摘要
研究了纯钛颗粒法制备Al-Ti-B中间合金的反应机制,探讨了3种加料方式下熔体反应的热力学机理。试验表明在充分反应的情况下,3种加料方式制备Al-Ti-B中间合金的相结构相同;在先加KBF4的情况下,熔体中将出现AlB2相,不过在有溶解钛的条件下,经充分反应其将会最终转换为TiB2相;混合加料形成第二相(TiAl3,TiB2)最为直接。
The reaction mechanism of Al-Ti-B system prepared with pure Ti particle was investigated, and the ther-mo-dynamics of melt reaction for three kinds of addition ways were approached. The experimental results show that Al-Ti-B master alloys prepared by three kinds of addition ways possess the same phase structure in case of complete reaction. Although the A1B2 phase occurs in the melt a-head of adding KBF4, it is finally converted into TiB2 phase through completely melt reaction with Ti soluted in aluminum melt. The forming of second phase (TiAl3, TiB2) is the fastest in the condition of mixing addition.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2006年第1期12-14,共3页
Special Casting & Nonferrous Alloys
基金
国家863计划资助项目(2003AA33X50)
甘肃省科科技攻关项目(GS0022-A52-059)
作者简介
兰晔峰,男，1962年出生，副教授、兰州理工大学材料科学与工程学院，兰州（730050），电话：0931—2972814，E-mail：yilan@lut．cn.
