Preparation of Al2O3 Coating on Tungsten Fibers by a Sol-Gel Method and Its Microstructure Characteristics

被引：0

作者：

Ma Yunzhu ^{[1
]}

Ye Xiaoshan ^{[1
]}

Liu Wensheng ^{[1
]}

Huang Qianfang ^{[1
]}

机构：

[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2014年 / 43卷 / 10期

关键词：

tungsten fiber; sol-gel method; Al2O3; coating; microstructure; BEHAVIOR;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Aluminum oxide coating on the surface of tungsten fibers was prepared by a sol-gel method. The microstructure characteristics of Al2O3 coating with different contents of PVA additive, different drying processes and different calcination temperatures were studied by TG-DSC, XRD, SEM and EDS. The results show that coating agglomerations and cracks can be avoided via the step-by-step drying process. 5 vol% PVA addition enhances the stability of the sol greatly and the uniform and crack-free Al2O3 coating on the surface of tungsten fibers can be achieved. The best calcining temperature is 950 degrees C for the coating. Antioxidation temperature is increased by 120 degrees C and the oxidation mass is reduced by about 9% for Al2O3-coated tungsten fibers compared with tungsten fibers.

引用

页码：2483 / 2488

页数：6

共 18 条

[1] The formation of refractory oxide coatings on Nicalon™ fiber by sol-gel process [J].

Baklanova, NI ;

Zima, TM ;

Naimushina, TM ;

Kosheev, SV .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2004, 24 (10-11) :3139-3148

[2] Interfacial fracture behavior of tungsten wire/tungsten matrix composites with copper-coated interfaces [J].

Du, J. ;

Hoeschen, T. ;

Rasinski, M. ;

You, J. -H. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (06) :1623-1629

[3]

Egger C., 1991, KEY ENG MATER, V61-62, P429

[4]

Gogotsi Yu.G, 1992, CORROSION HIGH PERFO, P151

[5]

Hua Zhong-sheng, 2010, Journal of Northeastern University (Natural Science), V31, P225

[6]

Huha MA, 2000, J AM CERAM SOC, V83, P1957

[7]

Jiansirisomboon Sukanda, 2006, MAT RES B, V41, P791

[8] PREPARATION OF A GAMMA-ALUMINA NANOFILTRATION MEMBRANE [J].

LARBOT, A ;

ALAMIYOUNSSI, S ;

PERSIN, M ;

SARRAZIN, J ;

COT, L .

JOURNAL OF MEMBRANE SCIENCE, 1994, 97 :167-173

[9]

Li K, 2007, ACTA METALL SIN, V43, P1282

[10]

[穆翠红 Mu Cuihong], 2010, [化工进展, Chemical Industry and Engineering Progress], V29, P1521

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