Search results

20 kV-Class Ultra-High Voltage 4H-SiC n-IE-IGBTs Akihiro Koyama1,2,a*, Yuji Kiuchi1,3, Tomonori Mizushima1,4, Kensuke Takenaka1,4, Shinichiro Matsunaga1,4, Mitsuru Sometani1, Koji Nakayama1, Hitoshi Ishimori1, Atsuko Kimoto1, Manabu Takei1,4, Tomohisa Kato1, Yoshiyuki Yonezawa1, and Hajime Okumura1 1National Institute of Advanced Industrial Science and Technology, 16-1 Onogawa, Tsukuba, Ibaraki, Japan 2Mitsubishi Electric Corporation, 8-1-1 Tsukaguchi-Honmachi, Amagasaki, Hyogo, Japan 3New Japan Radio Co., Ltd., 2-1-1 Fukuoka, Fujimino, Saitama, Japan 4Fuji Electric Co., Ltd., 4-18-1 Tsukama, Matsumoto, Nagano, Japan aKoyama.Akihiro@cw.MitsubishiElectric.co.jp Keywords: 4H-SiC, n-IGBTs, Bipolar, Ultra High Voltage, n-IE-IGBTs Abstract.
Forum 821-823 (2015) 847-850
Forum 924 (2018) 637-640
Choyke, Materials Science and Engineering B61–62 (1999) 229–233
Forum 858 (2016) 939-944

890Materials Science Forum Vols. *** (2004) pp.876-880 online at http://scientific.net  2004 Trans Tech Publications, Switzerland Study on the Machining Technology of Composite Materials J.Y.
Zhu 2,b 1 Mechanical and Vehicle Engineering College, Beijing Institute of Technology, Beijing, 100081, China 2 Zhuzhou Electrici Power Machinery & Technology Co.
The Materials Science Forum Vols. *** 877 thickness of PCD is about 0.5mm.
It's Materials Science Forum Vols. *** 879 turning regimes is ap=0.3mm ， f=0.1mm/r ， v=75m/min, without cutting fluid.
Advances in Materials Manufacturing Science and Technology 880 Conclusions (a) For machining composite materials of fiber reinforced and particle reinforced, superhard cutting tools are the best.

Park b , Department of Materials Science and Metallurgical Engineering, Nanomaterials Research Center, Sunchon National University, Sunchon 540-742, Korea a csha@futuremetal.com, bybpark@sunchon.ac.kr Keywords: Electroforming, Grain Growth, Invar, Nanostructure, OIM, Permalloy, Texture Abstract.
Acknowledgment This research was supported by a grant from the Center for Advanced Materials Processing (CAMP) of the 21st Century Frontier R&D Program, and from the Materials Development Program funded by the Ministry of Commerce, Industry and Energy, Korea.
Forum Vol. 408-412 (2002), p. 919
Forum Vol. 475-479 (2005), p. 3483
Forum Vol. 408-412 (2002), p. 931.

System Server uses Microsoft Windows 2000 Advanced Server operating system B.
Teaching test, announcements browse, scores query, lesson plan query, discussion forum, real time answering are performed by the students.
Discussion topic table in discussion forum (no., name, discussion topics, content); Discussion topic reply table (number, discussion topic, number, reply name, reply topic content, response time) System Implementation In combination with the basic functions of teaching management system, the design and development process of the system mainly solves the following technological problems: system management and login control, teaching test system’s establishment and management, student management system establishment, the construction and management of performance management system, the construction of announcement management system, the establishment and management of q&a chat, discuss garden, etc.
Chat answering and discussion forum Teachers and students can log on to this module at the same appointed time.
Journal of Anhui Institute of Engineering Technology. 2003, 17 (1), 63-66 [14] Wu Yuping.

Chesnokov, Methodical basis of investigation of influence of the iron ore materials and coke metallurgical characteristics on the blast furnace smelting efficiency, Advanced Materials Research, 602-604 (2013), 365-375
Vyaznikova, Processing of agglomerates and pellets containing various amounts of titanium dioxide, Materials Science Forum, 1026 (2021), 102-108
Vyaznikova, Physical-chemical and pyrometallurgical estimation of processing of complex ores with extraction of iron, vanadium, titanium, Defect and Diffusion Forum, 407 (2021), 41-50
Alektorov, Study of the main metallurgical characteristics of iron ore raw materials (sinter and pellets), IOP Conference Series: Materials Science and Engineering, 966 (2020), 347-362
Shubin, The role of basicity in the formation of the structure and properties of iron ore agglomerates, Defect and Diffusion Forum, 413 (2021), 201-208.

Preface Engineering problem solving is essentially that of design and optimization, which is critical to the success of product development and implementation.
As such, the editors of the current issue of the book series and its corresponding conference organizers decided to continually focus their efforts on providing a forum for the international researchers and engineers, from mechanical and manufacturing engineering area, to exchange ideas and showcase their latest research findings.
Being the third one in a series, the book Advances in Engineering Design and Optimization III, and the conference Third International Conference on Engineering Design and Optimization, Shaoxing, PRC (ICEDO 2012), have not only attracted many attentions from academics and engineering sectors worldwide, but also won many supports from various levels of government and managerial organizations.
Similar to the last two issues of the series, Advances in Engineering Design and Optimization (in 2010) and Advances in Engineering Design and Optimization II (in 2011), the current book is also a compilation of selected and peer-reviewed papers from its corresponding conference, i.e.
Together, they present a state-of-art research results in the aforementioned areas of engineering design and optimization.

Alloy Design Based on Molecular Orbital Method Masahiko Morinaga a, Yoshinori Murata b and Hiroshi Yukawa c Department of Materials Science and Engineering, Graduate School of Engineering, and Institute for Advanced Research, Nagoya University Nagoya 464-8603, JAPAN a morinaga@numse.nagoya-uac.jp, b murata@numse.nagoya-uac.jp, c hiroshi@numse.nagoya-uac.jp Keywords: molecular orbital method, alloy design, heat resistant alloy, Ni-based superalloy, ferritic steel, impurity element, defect structure, New Phacomp, d-electrons concept.
[4] M.Morinaga, Y.Murata and H.Yukawa: Materials Science Forum, 449-452 (2004), p.37
[10] M.Yoshino, Y.Shinzato and M.Morinaga: Materials Science Forum, 449-452 (2004), p.713.

Superplastic Forming of Oxide Ceramic Composite Chen Guoqinga, 1, Zu Yufei1, Luo Junting2, Fu Xuesong1 and Zhou Wenlong1 1 School of Materials Science & Engineering, Dalian University of Technology, Dalian 116085, China 2 State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P.R.
Forum. 551-552 (2007) 527-532
Goto, Superplastic forming of ZrO2/Al2O3 composite, Key Engineering Materials. 159-160 (1999) 181-186
Forum. 243-245 (1997) 417-424
Fu, Fabrication and superplastic deformation of Al2O3/YSZ/MgAl2O4 composite ceramic, Advanced Materials Research. 105-106 (2010) 188-191.

Materials Science Forum Vols. *** (2004) pp.225-229 online at http://scientific.net  2004 Trans Tech Publications, Switzerland Fast Consolidation of Iron Powders by Pulse Electric Current Sintering Y.Y.
Xia 1,a 1 College of Mechanical Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, P.
Although PECS has been used to produce some iron-base soft magnets [4-5], cast iron P/M materials [6-7] and ZrO2 / stainless steel functionally graded materials [8], there are few reports on applications of this technique to engineering steels.
However, when the powders were sintered at a pulse peak of 3000 A, the density 50µm 50µm 50µm 50µm Advances in Materials Manufacturing Science and Technology 228 grew quickly to a maximum of 7.48 g/cm3 at 4 min, and then approximately leveled off up to 6 min.
However, a too high pulse peak caused an Materials Science Forum Vols. *** 229 unexpected fast sintering rate in the initial stage and brought in entrapped gases, so that a further densification in the final sintering stage was hindered.

There are some methods to be used to select appropriate temperature variables for thermal error component modeling, which are (1) engineering judgment, (2) correlation analysis, (3) step-wise regression, and (4) grouping searching [5].
Advances in Materials Manufacturing Science and Technology 588 Modeling of Position Independent Thermal Error Components.
Materials Science Forum Vols. *** 591 References [1] P.
Liu: Journal of Engineering for Industry Vol. 115 (1993), p. 149 [2] M.
Ni, et al: J. of Engineering for Industry Vol. 114 (1993), p. 472 [4] J.S.