| 低毒单体DMAA用于ZrO2/Al2O3坯体注凝成型 |
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| 引用本文： | 张超,丘泰.低毒单体DMAA用于ZrO2/Al2O3坯体注凝成型[J].复合材料学报,2012,29(1):79-84. |
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| 作者姓名： | 张超 丘泰 |
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| 作者单位： | 南京工业大学 材料科学与工程学院, 南京 210009 |
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| 基金项目： | 江苏省高校优势学科建设工程资助项目 |
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| 摘 要： | 采用低毒的单体N, N-二甲基丙烯酰胺(DMAA)制备了氧化锆增韧氧化铝(ZrO2/Al2O3)坯体。讨论了分散剂的用量、 ZrO2/Al2O3浆料的pH值、 粉体中ZrO2含量、 粉体所占浆料的固相体积分数、 球磨时间、 预混液中DMAA的浓度(质量分数)对ZrO2/Al2O3浆料黏度的影响。并研究了注凝成型ZrO2/Al2O3坯体的性能和显微结构。结果表明, 当浆料pH值为9, 分散剂的添加量为ZrO2/Al2O3粉体质量的0.6%, 球磨时间为6 h, ZrO2/Al2O3浆料具有最小的黏度。固相体积分数的提高和DMAA加入量的增大都会提高ZrO2/Al2O3浆料的黏度, ZrO2的加入会降低浆料的黏度。用DMAA制备得到的ZrO2/Al2O3坯体结构均匀, 抗弯强度达到25 MPa。
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| 关 键 词： | 低毒单体 DMAA 注凝成型 黏度 ZrO2/Al2O3坯体 抗弯强度 |
| 收稿时间： | 2010-12-15 |
| 修稿时间： | 2011-04-12 |
Fabrication of ZrO2/Al2O3 green body through gelcasting process using low-toxicity monomer DMAA |
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| ZHANG Chao,QIU Tai.Fabrication of ZrO2/Al2O3 green body through gelcasting process using low-toxicity monomer DMAA[J].Acta Materiae Compositae Sinica,2012,29(1):79-84. |
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| Authors: | ZHANG Chao QIU Tai |
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| Affiliation: | College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China |
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| Abstract: | ZrO2/Al2O3 green bodies were prepared using a low-toxicity monomer N, N-dimethyl acrylamide (DMAA). The effects of the amount of dispersant, ZrO2/Al2O3 suspensions pH value, ZrO2 content in ZrO2/Al2O3 powders, solid volume fraction of ZrO2/Al2O3 powders in slurries, ball-milled time and DMAA content (mass fraction) in the premix solution on the viscosity of ZrO2/Al2O3 slurries were discussed. The mechanical properties and microstructure of ZrO2/Al2O3 green body by gelcasting were investigated.The results show that low viscosity ZrO2/Al2O3 suspension was obtained when the suspension pH is 9, the dispersant content is 0.6% of ZrO2/Al2O3 powders (mass ratio), the ball-milled time is 6 h. The viscosity of suspensions increases with increasing solid volume fraction and DMAA content, but decrease with increasing the content of ZrO2. The resultant green body has uniform structure and the bending strength is as high as 25 MPa. |
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| Keywords: | low-toxicity monomer DMAA gelcasting viscosity " target="_blank">2/Al2O3 green bodyzz')" href="#"> ZrO2/Al2O3 green body bending strength |
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