ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The practical uses of soft magnetic composite(SMC) for an electrical motor is presented inthis paper. SMC allows obtaining improved stator and core shapes as well as totally new designconcepts such as claw pole motor. However, a major disadvantage of soft magnetic composites wastheir weak strength. In this study, spark plasma sintering (SPS) was utilized to improve the strengthof SMC. Advantages of the SPS process over other conventional sintering process are the fasterheating and cooling rates ensured and higher pressure applied during the sintering procedure. Thisallows obtaining high strength products in short periods of time to meet with industrial applicationwithout insulation destruction. This paper introduces the development of high strength soft magneticcomposite motor core and examples of practical application for industries. The result showed that theSPS process increased the fracture strength, about 1.3 to 1.7 times, of SMC compare to theconventional compaction. Also we derive method to reduce the iron loss in the SPS sintering processusing control forming temperature. As the forming temperature decreased from 500°C to 300°C,reduction of iron-loss was obtained from 192W/kg to 21W/kg by using SPS sintering process.Moreover, with increased the SPS sintering process pressure value from 250MPa to 800MPa which isthe conventional compaction condition and decreased forming temperature to 200°C, iron-loss wasmeasured. The results showed that iron-loss was obtained 11.42W/kg and it was similar value ofconventional compaction results
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.609.pdf
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