摘要
研究了Ti-5Al-2Mo-3Zr合金和ZrO_2增韧陶瓷间结合界面的化学成分分布和组织结构变化。在1500℃和1600℃烧结成的界面中,可明显地分为4个过渡层,大致含Zr量(不计氧含量)分别为:15%,30%,40%,70%。相应的显微组织为:固溶体+第二相、两相组织、包晶共晶组织、多元伪共晶组织。主要的相有:ZrO_2,TiO_2,ZrTiO_4,Al_2TiO_5,MgTi_2O_5等。在钛合金熔点以上的1700℃烧成的界面中,只有两个过渡层:魏氏组织层和亚共晶层。
The chemical composition and microstructure distribution in the interface between Ti5Al2Mo3Zr alloy and Mg-PSZ ceramic are investigated in this paper. In the interfaces sintered at 1500℃ and 1600℃, there are four transition layers with Zr content cexclusive of Oxygen: 15%, 30%, 40% and 70%. The corresponding microstructures are: solid solution+second phase, two phase mixture, peritectic and eutectic structures, and pseudo-eutectic structure with multiple-components. The main phases are: ZrO_2, TiO_2, ZrTiO_4, Al_2TiO_5, MgTi_2O_5. The interface sintered at 1700℃, which is higher than the melting temperature of the titanium alloy, only has two transition layers: Widmansttaten structure and hypoeutectic structure.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
1992年第5期7-14,共8页
Rare Metal Materials and Engineering
关键词
钛合金
增韧陶瓷
界面
过渡层
Titanium alloy Toughened ceramins Bonding interfeca Transition layers
