Al2O3-TiO2纳米团聚颗粒及其激光烧结体微观形貌
Microstructure of Nanostructured Al2O3-TiO2 Powders and Its Laser Sintered Sample
摘 要
对Al2O3-TiO2纳米团聚颗粒重构球体的形貌及结构进行了分析,用激光技术对其进行了烧结试验;用SEM和EDS等手段对烧结体组织结构进行了分析.结果表明:纳米结构团聚颗粒在重构烧结时,内外部形貌差别与球体粒径有关;激光烧结体是网状富钛重结晶相包围着氧化铝相,而且该相有未熔纳米粒子.
团聚颗粒
激光烧结
Al2O3-TiO2 nanoparticle
agglomerated particle
laser sintering
Abstract
Morphology and structure of nanostructured Al2O3-TiO2 particles were analyzed.Bulk sintered sample was fabricated from reconstituted microparticles by laser sintering technology.SEM and EDS were applied to analyze the microstructure and components of the sample.The results show that the morphology difference between inside and outside of sintered particles was related to the particle size.It was also observed that sintered structure was formed by rich Ti net-like remelted phase and isolated alumina phase in which some residual Al2O3 nano-particles existed.
中图分类号 TG125.4
所属栏目 新材料 新工艺
基金项目 国家自然科学基金资助项目(59975046,50305010);江苏省自然科学基金重点资助项目(BK2004005)
收稿日期 2007/10/7
修改稿日期 2008/8/2
网络出版日期
作者单位点击查看
备注沈理达(1979- ),男,江苏张家港人,博士研究生.
引用该论文: SHEN Li-da,WANG Dong-sheng,HUANG Yin-hui,TIAN Zong-jun,HUA Guo-ran. Microstructure of Nanostructured Al2O3-TiO2 Powders and Its Laser Sintered Sample[J]. Materials for mechancial engineering, 2008, 32(10): 40～43
沈理达,王东生,黄因慧,田宗军,花国然. Al2O3-TiO2纳米团聚颗粒及其激光烧结体微观形貌[J]. 机械工程材料, 2008, 32(10): 40～43
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参考文献
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【4】余志勇,郝斌,崔华.纳米SiC颗粒增强铝基复合材料制备工艺进展[J].材料导报,2006,20(7):206-208.
【5】张旭,孙风久.有机/无机纳米复合材料的研究进展[J].材料导报,2006,20(7):212-214.
【6】张巨先,高陇桥.Al2O3/SiCp纳米复合材料化学制备工艺研究[J].硅酸盐学报,2001,29(6):550-553.
【7】袁晓宁.铁复合铝硅系溶胶制备及其性能基础研究[D].长沙:国防科学技术大学,2006.
【8】张建华,田宗军,赵剑峰,等.纳米SiC激光熔覆陶瓷涂层组织结构分析[J].光电子·激光,2004,15(6):702-705.
【9】Shen L D,Huang Y H,Tian Z J,et al.Laser Sintering of Nano-Al2O3 Powders on Plasma Sprayed Ceramic Based Coatings[C]//Conference Proceedings of MNC2007,[s.l]:[s.n],1339-1344.
【10】沈理达,田宗军,黄因慧,等.激光烧结PSZ纳米陶瓷团聚体粉末的试验研究[J].应用激光,2007,27(5):308-313.
【11】Lima R S,Marple B R.From APS to HVOF spraying of conventional and nanostructured titania feedstock powders:a study on the enhancement of the mechanical properties[J].Surface & Coatings Tech,2006,200:3428-3437.
【12】Lima R S,Marple B R.Enhanced ductility in thermally sparyed titania coating synthesized using a nanostructured feedstock[J].Mater Science & Engineering A,2005,395:269-280.
【13】Chen Huang,Lee Soo Wohn,Du Hao,et al.Influence of feedstock and spraying parameters on the depositing efficiency and microhardness of plasma-sprayed zirconia coatings[J].Materials Letters,2004,58:1241-1245.
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