XRD.
Result and Discussion Structure Interaction Studies of Composites.
Flammability, Biodegradability dan Mechanical Properties of Bio-Composites Waste Polypropilene /Kenaf Fiber Containing Nano CaCO3 with Diammonium Phosphate, Procedia Chemistry, 4, (2012) 282-287

Compressive ductility Ductility represents energy-absorbing capability of materials or structures.
Peng: Steel fiber reinforced concrete structures, Press of China building industry, Beijing (1999)
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)