期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 726, 期 -, 页码 403-409出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.07.270
关键词
Barium zirconate; Titanium alloys; Dissolution; Yttria additive; (Stability)
资金
- National Basic Research Program of China (973 Program) [2014CB643403]
- National Nature Science Foundation of China [51374142]
- Science and Technology Fund of Scientific Committee of Shanghai [17DZ2283500]
Two kinds of refractory (BaZrO3 and Y2O3 (Y)-doped BaZrO3) were prepared to melt two titanium alloys (TiNi and Ti2Ni), respectively. The influence of Y2O3 on the phase constitution and microstructure of BaZrO3, as well as the interaction between the refractory and the titanium alloys, were investigated using the XRD and SEM. The results revealed that the Y-doped BaZr03 consisted of BaZr(1-x)Y(x)O(3 )and Ba2YZrO6-d, no erosion phenomenon was observed for two kinds of refractory after melting TiNi alloys, however, a 275 pm thick reaction layer of BaZrO3 crucible was observed after melting Ti2Ni alloy, whereas, there existed only a 45 pm erosion layer for the Y-doped BaZrO3 crucible. The dissolution of BaZrO3 in the titanium melts was the main reason of the alloy-crucible interaction, and the dissolution equation was determined: TixNi(I) + x/2BaZrO(3)(s) -> TixNi[x/2Zr, xo](l) + x/2BaO(l), doping Y2O3 into BaZrO3 could reduce the dissolution amount of refractory in the titanium melts by improving its thermodynamic stability. This fact may imply that the Y-doped BaZrO3 was more suitable for induction melting of the titanium alloys. (C) 2017 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据