Tag Archives: powder metallurgy

2445–2454 Y. Usherenko, V. Mironovs, V. Lapkovskis, S. Usherenko and V. Gluschenkov
Powder particle flow acceleration methods for simulation of interaction with materials used in spacecrafts
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Powder particle flow acceleration methods for simulation of interaction with materials used in spacecrafts

Y. Usherenko¹*, V. Mironovs¹, V. Lapkovskis¹, S. Usherenko² and V. Gluschenkov³

¹Riga Technical University, Civil Engineering Department, Scientific Laboratory of Powder Materials, Kipsalas str 6A-110, LV-1048 Riga, Latvia
²Belarusian National Technical University, Mechanical Engineering Faculty, Department of Powder Metallurgy, Welding and Material Production Technology, Nezavisimosty Ave., 65, BL220013 Minsk, Belarus
³Samara University, Moskovskoye shosse, 34, NIL-41, RU443086 Samara, Russia
*Correspondence: osher_yu@mail.ru

Abstract:

In recent decades, the role of satellites for monitoring the condition of agricultural land and forests, as well as in the study of natural resources, has especially increased. The amount of debris in near-Earth space is constantly increasing, which creates a real danger to the operation of satellites and other flying objects. The failures of satellites and spacecrafts increase the cost of their production and inhibit the development of the industry, lead to pollution of near-earth space by space debris. The U.S.-based Space Surveillance Network is currently tracking about 40,000 space objects- the vast majority of which are defunct satellites and fragments from collisions. It was estimated that there are more than 8,378 tons of junk around the Earth at speeds of up to 70 km h-1, threatening functioning spacecrafts. Development of a new method for ground-based testing of protective materials, microchips and control systems will enable to avoid further pollution of near-Earth space.
This paper discusses methods for accelerating fine particles using explosive devices and an electromagnetic field and the possibility of using them to develop and research protective materials.

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1289-1294 A. Yonetken and A. Erol
Production and characterization of Al-BN composite materials using by powder metallurgy
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Production and characterization of Al-BN composite materials using by powder metallurgy

A. Yonetken¹* and A. Erol²

¹University of Afyon Kocatepe, Faculty of Engineering, Department of Electrical Engineering, ANS campus, TR03200 Afyonkarahisar, Turkey
²University of Afyon Kocatepe, Faculty of Technology, Department of Metallurgy and Materials Engineering, ANS campus, TR03200 Afyonkarahisar, Turkey
*Correspondence: yonetken@aku.edu.tr

Abstract:

Aluminum matrix composites containing 3, 6, 9, 12 and 15% BN has been fabricated by conventional microwave sintering at 550 °C temperature. Compounds formation between Al and BN powders is observed after sintering under Ar shroud. XRD, SEM (Scanning Electron Microscope), mechanical testing and measurements were employed to characterize the properties of Al + BN composite. Experimental results suggest that the best properties as hardness 42, 62 HV were obtained for Al+12% BN composite.

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1130–1137 A. Yonetken and A. Erol
Production and characterization of Ni-Co (WC) composites materials
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Production and characterization of Ni-Co (WC) composites materials

A. Yonetken¹* and A. Erol²

¹University of Afyon Kocatepe, Faculty of Engineering, Department of Electrical Engineering, ANS Campus, TR 03200 Afyonkarahisar, Turkey
²University of Afyon Kocatepe, Faculty of Technology, Department of Metallurgy and Materials Engineering, ANS Campus, TR 03200 Afyonkarahisar, Turkey
*Correspondence: yonetken@aku.edu.tr

Abstract:

Ceramic-Metal Composite such as NiWC, CoWC are among advanced technology materials that have outstanding mechanical and physical properties for high temperature applications. Especially low density and high hardness properties stand out in such ceramic-metal composite. The microstructure, mechanical properties of %60Ni, %20Co and %20WC powders have been sintered by using tube furnace at 1,000–1,100–1,200–1,300–1,400 °C temperature. Mecahnical proporties and metalograhphic analysis were investigated after sintering. NiCo phases observed after metallographic analaysis. XRD, SEM (Scanning Electron Microscope)results showed us best microhardness of composites 174.16 HV, 8,563 g cm-3 density were obtained at 1,400 °C sintering tempareture.

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