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Effects of Two-step DC Electrochemical Pretreatment of Fine Grinding WC-Co Tool Surface on Morphology and Quality of Diamond Coatings Xiang-hui Zhang1, 2,a, Ling Wang1, 2,b*, and Jian-pin Long1, 2,c 1College of Materials and Chemistry& Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China 2 Key Laboratory of Diamond Film, Chengdu University of Technology, Chengdu 610059, China azhxh@cdut.edu.cn, bwangling@cdut.edu.cn,clongjianping@cdut.cn *Corresponding author:(L.Wang) wangling@cdut.edu.cn,Tel./+8613330941108.
The sample for 7.5min, the diamond coatings was formed mainly by secondary nucleation and growth, resulted in the formation of a cauliflower-like or featureless morphology with a structure made up of nanocrystalline grains with a size less than 60 nm in average (Fig. 1e).
These results confirm that the structure of the diamond films gradually changed from MCD to NCD.
Above results of both SEM and Raman demonstrated that on the one hand, as electrolytic etching time increasing less than 7.5min, the increasing the amount of WC grain boundaries and micro-defects on the fine grinding WC substrates caused by the pretreatment enhance the diamond nucleation density, promote small grain sizes, resulting in the structure of the films change from MCD to NCD.
As electrolytic current is direct current 3A, electrolytic etching time increasing less than 7.5min, can enhance the diamond nucleation density, promote small grain sizes, resulting in the structure of the films gradual transition from microcrystalline cubic -octahedron to cauliflower type nanocluster.On the other hand, further increase the electrolytic etching time, will lead to several negative effects on the quality and nucleation of the coatings, which is not only retard the diamond nucleation, but also promote the formation of graphite.

They are extremely resistant to wetting, which makes them rebel to chemical characterization, synthetic chemical treatment and solution chemistry.
Zhi-Min Dang [3] has used trifl{TTP}-1278 uorophenyl to treat CNT such that minimum damages should be incorporated to the structure of the CNTs.
In an assembled form, an effort is made to establish a hierarchical approach in designing a complete cycle for purified, untangled and functionalized CNTs with minimum damage to their structure hence maintaining the aspect ratios.
Basic structure of CNTs and presence of amorphous phases were analyzed by using x-ray diffractometer (XRD) with CuKα radiation source.
Morphology and structure of CNTs was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM).

Jansen 1,e 1 Department of Periodontology and Biomaterials, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands 2 Laboratory for Inorganic Chemistry, Delft University of Technology, Delft, The Netherlands a s.leeuwenburgh@dent.umcn.nl, bj.wolke@dent.umcn.nl, cm.siebers@dent.umcn.nl, d j.schoonman@tnw.tudelft.nl, ej.jansen@dent.umcn.nl Keywords: Electrostatic Spray Deposition; Calcium phosphate coating; Apatite; Dissolution Porous coating; SBF; Subcutaneous Abstract.
Introduction The bioactivity of calcium phoshate (CaP) ceramics is determined by both chemical factors - such as the crystal and molecular structure of the material - and physical factors, such as surface roughness and porosity [1].
Coatings with a β-TCP structure degraded at an intermediate dissolution rate in between the rates for CA and CHA coatings.
The pore walls of CHA-coatings gradually transformed from a smooth towards an irregular and globular surface appearance, but this porous ring-structure was still observed after 12 weeks of implantation (Fig. 5b).
In contrast to XRDanalysis, traces of the partly degraded reticular structure of the β-TCP coatings were still detected by means of SEM after 12 weeks of implantation.

Effect of sintering temperature on microstructure and electrical properties of (Mn, Nb)-doped BZT-BCT ceramics Cheng Zhang1, a, Qibin Liu2, b and Xiaoqin Huang3, c 1College of materials and metallurgy, Guizhou University, Guiyang, China 2College of materials and metallurgy, Guizhou University, Guiyang, China; School of Chemistry and Materials of Kaili College, Kaili , China 3College of materials and metallurgy, Guizhou University, Guiyang, China azipperzinc@163.com, bqbliu2@263.net, chuangxiaoqin0704@126.com Keywords: lead-free piezoelectric ceramic; dielectric property; Nb2O5-doped; sintering temperature Abstract.
In this work, the effect of sintering temperature on crystal structure and dielectric properties of (Mn, Nb)-doped 0.5Ba(Zr0.2Ti0.8)O3- 0.5(Ba0.7Ca0.3)TiO3 ceramics were investigated.
Phase structure of the prepared ceramics samples were characterized by using XRD (PANalytical Xpert).
It can be seen from the Fig. 1(a) that all samples show pure perovskite structure and no secondary phase is found in BZT-BCT-Mn-Nb ceramic samples sintered at different temperatures.
It can be seen from Figure 2, ceramic sample has the least porosity and the densest structure at 1380oC, which contribute to the improvement of dielectric constant.

Introduction As the lightest metallic structure materials, magnesium alloys offer many advantageous properties including low density (< 2 g /cm3), high strength: weight ratio, high specific stiffness, superior damping and magnetic shielding capacities [1-2].
Turkdogan: Physical Chemistry of High Temperature Technology, 2 th ed., Academic Press, New York, 1980, pp. 160-165

Kinetic Model of Atractylodes Processing Fang Wang1, a, Dengwu Wang 2, b 1Department of Chemistry and chemical engineering, Shaanxi Institute of Education, Xi’an, Shaanxi, China, 710061; 2Basic department, Xijing University, Xi’an, Shaanxi, China, 710123; aemail:wdf_wang@126.com, bemail: farmouse403@mail.nwpu.edu.cn, Keywords：Atractylodes macrocephala Koidz；Atractylone；fry；activation energy Abstract： The Atractylone, one of the volatile constituents, was the main active components applied in many fields.
The structure new component needs to be further identified, and the mass spectrum is given in Fig. 2.

Hydrogen Permeability of NiO-doped Alumina with Nickel Composites Membrane Boyoung Shona, Miewon Jungb School of Biological Sciences and Chemistry / Institute of Basic science, Sungshin Women's University, Seoul, 142-732, Korea abyson@sungshin.ac.kr, bmwjung@sungshin.ac.kr Keywords: NiO-doped Al2O3, Sol-gel method, P123, Hydrogen permeability Abstract NiO-doped Al2O3 was synthesized with 20 wt% of nickel nitrate using the sol-gel process.
The structure change and phase transformation of the 20 wt% NiO-doped Al2O3 powder with P123 was characterized by X-ray diffraction measurements (XRD, Bruker D8 Focus, 40 kV, 40 mA, 0.2°/min, 10-80°) using CuKα radiation (λ = 1.5406Å) and field-emission scanning electron microscopy (FE-SEM, JEOL-JMS 7500F).

Characteristics of Lysozyme Adsorption on Magnetic Fe3O4/chitosan Nanoparticles at Fixed pH Yanlan Lin, Ren Wang, *Wei Ma, Zihong Cheng Department of Chemistry,Dalian University of Technology ,Dalian, China e-mail: mawei@dlut.edu.cn Keywords:Lysozyme; Magnetic Fe3O4/chitosan; Adsorption; Fixed pH Abstract.Magnetic Fe3O4/chitosan nanoparticles were synthesized for lysozyme separation from solution.
Sips, On the structure of a catalyst surface, J.

It favors environment protection and energy preservation, and accords with the orientation of green chemistry.
Grade, Beijing Modern Eastern Fine Chemicals Co., Ltd; same structure and different molecular weight of stabilizers were prepared in the laboratory; other reagents were A.R.

Introduction A landmark paper regarding Carbon nanotubes (CNTs) by Iijima [1] has attracted worldwide attention due to their potential use in the fields of chemistry, physics, nano-engineering, electrical engineering, materials science, reinforced composite structures and construction engineering.