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Duan 1, c 1 Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian,116024, PR China 2 School of Mechanical Engineering and Automation, North University of China, Taiyuan, 030051, PR China a pangjunzhong@163.com, b mjwang@dlut.edu.cn, c dbf71@163.com Keywords: white layer; surface roughness; model; high speed milling; hardened steel Abstract: Using solid carbide straight end mills with TiAlN coating, A P20 steel at 41HRC is machined in the cutting speed range of 301 to 754m/min.
The workpiece surface can exhibit a vastly different structure compared to that of the bulk of the metal material.
Materials Science & Engineering A, 390(1-2) (2005), 88-97 [5] Bosheh S.S, Mativenga P.
Journal of Materials Processing Technology, 157-158(12) (2004), 485-490 [8] Dewes R.
Journal of Materials Processing Technology, 69(1-3) (1997), 1-17 Fig.10 Cutting speed V and feed rate fz vs.

., Ltd, Guangzhou, China, 510385 2State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China, 510640 akonghh@gdzygy.com, bforest_c@163.com, c15502985670@163.com, dwujunzhang0116@163.com, echencl@gdzygy.com, f,*yangfei@scut.edu.cn Keywords: copper paper; thermal conductive rod; burning temperature; conventional components; harmful components Abstract.
In this study, the bleached wood pulp and Cu micro powder were used as raw materials, a thermally conductive cellulose/copper composite rod (TCCR) was prepared via a traditional paper-making method with lower manufacturing costs [17].
Experimental Materials.
Yu: Materials science and engineering of powder metallurgy Vol. 21 (2016) p. 878 [17] H.H.
Lu: Jouranl of Materials Chemistry A Vol. 3 (2015) p. 5294 [19] H.Z.

Kulu Tallinn University of Technology, Department of Materials Engineering, Ehitajate tee 5, 19086 Tallinn, Estonia aCorresponding author: vitali.podgurski@ttu.ee Keywords: diamond-like carbon, surface morphology, friction Abstract Diamond-like carbon (DLC) films were prepared on top of hard coatings, namely, prior to the DLC deposition, CrN, TiCN and nanocomposite nACo (nc-AlTiN/(a-Si3N4) layers were deposited on WC-Co substrates.
The theory is based on the model that friction is proportional to the real area of contact, and the key geometrical parameters of the surface are skewness and kurtosis.
Due to plasma etching on cathodes, traces of cathode materials in DLC are expected.
Robertson, Diamond-like amorphous carbon, Materials Science and Engineering. 37 (2002)129–281
Koga, Tribological properties of DLC films deposited on steel substrate with various surface roughness, Diamond & Related Materials. 13 (2004) 2211– 2215

DFT and HAADF-STEM Investigations of the Zn Effects on β″ Phase Structure in a Zn Added Al-Mg-Si-Cu Alloy Rui Yu1,2,3,a, Yong-An Zhang1,2,3,b* 1State Key Laboratory of Non-ferrous Metals and Processes, GRINM Group Co., LTD., Beijing 100088, China 2GRIMAT Engineering Institute Co., LTD., Beijing 101407, China 3General Research Institute for Nonferrous Metals, Beijing 100088, China ayuruigrinm@163.com, bzhangyongan@grinm.com Keywords: Al-Mg-Si-Cu alloys; Zn addition; First-principles calculations; HAADF-STEM; β″ phase structure; Formation enthalpy; Density of states.
Al-Mg-Si-(Cu) alloys possess excellent compositive performance such as high strength, low density, corrosion resistance, good forming and welding properties, which are the main automobile body sheets material used to replace steel [1].
The material used in the HAADF-STEM characterization was a Zn added 6A16 alloy, the composition of which was 0.57% Mg, 0.94% Si, 0.18% Cu, 0.60% Zn, 0.12% Mn, 0.072% Fe and balance Al (wt.%).
Acknowledgements This study was financially supported by National Key R&D Program of China (No. 2020YFF0218202, 2016YFB0300802).

Photoelectrochemistry [1-7] and photocatalysis [8-39] using semiconductor materials for the photon energy conversion have extensively been studied since the Honda-Fujishima effect [40] was reported.
Therefore, making new valence bands or electron donor levels above the valence band consisting of O2p orbitals (band engineering) is required for the sensitization of the TiO2 and SrTiO3 photocatalysts to visible light.
For example, visible-light responses of nickel and either tantalum or niobium-codoped TiO2 and SrTiO3 are due to the electronic transition from the electron donor levels consisting of occupied Ni2+ 3d orbitals to the conduction bands of host materials.
These are typical profiles for doped materials.
In the Z-scheme photocatalyst system, the SrTiO3:Cr/Ta and SrTiO3:Rh photocatalysts developed by transition metal cation doping are key materials.

Nanocrystals Synthesis by Microreactors Hiroyuki Nakamura1, a , Masato Uehara1,b and Hideaki Maeda1,2,c 1 Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 807-1, Shuku, Tosu, Saga, 841-0052 Japan. 2 Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, 816-8580 Japan.
These advantages show a potential of microreactor as an industrial reactor for high-mix low-volume production of materials which requires a well controlled reaction.
Different keys show different reaction trials.
The synthesized QDQW has a structure comprising a narrow band gap materials were sandwiched between wide band gap materials such like ZnS/CdSe/ZnS core/shell/shell, and here, they were synthesized by a stepwise procedure; ZnS core was synthesized at first and CdSe coating and ZnS coating was applied in a sequential manner.
In this study, CdSe and its composite materials were synthesized by microreactor.

China 2School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi’an 710129, P.R.
Therefore, studies of crack initiation location, crack growth path and fracture surface location have important theoretical and engineering significances.
The single crystal blade axis is [001] orientation in engineering.
Experiment 4.1 Experimental material and methods Single crystal superalloy DD6 is used in this study.
(b) Modeling specimen fracture surface of rabbet The analyses above show that the theoretical researches carried out by the finite element simulation of crack initiation location, crack growth path and fracture locations of rabbet have a good agreement with experimental results and engineering application.

The Trapezoid Counterweight Method in Dynamic Balance of Symmetric Flexible Rotor Han Hui1, a, Lina Hao1, b*, Zhang Qi2, c and Gao Xiang3, d 1Mechanical Engineering & Automation, Northeastern University, Shenyang, Liaoning Province, China 2Ying Kou power Supply Company, Ying Kou, Liaoning Province, China 3Mechanical Engineering, Shenyang Ligong University, 1-1-1 Shenyang, Liaoning Province, China a34352350@qq.com, bhaolina@me.neu.edu.cn, c18612112952@163.com, d617245930@qq.com Keywords: Dynamic balance, flexible rotor, modal analysis, harmonic analysis method, trapezoid counterweight.
Introduction On account of the design and construction factors, coupled with uneven material and manufacturing installation error and other reasons, the entire actual rotor center inertia principal axis more or less deviated from its rotation axis.
As a typical flexible rotor shaft drive system components has been widely used, however，its dynamic balancing technology has also been plagued by engineering and technical personnel [2].
The balance of the flexible rotor is balanced in a certain speed range in engineering, in order to eliminate the n order flexural mode of rotor，usually the rotor is driven in turn to the corresponding critical speed for the rotor dynamic balance detection and correction.
Journal of Engineering for Industry，Transactions of ASME, 1964：273～279

Numerical Simulation on Sudden Siltation Induced by winter Storm and large Waves in outer Channel of Huanghua Port, China Weisheng Zhang1,2,a, Jinshan Zhang1,2,b, Chen Chen3,c, Hongjun Zhao3,d 1 River and Harbor Engineering Department of Nanjing Hydraulic Research Institute, Nanjing 210029, China 2 Key Laboratory of Port, Waterway and Sedimentation Engineering, Ministry of Communications, Nanjing 210029, China 3 College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China a weisheng_zhang@163.com, b zhangjinshan@vip.163.com,c Tookysky@163.com, dloyhg@hhu.edu.cn Keyword: winter storm, numeric simulation, silty sand, sudden siltation, debris dike, reduce siltation Abstract: A multinest storm surge-wave-sediment model is applied to simulate strong storm surge caused by winter storm in Bohai Bay in Oct, 2003.
The bottom material of the Huanghua port is fine-silty sand, which is very active in water, i.e. easily in sediment-moving incipient and settling down.
Sketch of the local engineering at the Huanghua port, China Fig. 8.
[6] Jiaju Liu: Journal of Nanjing Hydraulic Research institute, Vol.2 (1988), p.69-73 (in Chinese) [7] Jiaju Liu: Hydro-Science and Engineering.

Ibrahim7,h 1Faculty of Engineering, Universiti Malaysia Sabah (UMS), 88400 Kota Kinabalu, Sabah, Malaysia 2Faculty of Mechanical Engineering & Technology, Universiti Malaysia Perlis (UniMAP), 02600 Arau, Perlis, Malaysia 3Institute of Nano Electronic Engineering, Universiti Malaysia Perlis (UniMAP), 01000 Kangar, Perlis, Malaysia 4Department of Material and Metallurgical Engineering, Institut Teknologi Sepuluh Nopember (ITS), 60111 Surabaya, Indonesia 5Department of Physics, Institut Teknologi Sepuluh Nopember (ITS), 60111 Surabaya, Indonesia 6Department of Medical Technology, Institut Teknologi Sepuluh Nopember (ITS), 60111 Surabaya, Indonesia 7Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis (UniMAP), 02600 Arau, Perlis, Malaysia a*nurafnan@ums.edu.my, buda@ums.edu.my , cnuraiman@unimap.edu.my, dhaziqajik010602@gmail.com, ewiwid@its.ac.id, fretno.asih@its.ac.id, gyuri@its.ac.id, hhulwaniibrahim@gmail.com Keywords: Energy Efficiency, ESP8266, Home Automation
Result and Discussion Hardware Analysis The automatic detection system plays a vital role in the IoT-powered smart home automation project, with the HC-SR04 ultrasonic sensor as a key component.