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Synthesis of Fe3O4 and Fe2O3 Nanocrystal from Iron Sand with Semi-Automatic Coprecipitator Arifa Diana Agustin1,a*, Arum Nur Kusuma Wardani1,b, Sari Ramadhani Meutuah1,c, Indra Sidharta2,d and Darminto1,e 1Department of Physics, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia 2Department of Mechanical Engineering, Faculty of Industrial Technology and Systems Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia aarifadiana98@gmail.com, barumwardani15.aw@gmail.com, csarirmdhnimeutuah@gmail.com, dindra.sidharta@gmail.com, edarminto@physics.its.ac.id Keywords: Iron sand, Fe2O3 nanocrystal, Fe3O4 nanocrystal, Semi-automatic coprecipitator Abstract.
Acknowledgment This research was supported by Research and Innovation Program for Advanced Indonesia (RIIM) for 4th, No. 161/IV/KS/11/2023 and 3183/PKS/ITS/2023, November 27, 2023 References [1] Y.
Forum. 827 (2015) 29–234
Forum. 1028 (2021) 50–55

Thirunavukkarasu, 4Sukumar Puhan 1: Research scholar, Anna University of Technology Coimbatore, 2: Associate Professor, Institute of Road and Transport Technology, Erode 3: Professor, TJS College of Engineering, Chennai 4: Professor in GKM College of Engineering & Technology, E mail: kannan.paneer@yahoo.com, balamurugan@irttech.ac.in, drkthi@gmail.com, sp_anna2006@yahoo.co.in Keywords: Friction welding, interlayers, types of fracture, particulate fracture, microstructures, Friction pressure, particle accumulation.
[2] Misirli Cenk, Sahin Mumin, Kuscu Hilmi, 2012, Temperature Determination of St-Al Joints during Friction Welding, Advanced Materials Research, Vol. 463 – 464, 1538-1542
Lee, Nho Kwang Park, 2004, Characterization of Friction Welding for IN713LC and AISI 4140 Steel, Materials Science Forum, Vol. 449 - 452), 53- 56
[5] Shinji Fukumoto, Toshitsugu Ono, Soshi Tanaka, Harushige Tsubakino, Tomoki Tomita, Masatoshi Aritoshi, Kozo Okita, 2003, Microstructures of Friction Welded Joints of AZ31 to AM60 Magnesium Alloys, Materials Science Forum, Vol. 419 - 422, 399- 422

On stabilization of 3C-SiC using low off-axis 6H-SiC substrates Valdas Jokubavicius1, a*, Björn Lundqvist1,b, Philip Hens1,c, Rickard Liljedahl1,d, Rositza Yakimova1,e, Satoshi Kamiyama2,f and Mikael Syväjärvi1,g 1Department of Physics, Chemistry and Biology, Linköping University, SE-58183, Linköping, Sweden 2Department of Materials Science and Engineering, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya 468-8502, Japan a*valjo@ifm.liu.se, bbjolu541@student.liu.se, cphihe@ifm.liu.se, dricli@ifm.liu.se, eroy@ifm.liu.se, fskami@ccmfs.meijo-u.ac.jp, gmisyv@ifm.liu.se Keywords: 3C-SiC, sublimation epitaxy, low off-axis 6H-SiC Abstract.
Introduction Cubic silicon carbide (3C-SiC) is an excellent candidate for fabrication of advanced metal–oxide–semiconductor field-effect transistors, micro-electro-mechanical systems or even to be used as a substrate for nitrides growth for various optoelectronic applications.
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Paul Chow 1,c 1 Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York, USA 12180 a lic6@rpi.edu, bbhati@rpi.edu, cchowt@rpi.edu Keywords: 4H-SiC, selective epitaxial growth, in-situ etching, chemical vapor deposition Abstract.
Acknowledgements: The work at RPI was supported by the Defense Advanced Research Projects Agency (DARPA) contract #DAAD19-02-1-026.
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Ambrozio, Key Engineering Materials, Vols 189-191, 2001, pp 555-560

In spite of this fact, advanced SiC devices, such as GTOs and IGBTs have been reported [1,2], the commercial SiC power switch development is still confined to the basic framework of VJFET, MOSFET, and BJT devices because of the present state of processing technology [3-9].
Self-aligned techniques can also be employed to reduce the extrinsic base resistance in order to improve conduction and switching performance of power SiC BJTs; • Interface-related issues causing poor channel mobility in MOSFETs and short surface minority carrier lifetime in BJTs require serious surface engineering, which may involve using alternative gate and field dielectrics, the introduction of a stable surface charge, or other approaches; • Reduction of p-type ohmic contact resistance is important to improve switching performance of power SiC BJTs by reduction of the base resistance; • Development of an efficient and reliable edge termination and passivation techniques will allow for the thinner and higher doped voltage blocking regions which will further decrease both onstate and switching power losses; • The continued work toward integration of different types of devices on the same chip may finally lead to a fully integrated voltage controlled SiC switch.
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Under the perspective of low carbon the New Energy Automobile Industry development and research based on collaborative innovation –A Case Study in Beijing -Tianjin- Hebei Area Sun Jie1, a, Hujiang Gong2, b and Wenfeng Liu1, c 1 School of Management, Tianjin University of Technology, Tianjin, China 2 Project Department, Tianjin Wuqing District Construction Engineering Company first construction company, Tianjin, China asyuan323@163.com, bgonghuijiang123@126.com, cliuwenfeng1990@126.com Keywords: new energy automotive industry, low-carbon economy, collaborative innovation.
Showing key enterprises the way, like great wall motor, how to accelerate the pace of research and development of new energy vehicles; supporting enterprise for developing and producing pure electric, plug-in hybrid electric vehicles and electric power modules, advanced batteries, motor and drive systems, electro-driven variable speed systems, hybrid electric car coupling and gear.
Based on collaborative innovation mechanism of industrial clusters innovation network [J] Chinese Science and Technology Forum, 2008 (7): 26-30
Government's new energy vehicle development incentive regulation [J] Economic Forum, 2009 (1): 37-38

Today’s advanced steels are required to possess high strength and ductility.
Introduction Today, advanced steels, mainly those that are used in the automotive industry, are required to possess high strength and ductility.
Fucheng: Inconsistent effects of mechanical stability of retained austenite on ductility and toughness of transformation-induced plasticity steels, Materials Science & Engineering A, 2013, vol. 578, pp. 370–376
Klauberová: The [4] Effect of Mn and Si on the Properties of Advanced High Strength Steels Processed by Quenching and Partitioning.
Materials Science Forum, 2010, vol. 654-656, pp. 94-97

Materials Engineering, National Chung Hsing University, 40227 Taichung, Taiwan/R.O.C. 2 Institute of Solid State Physics, RAS, Chernogolovka, 142432 Russia 3 Dept.
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Zhang2,b 1School of Mechanical and Electric Engineering, Zhongyuan University of technology 2College of Information & Business, Zhongyuan University of technology Zhengzhou, 450007, P.R.
Introduction Fine-blanking technology is an advanced sheet metal processing technology.
Wierzbicki: Journal of Engineering Materials and Technology Vol. 126 (2004), p. 314 [5] H.
Ding: Materials Science Forum Vol.575-578 (2009), p.316 [6] J.H.
Fan, Z.M.Zhang: Materials Science Forum Vol. 628-629 (2009) p.541