Fabrication and Properties of Plasma-Sprayed Al2O3/ZrO2 Composite Coatings

被引：39

作者：

Dejang, N. ^{[1
]}

Limpichaipanit, A. ^{[1
]}

Watcharapasorn, A. ^{[1
]}

Wirojanupatump, S. ^{[2
]}

Niranatlumpong, P. ^{[3
]}

Jiansirisomboon, S. ^{[1
]}

机构：

[1] Chiang Mai Univ, Fac Sci, Dept Phys & Mat Sci, Chiang Mai 50200, Thailand

[2] Chiang Mai Univ, Fac Sci, Dept Chem, Chiang Mai 50200, Thailand

[3] Natl Sci & Tech Dev Agcy, Natl Met & Mat Technol Ctr, Pathum Thani 12121, Thailand

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2011年 / 20卷 / 06期

关键词：

Al2O3/ZrO2; coating; mechanical properties; nanocomposite; plasma spray; wear behavior; TRIBOLOGICAL BEHAVIOR; TOUGHENING MECHANISMS; FRACTURE-BEHAVIOR; WEAR-RESISTANCE; MICROSTRUCTURE; ALUMINA; TRANSFORMATION;

D O I：

10.1007/s11666-011-9672-7

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Al2O3 /xZrO(2) (where x = 0, 3, 13, and 20 wt.%) composite coatings were deposited onto mild steel substrates by atmospheric plasma spraying of mixed alpha-Al2O3 and nano-sized monoclinic-ZrO2 powders. Microstructural investigation showed that the coatings comprised well-separated Al2O3 and ZrO2 lamellae, pores, and partially molten particles. The coating comprised mainly of metastable gamma-Al2O3 and tetragonal-ZrO2 with trace of original alpha-Al2O3 and monoclinic-ZrO2 phases. The effect of ZrO2 addition on the properties of coatings were investigated in terms of microhardness, fracture toughness, and wear behavior. It was found that ZrO2 improved the fracture toughness, reduced friction coefficient, and wear rate of the coatings.

引用

页码：1259 / 1268

页数：10

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