| 氧化锆粉体表面改性及其注射成型水脱脂研究 |
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| 引用本文： | 杨现锋,谢志鹏,黄勇.氧化锆粉体表面改性及其注射成型水脱脂研究[J].稀有金属材料与工程,2009,38(Z1). |
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| 作者姓名： | 杨现锋 谢志鹏 黄勇 |
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| 作者单位： | 清华大学新型陶瓷与精细工艺国家重点实验室,北京,100084 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | 采用硬脂酸表面改性以改善陶瓷颗粒表面和有机粘结剂的相容性.结果表明,硬脂酸和陶瓷颗粒表面之间发生了稳定的化学结合,提高了注射喂料的流动性和坯体的强度.坯体显微结构分析表明,表面改性促进了粉体在有机粘结剂中的稳定分散.粉体表面改性明显提高了水脱脂速率,坯体7 h脱脂率达到了88%,脱脂过程中水溶性组分在坯体中的表观扩散系数为1.14×10-7cm2/s.
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| 关 键 词： | 氧化锆 注射成型 粘结剂 表面改性 脱脂 |
Surface Modification and Water Debinding in Zirconia Powder Injection Molding |
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| Yang Xianfeng,Xie Zhipeng,Huang Yong.Surface Modification and Water Debinding in Zirconia Powder Injection Molding[J].Rare Metal Materials and Engineering,2009,38(Z1). |
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| Authors: | Yang Xianfeng Xie Zhipeng Huang Yong |
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| Affiliation: | Yang Xianfeng,Xie Zhipeng,Huang Yong (State Key Laboratory of New Ceramics , Fine Processing,Tsinghua University,Beijing 100084,China) |
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| Abstract: | The surface of the zirconia powder was firstly modified by stearic acid to reduce the aggregates and improve the compatibility with the organic binder. The results showed that the chemical bond between powder surface and stearic acid improved the flowability of the feedstock and the strength of the green body. The microstructure of the green body showed that the dispersion of zirconia particles in organic binder was improved. Surface modification could also enhance the debinding rate. When the debinding tim... |
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| Keywords: | zirconia injection molding binder surface modification debinding |
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