Early Characterization of NdFeB and NdFeB /Co-Al Composites of Sintering Using SPS
| Autor: | Salim Mustofa, Bambang Sugeng, Bambang Hermanto, Sumaryo, Setyo Purwanto, Nanang Sudrajat, Toto Sudiro |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Sintering Spark plasma sintering 02 engineering and technology Coercivity 021001 nanoscience & nanotechnology 01 natural sciences Characterization (materials science) Neodymium magnet Mechanics of Materials 0103 physical sciences General Materials Science Composite material 0210 nano-technology |
| Zdroj: | Key Engineering Materials. 855:102-107 |
| ISSN: | 1662-9795 |
| Popis: | The purpose of this study is to obtain a permanent magnet end-product from NdFeB and NdFeB / Co-Al composite material from SPS sintering which has high density with small grain size and strong corrosion resistance. NdFeB powder and NdFeB/Co-Al composites (0.2 and 0.5weight%) of several micron-sized particles resulting from the milling process have been successfully sintered with a temperature parameter of 800°C for 10 minutes and a pressure of 50MPa in dies with a diameter of 20 mm in a vacuum chamber. Optical micrographs show that the grains are uniformly and smoothly distributed throughout the surface. This is showing the types of grain distributions which has good mechanical properties. The X-ray analysis result shows the phase analysis confirms the presence of such main PM phases as Nd, Fe and B. From SEM observation, the particles have irregular shapes and a large particle size distribution. The density value of the sample is in the range of 7.1 - 7.3. From the density measurement it is also known that the sintering sample with SPS has a high-density level which is close to 100%, so it can be said that it has formed fully dense. |
| Databáze: | OpenAIRE |
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