检索结果-南通市图书馆

HOT CORROSION PERFORMANCE OF AMORPHOUS Al_2O_3 COATING

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 1993年第3期3卷 52-55页

作者： Zhu, Shenglong Wang, Fuhui lou, hanyi Wu, Weitao Institute of Corrosion and Protection of Metals, Academia Sinica, Shenyang 110015, China

The amorphous Al2O3 coatings were prepared on superalloy GH30 by dc reactive sputtering. Hot corrosion behaviors of the coated and uncoated specimens were studied in 75％Na2SO4+25％K2SO4 melt at I 123 K by either immersing the samples half in sulphate or applying sulphate deposit. The Al2O3 coatings reduced the hot corrosion rates by about one magnitude, and the internal sulphidation was not observed in the Al2O3 coated specimens.

关键词： Al2O3 coating hot corrosion reactive sputtering

INFLUENCE OF DEFECTS ON PROPERTIES OF SPUTTERED CoCrAIY COATINGS

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 1993年第8期6卷 141-146页

作者： WANG Fuhui lou hanyi WU Weitao Corrosion Science Laboratory,Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang,China research assistant,Institute of Corrosion and Protection of Metats,Academia Sinica,Shenyang 110015,China

The influence of defects on the oxidation, hot corrosion and thermal shock properties of sputtered Co-30Cr-6Al-0.5Y coatings was *** results indicated that the nodular defects reduced the properties of the *** the oxidation,the nodular defects resulted in the severe internal oxidation of aluminium,as a result,the pure alu mina scale could not form at very high temperature such as at 1 100℃.For the hot corrosion,the nodular defects served as the short-path for the diffusion of sulfur into the coating and the substrate,and caused the sulfidation,of the ***,the nodular defects became the crack source during the thermal shock test and decreased the thermal shock resistance.

关键词： CoCrAlY coating defect oxidation hot corrosion thermal shock

STRUCTURE OF SPUTTERED Co-Cr-Al-Y COATING

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 1990年第9期3卷 161-165页

作者： lou hanyi WANGFuhui JI Lirun ZHANG Lixin Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang,China lou hanyi Associate Professor,Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang 110015,China

The phase composition of Co-30Cr-6Al-0.5Y coating deposited by planar magnetron sputtering as well as the effect of sputtering parameters on it have been *** sputtered coating is composed of hep ε-phase of fcc α-phase of Co solid solution with a mi- nority of β-CoAl intermetallic *** hcp ε-Co phase and the fcc χ-Co phase assumed a and preferred orientation *** the phase type and orientation extent depend on the sputtering *** the substrate surface is parallel to the target face during sputtering,the coating will be of fine crystallite with compact structure and smooth surface;if it is rotated,the coating will be to the contrary.

关键词： magnetron sputtering CoCrAlY coating

在线全文

学校读者我要写书评

暂无评论

Ti对溅射纳米晶涂层高温氧化的影响

稀有金属材料与工程 2000年第1期29卷 39-42页

作者：陈国锋楼翰一中国科学院金属腐蚀与防护研究所沈阳110015

对Ni97Cr55Al7Ti溅射纳米晶涂层进行了空气中高温氧化实验,观察并分析了Ti的作用及影响。研究结果表明:由于涂层中相对较高的Ti含量,1000℃氧化200h后生成了由αAl2O3和TiO2组成的复杂氧化膜。TiO2的存在并没有降低涂层的抗高温氧化性能... 详细信息

对Ni97Cr55Al7Ti溅射纳米晶涂层进行了空气中高温氧化实验,观察并分析了Ti的作用及影响。研究结果表明:由于涂层中相对较高的Ti含量,1000℃氧化200h后生成了由αAl2O3和TiO2组成的复杂氧化膜。TiO2的存在并没有降低涂层的抗高温氧化性能,而且生成的氧化膜与涂层基体有着很好的粘附性。这主要在于氧化初期生成的TiO2在随后氧化过程中没有发生长大,从而保证了保护性氧化膜的完整性。

关键词：高温氧化溅射纳米晶涂层钛高温合金镍基

溅射Ni-Cr-Al-Ti涂层高温氧化过程中组织变化对生成TiO_2的影响

在线全文

学校读者我要写书评

暂无评论

稀有金属材料与工程 2000年第3期29卷 158-160页

作者：陈国锋楼翰一中国科学院金属腐蚀与防护研究所沈阳110015

观察了溅射 Ni- 9.7Cr- 5 .5 Al- 7Ti(质量分数 )纳米晶涂层在高温氧化过程中的组织变化 ,探讨了溅射涂层表面氧化膜以及涂层预氧化 90 min后磨去生成的氧化膜再重新氧化生成氧化膜中 Ti O2 的生长 ,认为溅射涂层氧化过程中 Ni3(Al Ti)... 详细信息

观察了溅射 Ni- 9.7Cr- 5 .5 Al- 7Ti(质量分数 )纳米晶涂层在高温氧化过程中的组织变化 ,探讨了溅射涂层表面氧化膜以及涂层预氧化 90 min后磨去生成的氧化膜再重新氧化生成氧化膜中 Ti O2 的生长 ,认为溅射涂层氧化过程中 Ni3(Al Ti)相的析出与 Ti O2 的生成长大有着密切关系 ,对两种不同情况下 Ni3(Al Ti)相对 Ti O2 生长的影响机制进行了分析。

关键词： Ni-Cr-Al-Ti 高温氧化溅射纳米晶涂层二氧化

Morphology and Microstructure of Sputtered Superalloy Coating

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 1993年第2期9卷 116-120页

作者： Bangjie XIA+ hanyi lou Lixin ZHANG, Corrosion Science Laboratory, Institute of Corrosion and Protection of Metals, Academia Sinica, Shenyang, 110015, China

The morphology and microstructure of magnetron sputtered coating of superalloy K38G on cast al- loy K38G have been investigated by means of SEM, TEM and XRD. The results indicate that the sputtered coating is identical to the substrate in chemical composition but it is composed only of γ phase without γ'. The sputtered superalloy coating presents columnar structure and the grain size is in the range of 20-100 nm. There are a great number of planar defects such as stacking faults and microtwins in the coating. The morphology and microstructure of the sputtered coating may have close relation to the remarkable increase of oxidation resistance of the coating.

关键词： sputtering superalloy coating

溅射Ni-8Cr-3.5Al纳米晶涂层的抗高温氧化行为

在线全文

学校读者我要写书评

暂无评论

金属学报 2000年第1期36卷 59-61页

作者：陈国锋楼翰一中国科学院金属腐蚀与防护研究所金属腐蚀与防护国家重点实验室沈阳110015

对Ｎｉ－８Ｃｒ－３．５Ａｌ（质量分数，％）合金及其纳米晶涂层进行了１０００℃空气中高温氧化研究结果表明：Ｎｉ－８Ｃｒ－３．５Ａｌ纳米晶涂层的抗高温氧化性能优于Ｎｉ－８Ｃｒ—３．５Ａｌ合金．这主要在于Ｎｉ－－８Ｃｒ—... 详细信息

对Ｎｉ－８Ｃｒ－３．５Ａｌ（质量分数，％）合金及其纳米晶涂层进行了１０００℃空气中高温氧化研究结果表明：Ｎｉ－８Ｃｒ－３．５Ａｌ纳米晶涂层的抗高温氧化性能优于Ｎｉ－８Ｃｒ—３．５Ａｌ合金．这主要在于Ｎｉ－－８Ｃｒ—３．５Ａｌ纳米晶涂层表面生成了具有分层结构含一连续ａ－Ａｌ２Ｏ３内层的氧化膜、而Ｎｉ－８Ｃｒ—３．５Ａｌ合金则生成了由Ｃｒ２Ｏ３外层和Ａｌ２Ｏ３内氧化物组成的氧化膜．

关键词：溅射纳米晶涂层高温氧化镍基高温合金

LOCALIZED CORROSION OF MICROCRYSTALS OF 1Crl8Ni9Ti STAINLESS STEEL

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 1989年第8期2卷 143-145页

作者： LIU Dacheng CAO Chunan WANG Fuhui lou hanyi ZHANG Lixin

The resistances against localized corrosion of 1Cr18Ni9Ti microcrystals with normal grain size and bcc structure obtained hy magnetron sputtering have been *** two kinds of microcrystals with (110) and (211) textures respectively were obtained under different sputtering *** microcrystals were found to have better resistance against local- ized corrosion than the crystal with normal *** microcrystal with (110) preferred orientation has larger resistance to localized corrosion than that with (211) preferred orientation.

关键词： microcrystal localized corrosion magnetron sputtering

EFFECT OF CoCrAl COATING ON OXIDATION RESISTANCE OF INTERMETALLIC COMPOUND TiA1

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 1993年第11期6卷 331-336页

作者： WANG Fuhui lou hanyi WU Weitao Corrosion Science Laboratory,Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang,China associate professor,Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang 110015,China

Effect of a sputtered Co-30Cr-5Al microcrystalline coating on oxidation resistance of intermetallic compound TiAl and oxidation behavior of the bare TiAl were investigated at 900—1000℃ in static *** oxidation kinetics for the TiAl alloy seems to approximately follow a linear rate *** oxidation resistance of TiAl is due to the formation of the mixed Al_2O_3+TiO_2 scale which is loosely packed and easily spalled *** not of dense and adherent pure Al_2O_3.A sputtered Co-30Cr-5Al coating,30 μm thickness,can remarkably improve the oxidation resistance of TiAl owing to the formation of adherent Al_2O_3 protective ***,many Kirkendall voids were formed between coating and substrate.

关键词： CoCrAl microcrystalline coating TiAL oxidation void