 Wysłany: Wto 9:25, 05 Kwi 2011 Temat postu: Bi MnBi eutectic composite morphology of MnBi pha |
|
| Bi / MnBi eutectic composite morphology of MnBi phase
Control. For ( 】 J20) surface and (J010) viii B) with C -axis parallel to the surface , and therefore the faster growth of non- close-packed (oooJ) surface growth can continue without disappearing , so much growth trend along the C axis Aspect ratio ? c, can be greater than 3.0 , so that eventually grow into a frog for the V -shaped cross-section of slender smooth fibers. 8 shows that the MnBi fiber three-dimensional model. Thus , the aforementioned Cheng Erwei the metallographic observation was also found in elongated MnBi pomegranate -shaped or V -shaped double- streaks (Figure 3 ( 1]) ,scarpe nike 2011, Figure 4 (dj. This is because the observed surface of fiber in the V -shaped MnBi Due to the interception of a different direction . section perpendicular to the C -axis , you can see outside. angle is 60 . , the V- shaped angle was j20 I; if the section tilted some, the outer angle of less than 6 ore . The angle is less than l20., which was elongated V -shaped 1I; if the cross section of flat cutting surface of V- tung, the three-dimensional model of MnBi fiber line in the c -axis , with the interception there are two different positions, morphology of MnBi , a Species is a common strip Ⅲ, there is a V -shaped cut in the bottom zone , there is clarity of the twins apart stripes 1v. counsels of the . metallography see MnBj; phase 2 r -base variety Other . Bi / MnBi eutectic composites in { the Zhu plastic plastic some are cross-sectional shape for the V -shaped three-dimensional crystals of long fiber -like reflection of the two-dimensional plane . It is worth noting that the growth of total product phase By the thermodynamics and kinetics , and many other factors, the situation is more complicated growth mechanism of MnBi phase in more detail yet to be studied in depth .5 conclusions a.MnBi fiber is composed of two each side at 60 . 's most close-packed atomic A (n) plane and two each into 120. 's second close-packed (10 mushrooms ) fBi) from the V -shaped closure . b. metallographic observation morphology seen in a variety of MnBi phase V are cross section Three-dimensional shape of the long fibers in the two-dimensional plane of the crystal shape of reflection . |
|
