学位：博士
职称：教授
所在单位：材料科学与工程学院
长期从事金属材料蠕变、组织演化、损伤及寿命预测工作。主持和参加国家自然科学基金重点和面上项目6项，“863”计划课题2项，省部级及企业项目20余项。获国家发明专利5项，发表学术论文200余篇。出版专著“耐热钢持久性能的统计分析及可靠性预测”1部（科学出版社），译著“高温合金”1部，编著1部。获辽宁省教学名师，宝钢教育奖优秀教师奖。辽宁省教学成果一等奖1项，国家本科一流课程、国家精品在线开放课程负责人。Emerald出版社颁发的学术奖“Literati Club Awards for Excellence”，金属学报2009-2015年度优秀论文奖。省部级科技奖励一等奖、二等奖5项。
Oxidation behavior of a single-crystal Ni-based superalloy over the temperature range of 850 degrees C-950 degrees C in air
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论文类型：期刊论文
发表时间：2019-08-01
发表刊物：APPLIED SURFACE SCIENCE
收录刊物：SCIE、EI
卷号：484
页面范围：209-218
ISSN号：0169-4332
关键字：Ni-based; Kinetics; Stage; Oxide film; Alumina
摘要：The oxidation behavior of a single-crystal Ni-based superalloy over the temperature range of 850 degrees C-950 degrees C and under R-a= 0.1-0.2 mu m was investigated. The oxidation kinetics of the superalloy presented two stages. The first and second stages had activation energies of 222 and 263 KJ.mol(-1), respectively. The oxide film comprised NiO, NiCr2O4, CrTaO4, and Al2O3. The formation time of the continuous Al2O3 layer corresponded to the transition point of oxidation kinetics at each temperature. Mass gain in the first stage could be attributed to the formation of an outer NiO layer and an inner alumina layer, whereas that in the second stage could be ascribed to the growth of intermediate spinel layers.
发表时间：2019-08-01
