NaCl辅助低温燃烧合成法制备Al2O3/Cu复合粉末的研究  

Preparation of Al2O3/Cu Composite Powders by NaCl-Assisted Low-Temperature Combustion Synthesis

作　　者：储爱民[1,2] 郭自强 赵玉萍 张华健[2] 陶俊臣 郭世柏 CHU Ai⁃min;GUO Zi⁃qiang;ZHAO Yu⁃ping;ZHANG Hua⁃jian;TAO Jun⁃chen;GUO Shi⁃bo(Hunan Provincial Key Defense Laboratory of High Temperature Wear⁃resisting Materials and Preparation Technology,Hunan University of Science and Technology,Xiangtan 411201,Hunan,China;School of Materials Science and Engineering,Hunan University of Science and Technology,Xiangtan 411201,Hunan,China;School of Civil and Engineering,Hunan University of Science and Technology,Xiangtan 411201,Hunan,China)

机构地区：[1]湖南科技大学高温耐磨材料及制备技术湖南省国防技术重点实验室,湖南湘潭411201 [2]湖南科技大学材料科学与工程学院,湖南湘潭411201 [3]湖南科技大学土木工程学院,湖南湘潭411201

出　　处：《矿冶工程》2019年第6期133-137,共5页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(51675176);湖南省教育厅科学研究重点项目(18A196);湖南科技大学SRIP项目(SYZ2019065)

摘　　要：以硝酸铜、硝酸铝、氯化钠和尿素为原料,结合NaCl辅助低温燃烧合成法和氢还原法制备了Al2O3/Cu复合粉末,研究了NaCl掺入量对复合粉末的影响。结果表明,NaCl与Cu(NO3)2的摩尔比为1.5∶1时,前驱物的比表面积达到了最大值,为41.3 m2/g;前驱物氢还原后得到的Al2O3/Cu复合粉末颗粒尺寸为2μm左右,比表面积为15.6 m2/g;对复合粉末采用SPS烧结,烧结块体中Al2O3粒子和Cu基体之间的结合性较好。Al2O3/Cu composite powders were prepared by utilizing a combination of NaCl-assisted low-temperature combustion synthesis and hydrogen reduction,with Al(NO3)3,Cu(NO3)2,NaCl and CO(NH2)2 as raw materials.Effect of NaCl content on composite powders was also studied.In the test,NaCl and Cu(NO3)2 was at the molar ratio of 1.5∶1;the precursor had a specific surface area at the maximum value of 41.3 m2/g.Al2O3/Cu composite powders obtained after hydrogen reduction of the precursor were 2μm in particle size and had the specific surface area of 15.6 m2/g.It is shown that after spark plasma sintering for the composite powders,Al2O3 particles have excellent bond with Cu matrix in the sintered bulk.

关 键 词：Al2O3/Cu复合粉末 氢还原 前驱物 低温燃烧合成法 氯化钠 

分 类 号：TB321[一般工业技术—材料科学与工程]