| 基于选择性激光烧结C-Al_2O_3复合粉体微观形貌和成型机理的研究 |
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| 引用本文： | 冀勇,王鹏,贾建峰,宋红章,胡行.基于选择性激光烧结C-Al_2O_3复合粉体微观形貌和成型机理的研究[J].材料导报,2012,26(8):105-108,116. |
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| 作者姓名： | 冀勇 王鹏 贾建峰 宋红章 胡行 |
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| 作者单位： | 1. 郑州大学物理工程学院材料物理实验室,郑州,450052
2. 国家电网中电装备许昌智能中压开关研究中心,许昌,461000 |
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| 摘 要： | 用正交试验设计来安排试验,对高温烧结前后样品的宏观和微观结构进行表征。结果表明,样品的结构特征与激光烧结工艺参数密切相关,并且激光烧结样品的致密度、升温和降温速率、保温时间以及烧结助剂的选择,对最终样品的致密度和力学性能的提高有着重大影响。同时分析了选择性激光烧结的机理,发现激光束与粉末的作用是一个动态瞬间的熔化-凝固的平衡过程。
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| 关 键 词： | 选择性激光烧结 C-AlO复合粉体 微观形貌 成型机理 正交设计 |
Study on Microstructure and Forming Mechanism Based on Selective Laser Sintering C-Al2O3 Composite Powder |
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| JI Yong
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WANG Peng
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JIA Jianfeng
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SONG Hongzhang
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HU Xing.Study on Microstructure and Forming Mechanism Based on Selective Laser Sintering C-Al2O3 Composite Powder[J].Materials Review,2012,26(8):105-108,116. |
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| Authors: | JI Yong WANG Peng JIA Jianfeng SONG Hongzhang HU Xing |
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| Affiliation: | 1 (1 Laboratory of Material Physics,Physical Engineering College of Zhengzhou University,Zhengzhou 450052; 2 Xuchang Intelligent Medium-Voltage Switchgear Research Center,State Grid,China Electric Power Equipment and Technology Co.,LTD.,Xuchang 461000) |
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| Abstract: | With orthogonal experiment design to arrange experiments,macro and micro structures of the samples before and after high temperature sintering were characterized.Results show that structural characteristics of the samples and laser sintering process parameters are closely related,and sample density,heating and cooling rates,holding time and the choice of sintering aids have a significant impact on the final sample density and mechanical performance improvement.Meanwhile the mechanism of selective laser sintering are analyzed,and found that selective laser sintering is a complex non-equilibrium,instantaneous and dynamic process. |
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| Keywords: | selective laser sintering C-Al2O3 composite powder microstructure forming mechanism ortho-gonal design |
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