摘要
在高铌TiAl基金属间化合物的基础上添加W,B,Y合金元素,熔炼了5种合金,研究了这5种合金在900℃静止空气中的断续氧化行为。1000h氧化后的结果表明:含0.1%(原子分数,下同)的Y使合金的抗氧化性有所提高,促进合金形成了以Al2O3为主的连续致密氧化层;在高铌含Y合金中添加W,B2种合金元素则导致基体发生了严重的内氧化,使合金的抗氧化性能降低。
Five kinds of alloys were melt by adding W, B, and Y elements into the TiAl-based intermetallic compound with high Nb concent. The desultory oxidation behaviors were studied at 900℃ in static air for the five alloys. The results of oxidation for 1000 hours show that the addition of 0.1at% Y enhances the oxidation resistance of the alloy greatly and promotes the formation of continuous and compact Al2O3 oxide scale. The addition of W and B into the high-Nb alloy results in the serious internal oxidation of alloy, impairing the oxidation resistance of TiAl.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2007年第5期884-887,共4页
Rare Metal Materials and Engineering
关键词
TIAL
高温氧化
抗氧化性
氧化层
TiAl intermetallic compound
high temperature oxidation
oxidation resistance
oxide scale
