Tribological and corrosion behavior of vacuum plasma sprayed Ti-Zr-Ni quasicrystalline coatings

被引：5
|
作者：
Siegmann, Stephan [1 ]
Kern, Philippe [1 ]
Rohr, Lukas [1 ]
Bandyopadhyay, Partha A. [2 ]
机构：
[1] EMPA, Thun, Switzerland
[2] Indian Inst Technol, Kharagpur, W Bengal, India
来源：
JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2007年 / 16卷 / 5-6期
关键词：
quasicrystalline (QC) coatings; Ti-Zr-Ni; vacuum plasma spraying; wear and corrosion;
D O I：
10.1007/s11666-007-9117-5
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This investigation deals with a study of the friction, wear, and corrosion behavior of vacuum plasma sprayed quasicrystalline (QC) Ti(41.5)Zr(41.5)Ni(17) coatings. During pin on disc experiments, a change in the mode of wear has been found to occur with corresponding changes in normal load and sliding velocity. The low thermal conductivity of quasicrystals and its brittleness play a vital role in determining the friction and wear behavior of such materials. When these coatings are subjected to rubbing for a longer period of time, wear occurs by subsurface crack propagation, and subsequent delamination within the coated layer. By comparing the QC to its polycrystalline counterpart during potentiodynamic measurements according to ASTM G 31, higher currents were found over the whole range of potentials for QC when immersed in 1 M HCl solution.
引用
收藏
页码：947 / 953
页数：7
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