氮化硅陶瓷粉末的選區激光燒結

趙靖; 馬文江; 曹文斌; 李艷紅; 李江濤; 葛昌純

doi:10.13374/j.issn1001-053x.2006.11.008

氮化硅陶瓷粉末的選區激光燒結

doi: 10.13374/j.issn1001-053x.2006.11.008

1. 北京科技大學特種陶瓷研究室, 北京 100083;
2. 北京科技大學應用科學學院, 北京 100083;
3. 中國科學院理化技術研究所微珠工程研究中心, 北京 100101

基金項目:

教育部博士基金資助項目

北京市科技新星計劃資助(No.2003B12)

國家重點基礎研究“973計劃”資助項目(No.2004CB719802)

詳細信息

作者簡介:
趙靖(1977-),男,博士研究生;曹文斌(1970-),男,教授,博士

中圖分類號: TB321
計量
- 文章訪問數: 258
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- 被引次數: 0
出版歷程
- 收稿日期: 2005-08-25
- 修回日期: 2005-10-08
- 網絡出版日期: 2021-08-24

Selective laser sintering of coated Si₃N₄ ceramic powders

1. Laboratory of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
2. Applied Science School, University of Science and Technology Beijing, Beijing 100083, China;
3. Department of Engineering Research Center for Microsphere Materials, Technical Institute of Physics and Chemistry, Chinese Academic of Sciences, Beijing 100101, China

摘要

摘要: 進行了將粘結劑包覆在陶瓷粉末表面以提高陶瓷粉末選區激光燒結（SLS）成型性能的研究．利用甲基丙烯酸甲酯單體以及甲基丙烯酸丁酯單體共聚反應制備出共聚物粘結劑，并分別采用紅外光譜和DSC／TG法對其進行分析．結果表明，所制備的共聚物的主要成分是聚甲基丙烯酸甲酯和聚甲基丙烯酸丁酯，其玻璃化溫度為102．0℃，在300～400℃之間失重超過80％．將自制共聚物與磷酸二氫銨以適當的比例混合，采用機械混合與噴霧干燥等手段對Si₃N₄陶瓷粉進行了包覆處理，并在SLS設備上進行了燒結成型實驗，成功地實現了包覆粉末的SLS燒結．
- 選區激光燒結 /
- 粘結劑 /
- SI₃N₄陶瓷 /
- 噴霧干燥 /
- 包覆
Abstract: Efforts were focused on the improvement of fusibility of selective laser sintering (SLS) ceramic powders by the approach of coating some low melt-point binders on them. Methylmethacrylate monomer and butylmethacrylate monomer were synthesized and prepared as sintering binder. The infrared spectrum and DSC/TG method were employed to analyze the copolymer. The results showed the main composition of the copolymer is polymethylmethacrylate and polybutylmethacrylate, the glass transition temperature is 102.0℃ and the heat decomposition was beyond 80% between 300-400℃. The self-made copolymer and the inorganic binder NH₄H₂PO₄ were mixed together by a proper proportion. The binders were used to coat Si₃N₄ ceramic powders by mechanical mixing and spray drying. The coated powders were sintered successfully by SLS.
- selective laser sintering /
- copolymer binder /
- Si₃N₄ ceramic /
- spray drying /
- coating