Al-Ti-B中间合金的制备研究  

Research on the preparation of Al-Ti-B master alloy

作　　者：李军 吴恩辉 侯静 徐众 李宏 龚昊 Li Jun;Wu Enhui;Hou Jing;Xu Zhong;Li Hong;Gong Hao(College of Vanadium and Titanium,Panzhihua University,Panzhihua 617000,Sichuan,China;Vanadium and Titanium Resources Comprehensive Utilization Key Laboratory of Sichuan Province,Panzhihua 617000,Sichuan,China)

机构地区：[1]攀枝花学院钒钛学院,四川攀枝花617000 [2]钒钛资源综合利用四川省重点实验室,四川攀枝花617000

出　　处：《钢铁钒钛》2023年第3期61-67,共7页Iron Steel Vanadium Titanium

基　　金：四川省科技计划项目(2020YFH0195);工业固态废弃物土木工程综合开发利用四川省高等学校重点实验室项目(FQWLY-2021-Z-08)。

摘　　要：为了使铝材具有更好的组织性能,常用Al-Ti-B中间合金作为晶粒细化剂。以TiO_(2)、B_(2)O_(3)为原料,铝热还原一步合成Al-Ti-B中间合金。研究结果表明,CaO-CaF_(2)为造渣剂,且Al_(2)O_(3)∶CaO∶CaF_(2)=1∶1∶1、焙烧温度1 550℃、焙烧时间30 min、Al/TiO_(2)大于0.9条件下,合金与熔渣分离效果较好,成功制备出Al-Ti-B中间合金,Ti、B收率大于80%。合金中Al和B含量可以根据原料中配铝量和B_(2)O_(3)配入量进行调控,制备的Al-Ti-B中间合金的物相主要由TiAl、Ti_(3)Al、Ti_(2)AlN和TiB_(2)组成,随着配铝量和B_(2)O_(3)配入量的增加,合金中Ti_(3)Al和Ti_(2)AlN相消失,物相由TiAl和TiB_(2)构成。Al-Ti-B master alloy is commonly used as grain refining agent to endow aluminum with better organizational properties.In this paper,TiO_(2) and B_(2)O_(3) are used as raw materials for the one-step synthesis of Al-Ti-B master alloy by aluminum thermal reduction.The results show that Al-Ti-B master alloy was successfully prepared under the conditions of Al_(2)O_(3)∶CaO∶CaF_(2)=1∶1∶1,roasting temperature 1 550 ℃,roasting time 30 min and Al/TiO_(2)0.9.The yield of Ti and B is higher than 80%.The Al and B contents of the alloy can be adjusted according to the amount of Al and B_(2)O_(3) in the raw material.The phase of the alloy changes to TiAl and TiB_(2) with the increase of the amount of Al and B_(2)O_(3).

关 键 词：AL-TI-B中间合金 铝热还原 二氧化钛 三氧化二硼 物相组成 

分 类 号：TF823[冶金工程—有色金属冶金] TG146.21[一般工业技术—材料科学与工程]