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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials >Surface roughness of microstructured component fabricated by mu MIM
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Surface roughness of microstructured component fabricated by mu MIM

机译：由mu MIM制造的微结构部件的表面粗糙度

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Micro metal injection moulding (mu MIM) is being developed for possible mass production of metallic microstructured components. In the micrometer regime, consideration of surface roughness becomes more important as dimensional tolerance is towards the range of surface roughness and surface force becomes dominant at the surface-to-volume ratio encountered. In this paper, the effects of sintering temperature and time on surface roughness (R_a) and surface grain size (G) of 316L stainless steel microstructured components fabricated by mu MIM were investigated. In particular, the top surface of the microstructure and the substructure area, on which the microstructures were positioned, were haracterised. After sintering, R_a values at these areas were similar even though disparate magnitudes were measured in the mould insert and the moulded microstructured component. R_a and G were found to increase with sintering temperature for the top surface of the microstructure. A smaller G tended to yield lower R_a and the substructure had smaller grain size and lower R_a value than the comparatively free-standing microstructures.
机译：正在开发微金属注射成型（mu MIM），以可能批量生产金属微结构部件。在微米状态下，考虑表面粗糙度变得更加重要，因为尺寸公差朝向表面粗糙度的范围，并且表面力在遇到的体积比时占主导地位。本文研究了烧结温度和时间对由mu MIM制造的316L不锈钢微结构部件的表面粗糙度（R_a）和表面晶粒尺寸（G）的影响。特别地，将微结构的顶表面和放置微结构的子结构区域弄湿。烧结后，即使在模具嵌件和模制的微结构部件中测量到不同的幅度，这些区域的R_a值也相似。发现R_a和G随微结构的顶表面的烧结温度而增加。与相对独立的微结构相比，较小的G倾向于产生较低的R_a，并且子结构具有较小的晶粒尺寸和较低的R_a值。

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