高能球磨对Al-Ti-B体系合成TiB_(2)颗粒的影响  

Effect of High-energy Ball Milling on the Synthesis of TiB_(2) Particles in Al-Ti-B Reaction System

作　　者：杨海瑞 熊艳梅 侯良云 张静 庄伟彬[2] YANG Hai-rui;XIONG Yan-meil;HOU Liang-yun;ZHANG Jing;ZHUANG Wei-bin(Avic Chengdu CAIC Electronics Co.,Ltd.,Chengdu Sichuan 610091,China;College of Materials Science and Engine ering,Liaoning Technical University,Fuxin Liaoning 123000,China)

机构地区：[1]航空工业成都凯天电子股份有限公司,四川成都610091 [2]辽宁工程技术大学材料科学与工程学院,辽宁阜新123000

出　　处：《铸造设备与工艺》2022年第4期25-29,共5页Foundry Equipment & Technology

基　　金：辽宁省教育厅基础研究项目(LJ2019JL008)。

摘　　要：为了合成粒度均匀的微米级Ti B_(2)颗粒,以Al-Ti-B为体系,结合反应体系的热力学计算和差示扫描量热分析(DSC),研究了高能球磨对合成Ti B_(2)颗粒微观形貌的影响,揭示了Ti B_(2)颗粒的合成机理。结果表明:AlTi-B体系在527℃~927℃(800 K~1200 K)温度范围内生成Ti B_(2)反应的ΔGT最低,在Al-Ti-B体系完全反应后只有Ti B_(2)存在。与球磨5 h和15 h相比,球磨10 h时,混合物中聚集体尺寸最小,均在1μm以下,Al-Ti-B体系完全反应的温度最低,为845℃(1118 K),且此温度下,合成Ti B_(2)颗粒形状规则,表面洁净,尺寸为0.5μm^(2)μm.In order to synthesize micro Ti Bparticles with uniform particle size,the effect of high-energy ball milling on the micro morphology of synthetic Ti Bparticles was studied in Al-Ti-B_(2)reaction system,combined with thermodynamic calculation of reaction system and differential scanning calorimetry(DSC),and the synthesis mechanism of Ti Bparticles was revealed.The results show that in the temperature range of 527℃~927℃(800 K~1200 K),the of the reaction of forming Ti Bparticles in Al-Ti-B_(2)system is the lowest,and only Ti Bexists after the complete reaction of Al-Ti-B_(2)system.Compared with ball milling for 5h and 15 h,when ball milling for 10 h,the aggregate size in the mixture is the smallest,all below 1μm,and the temperature of complete reaction of Al-Ti-B_(2)system is the lowest,which is 845℃(1118 K).At this temperature,the shape of synthetic Ti Bparticles is regular,the surface is clean,and the size is 0.5μm^(2)μm.

关 键 词：高能球磨 Al-Ti-B体系 球磨时间 DSC Ti B_(2)颗粒 微观形貌 

分 类 号：TB32[一般工业技术—材料科学与工程]