航空材料学报2026，Vol.46Issue(3)：68-76,9.DOI:10.11868/j.issn.1005-5053.2024.000190
型壳面层材料与DZ125定向凝固高温合金的润湿性及界面反应
Wettability and interfacial reactions of shell surface layer materials with DZ125 directional solidification superalloy
张洪雪 1陈晓燕 2马月姣 3王石磊 1王延辉 1谭亚 4李飞2
作者信息
- 1. 中国航发沈阳黎明航空发动机有限责任公司 精密铸造厂,沈阳 110041
- 2. 上海交通大学 材料科学与工程学院 上海市先进高温材料及其精密成型重点实验室,上海 200240
- 3. 中国科学院金属研究所 师昌绪先进材料创新中心,沈阳 110016
- 4. 中国航发南方工业有限公司,湖南 株洲 412002
- 折叠
摘要
Abstract
The high-temperature chemical stability and wettability of EC95 powder surface layer,corundum powder surface layer,and zirconium powder surface layer of ceramic shell to DZ125 directional solidification superalloy are comparatively studied by the sessile-drop experiment.The morphology of ceramic surfaces as well as the morphologies and compositions of the interfacial reaction zones between the ceramics and the alloy melt are observed and analysed.The contact angles between the alloy melt and the ceramics are calculated,and the influence of interfacial reactions and wettability on the mechanical penetration defect of the casting surface are discussed.The results show that the surface roughness values of EC95 powder surface layer,corundum powder surface layer,and zirconia powder surface layer ceramics are 3.987,3.391 μm,and 2.085 μm,respectively.The interfacial reaction products between the alloy and the three types of ceramics are mainly composed of Hf oxides,accompanied by a small amount of alloying components.For the corundum powder surface layer ceramics,the alloy surface is almost completely covered by a layer of Hf oxide after the experiment.This oxide layer effectively inhibits the further interfacial reaction between the alloy and the ceramic surface layer,making it more suitable for the investment casting of DZ125 superalloy.The contact angles between DZ125 superalloy and EC95 powder surface layer,corundum powder surface layer,and zirconia powder surface layer are 84.95°,75.71°,and 132.96°,respectively.Due to the influence of interface reactions and ceramic surface roughness,the wettability between corundum surface layer shell and DZ125 alloy is better than other surface layers.关键词
熔模铸造/DZ125定向凝固高温合金/EC95粉面层/刚玉粉面层/锆英粉面层/界面反应/润湿性Key words
investment casting/DZ125 directional solidification superalloy/EC95 powder surface layer/alumina powder surface layer/zircon powder surface layer/interfacial reaction/wettability分类
矿业与冶金引用本文复制引用
张洪雪,陈晓燕,马月姣,王石磊,王延辉,谭亚,李飞..型壳面层材料与DZ125定向凝固高温合金的润湿性及界面反应[J].航空材料学报,2026,46(3):68-76,9.
