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The structure of the oxide layer of T91 high temperature superheater tube The thickness of the oxide layer of T91 tube is thicker than some other tubes which are made up of other materials.
The impact of the structure and the protective properties by the water conditions With the supercritical running of boiler, the requirement of the tube materials become higher.
The widely used tube materials are T91 and TP347 at present stage.
So if the design materials are allowed under the normal conditions, the well protective oxide layer will be formed on it with good anticorrosion performance.
Journal of Materials Protection. 2003.6 (36): 9-11.

Synthesis of High Injection Molding Performance and Low Acetaldehyde Poly(Ethylene Terephthalate) by Eco-Friendly and Highly Active Titanium Catalyst Zhenyu Guana, Yumei Zhangb*, Huaping Wangc College of Materials Science and Engineering, Donghua University, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai 201620, China) aguanzhy.sshy@sinopec.com, bzhangym@dhu.edu.cn, cwanghp@dhu.edu.cn Keywords: Titanium bottle chip, acetaldehyde content, crystallization properties, injection molding Abstract.
Introduction Polyethylene terephthalate (hereinafter referred to as polyester) is the largest variety of synthetic fiber raw materials, which is widely used in the production of fibers, films, bottles and engineering plastics.
In the research of titanium catalyst, titanium glycolates have been normally recognized as favorable and versatile solid precursor for preparing TiO2 materials [17], but they are rarely utilized to fabricate titanate materials.
Experimental Materials and Instruments.
Acs Sustainable Chemistry & Engineering, 2017, 5(3):2181-2195

Effects of Initial pH on Bio-hydrogen Production from Alkaline Pretreated Municipal Sludge Changqing LIU1,a, Yufang YU2,b, Hong LIN2,C, and Youcai ZHAO3,d 1School of Geographical Science, Fujian Normal University, Fuzhou 350007, China 2Institute of Environment Protection Science, Fujian Normal University, Fuzhou 350007, China 3The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China amylcq@126.com(corresponding author), b1220624099@qq.com, c953926992@qq.com, dzhaoyoucai@tongji.edu.cn Keywords: Municipal sludge; Alkaline pretreatment; Bio-hydrogen production; Anaerobic fermentation; Initial pH Abstract.
The municipal sludge, which mainly composed of polysaccharides, proteins as well as abundant groups of microorganisms, has been proved to be a promising biological material for hydrogen production by anaerobic fermentation.
For example, the optimal initial pH for fermentative hydrogen production reported by Khanal[7] et al. was 4.5 for sucrose and starch using compost material obtained from Iowa State University composting pile as a seed source.
Materials and methods Sludge.
Liu, Influential factors of fermentative hydrogen production from thermally treated sewage sludge, The Chinese Journal of Process Engineering, 9(2009) 47-52.

Tegus1,2,e 1College of Physics and Electronic Information, Inner Mongolia Normal University, Hohhot 010022, China 2Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, Hohhot 010022, China 3Inner Mongolia Engineering Research Center for Rare Earth Functional and New Energy Storage Materials, Hohhot 010022, China aargl0622@163.com, b*naren0501@163.com, c2550082678@qq.com, dmengrui000903@163.com, etegusph@imnu.edu.cn Keywords: octanoyl amino acid ligand; gadolinium complex; absorption Abstract.
Amino acid lanthanide complexes are a promising class of environmentally friendly and non-toxic optical organic materials that find extensive applications in biomedicine, molecular probes, and optical devices.
The strong optical absorption of the gadolinium complexes suggests potential applications in the field of light-absorbing matrix materials.
Highly Stretchable and Fast Self-Healing Luminescent Materials [J].

The key part of design and manufacture of ram-shape die is expanding-diameter forming sector.
References [1] Duan Wensen et al: 1st Symposia Proceedings of Chinese pipeline academic, Hefei: 1997: 79-83 [2] Chen Jun, Yang Haiying and Duan Wensen: International Conference on Advances in Materials Science and Manufacturing Technology，992-996 [3] Huang Xia, Zeng Yuansong, Zhang Xinhua et al.
The forming technology of titanium alloy elbow, Oil tuber goods engineering, 2011，Vol.17(6):1-6 [5] Chen Jun, Duan Wensen and Yang Haiying. 2008，Vol.37(Suppl.4):555-560 [6] Duan Wensen，Chen Jun and Yang Haiying, Oil tuber goods engineering, 2008, 14(1),1～8 [7] Li Kui.
Metal forming machinery, 1997, (4):10-13 [9] Mechanics and engineering， Lu Xiaoyang，Xu Bingye, Cen Zhangzhi, Shi Baojun.
Mechanics and engineering, 1998, Vol20(6):15-17 [10] Lu Xiaoyang，Xu Bingye, Li Kui. 1994, (7):11-14,25 [11] Chen Jun, Duan Wensen and Yang Haiying, Proceedings of the 12th world conference on titanium, 1114-1118 [12] Duan Wensen.

Scardi1,c 1 Department of Materials Engineering and Industrial Technologies, University of Trento, via Mesiano 77, 38100 Trento, Italy 2 Paul Scherrer Institute, 5232 Villigen PSI, Switzerland a Matteo.Leoni@unitn.it, bjorge.martinezgarcia@psi.ch, cPaolo.Scardi@unitn.it Keywords: X-ray diffraction; powder diffraction; line profile analysis; dislocations; whole powder pattern modeling.
Whole Powder Pattern Modeling (WPPM) is especially useful to study line defects in powder and polycrystalline materials.
Until recently DCFs were only known for a few materials, all belonging to cubic or to hexagonal systems [11-13].
E., 1974, X-ray Diffraction Procedures for Polycrystalline and Amorphous Materials, 2nd ed.
(Editors), 2004, "Diffraction Analysis of the Microstructure of Materials", Springer Series in Materials Science, Vol. 68.

Guangzhou China ,510430 Goahead3@163.com Author Introduction: Zeyu Chen （1969-）,male ,born in Tianmen Hubei province,Senior Engineer,Associate Professor, Master.
Key words: Tool wear; On-line monitor; ARM; monitor current Abstract: In order to on-line monitor tool wear, an on-line monitor tool wear system was built.
TNL-500 CNC lathe (made in Korea) is selected as the test tool, 40Cr alloy steel whose chemical composition shown in Table 1 is used as try cutting specimen materials, because Chromium steel has good mechanical properties and impact toughness, grade YT14, model 31305A carbide turning tools is fit to cut and no cutting fluid is used to cool.

Numerical Simulation of Crude Pipeline Using Moisture-Heat Coupled Thermal Equation Bo Xu1, a, XiangDong Xue1,a, Zhiqiang Yao2,a, Long Wang1,a, Deji Wang3,b, Feng Zhu1,a and Lianfeng Huo1,a 1PetroChina Pipeline R and D Center, Jinguang Road 51, Langfang City, P.R.C 2 Technology Service Center of PetroChina Pipeline Company, Langfang City, P.R.C 3 Training Centre of National Tobacco Monopoly Bureau, Zhengzhou City, P.R.C a {kjxubo; xdxue; zqyao; kjwanglong; zhufeng; lfhuo} @petrochina.com.cn bwangdeji@yahoo.cn Key words: crude pipeline; non-linear problems; numerical simulation; moisture-heat coupled equation; non-coupled equation; Abstract.
This gives the engineer or the technician a straightforward idea that the current flow rate has about 64% safety reservation.
De Varies: Moisture movement in porous materials under temperature gradients, Transactions, American Geophysical Union, 1957, 38(2) p. 222 [10] B.

Research on Early Warning System for Plastic Shrinkage Cracking of Cement Mortar Based on Constitutive Equations Yiping Ma1,a*, Jie Fu1,b, Han Zhang1,c, Zhenghang Ma1,d, Shaotong Yu1,e, Lu You2,f, Le Zhang3,g, Guoyou Li4,h, Qiongqiong Wang1,i, Xiaojie Yang1,j* 1Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai 201804, China 2Nantong Zhongnan Commercial Development Co., Ltd., Shanghai 200051, China 3Shanghai Greenchem Trading Co., Ltd., Shanghai 200003, China 4Technical Center, China State Construction Engineering Co., Ltd., Beijing 101300, China a*ypma1239@sina.com, bjfu1995@126.com, c1220948769@qq.com, d2502042358@qq.com, e873898647@qq.com, fyoulu1102@163.com, gzhle_2501@163.com, hliguoyou1986@126.com, i2631795847@qq.com, j*01074@tongji.edu.cn Keywords: cement mortar, plastic shrinkage cracking, constitutive equation, early warning system, polyvinyl alcohol fiber.
Sadegh [2] studied the mechanism of plastic shrinkage of cement-based materials.
However, there are few studies and data reports on the prediction of plastic shrinkage cracking of cement-based materials.
Lura, A poromechanics model for plastic shrinkage of fresh cementitious materials, Cem.
Wang, Research on the judge criterion of plastic shrinkage cracking for cement-based materials, J.

This problem is also important for the civil engineering complex.
One of the main building materials for construction is concrete.
This material will remain one of the main structural materials for the near future.
Materials and Research Methods 4. 1.
Kotsiurubenko // technical university of moldova and moldavian engineering association, journal TUM «MERIDIAN IINGIINERESC». – 2017. – № 2