1、 表面技术 第 52 卷 第 6 期 276 SURFACE TECHNOLOGY 2023 年 6 月 收稿日期：20220506；修订日期：20220919 Received：2022-05-06；Revised：2022-09-19 基金项目：国家科技重大专项（201700070100）；国家自然科学基金（52071006）Fund：National Science and Technology Major Project(2017-0007-0100);National Natural Science Foundation of China(52071006)作者简介：李梦奇（1998
2、），女，硕士。Biography：LI Meng-qi(1998-),Female,Master.通讯作者：彭徽（1982），男，博士。Corresponding author：PENG Hui(1982-),Male,Doctor.引文格式：李梦奇,彭徽,文娇,等.粉末冶金靶材多弧离子镀 HY3 涂层抗氧化性能J.表面技术,2023,52(6):276-284.LI Meng-qi,PENG Hui,WEN Jiao,et al.Oxidation Resistance of HY3 Coating Deposited by Arc Ion Plating with Powder Metal
3、lurgy TargetJ.Surface Technology,2023,52(6):276-284.粉末冶金靶材多弧离子镀 HY3 涂层抗氧化性能 李梦奇1a，彭徽1a,2，文娇1b，郭洪波1b,2（1.北京航空航天大学 a.前沿科学技术创新研究院 b.材料科学与工程学院，北京 100191；2.高温结构材料与涂层技术工信部重点实验室，北京 100191）摘要：目的目的 研究靶材制备工艺对多弧离子镀（Arc ion plating，AIP）MCrAlY 涂层抗氧化性能的影响。方法方法 采用粉末冶金方法制备 NiCrAlYSi（HY3）靶材，然后采用 AIP 在 DZ125 合金基体上制备
4、HY3 涂层。在 1 100 下对粉末冶金靶材制备涂层进行 200 h 的静态氧化实验，采用 SEM、XRD 等对靶材和氧化前后的涂层进行微观组织分析，并与传统铸造靶材进行对比。结果结果 采用粉末冶金方法制备的靶材成分更加均匀，相尺寸约为 5 m，相较于铸造靶材降低了 1 个数量级。采用粉末冶金靶材制备的涂层（P 涂层）元素分布更均匀、相含量更高。经过 1 100、200 h 的高温氧化，P 涂层的氧化增量为 1.01 mg/cm2，低于铸造靶材制备的涂层（C 涂层，1.10 mg/cm2）。在 200 h 后，P 涂层表面的热生长氧化物（TGO）完整，而 C 涂层表面的 TGO 出现了剥落现
5、象，P 涂层的活性元素均匀分布，促进 TGO 内生成了少量弥散分布的钉扎氧化物Y2Hf2O7，提高了 TGO 的抗剥落能力。更高的 相含量促进了氧化初期 Al2O3的快速生成，有利于 P 涂层生成保护性能更好的 TGO。结论结论 粉末冶金靶材成分的均匀性优于传统铸造靶材，采用粉末冶金靶材制备的HY3 涂层的抗高温氧化性能优于铸造靶材制备的 HY3 涂层。关键词：多弧离子镀；高温防护涂层；MCrAlY；抗氧化性能；微观组织 中图分类号：TG174.4 文献标识码：A 文章编号：1001-3660(2023)06-0276-09 DOI：10.16490/ki.issn.1001-3660.202
6、3.06.024 Oxidation Resistance of HY3 Coating Deposited by Arc Ion Plating with Powder Metallurgy Target LI Meng-qi1a,PENG Hui1a,2,WEN Jiao1b,GUO Hong-bo1b,2(1.a.Research Institute for Frontier Science,b.School of Materials Science and Engineering,Beihang University,Beijing 100191,China;2.Ministry of
7、 Industry and Information Technology Key Laboratory of High-temperature Structural Materials and Coating Technology,Beijing 100191,China)ABSTRACT:MCrAlY coatings are commonly used to protect turbine blades against hot temperature attack.This work aims to investigate the effect of target preparation
8、methods on the oxidation behavior of MCrAlY coatings fabricated by arc ion plating(AIP).NiCrAlYSi(HY3)targets prepared by powder metallurgy(PM)were used as raw material,and HY3 coatings were 腐蚀与防护 第 52 卷 第 6 期 李梦奇，等：粉末冶金靶材多弧离子镀 HY3 涂层抗氧化性能 277 deposited on DZ125 substrates by AIP(denoted as P coatin
9、g).Coating specimens were also deposited with casting target for comparison(denoted as C coating).Vacuum annealing was carried out at 960 for 3 h to promote homogenization of the coatings subsequently.Microstructure of both targets and coatings before and after oxidation were analyzed with scanning
10、electron microscope(SEM)equipped with energy spectrometer(EDS)and X-ray diffractometer(XRD).Isothermal oxidation tests were performed at 1 100 for 200 h.Then oxidation curves were obtained by plotting weight gains of coatings against oxidation time.Thermal grown oxide(TGO)formed after short-term oxi
11、dation(10 min)was analyzed by photo-stimulated luminescence spectra to reveal the possible mechanism.The results showed that the PM targets exhibited much smaller phase size of about 5 m,almost one order of magnitude lower than that of C target.Both coatings in annealed condition were uniform and de
12、nse,with a similar thickness of about 30 m,mainly composed of and phases.However,results analyzed with Image J(an image processing software)indicated that the volume fraction of phase precipitated in the P coating was about 64%,which was significantly higher than the value of about 45%detected in th
13、e C coating.The finer microstructure of the P target resulted in the uniform distribution of Al in the coating,thus was responsible for the higher volume fraction of phase.The mass gain values of P and C coatings after 200 h oxidation were about 1.01 mg/cm2 and 1.10 mg/cm2,respectively.The mass gain
14、 values for the coatings were close to each other,but obvious spallation of TGO could be observed for the C coating.No peeling or spallation of oxides occurred to the P coating.Cross-sectional examination of coatings after 200 h oxidation demonstrated that the thickness of TGO grown on P coating was
15、 about 3.9 m,with a small amount of Y2Hf2O7 dispersion.TGO formed on the C coating was about 4.5 m thick,which was slightly thicker than that of the P coating.Pegs with larger size in the TGO of C coating were determined as HfO2.Similar to the aluminum distribution behavior,homogeneous yttrium in th
16、e P coating resulted in the formation of finely dispersed Y2Hf2O7 pegs in TGO,which improved the scale spallation resistance.As a comparison,larger HfO2 pegs could be observed in the oxidized C coating,as a result of the more severe segregation of yttrium and hafnium.The 10 min short-term oxidation test indicated that the TGO developed on the P coating contained-Al2O3 and a small amount of-Al2O3,which was different from the TGO of C coating with completely transformed-Al2O3.The retarded transfor
