The location and effects of Si in (Ti1-xSix)Ny thin films

被引:54
作者
Flink, Axel [1 ]
Beckers, Manfred [1 ]
Sjolen, Jacob [2 ]
Larsson, Tommy [2 ]
Braun, Slawomir [3 ]
Karlsson, Lennart [2 ]
Hultman, Lars [1 ]
机构
[1] Linkoping Univ, Dept Phys Chem & Biol IFM, Thin Film Phys Div, SE-58183 Linkoping, Sweden
[2] Seco Tools AB, SE-73782 Fagersta, Sweden
[3] Linkoping Univ, Dept Phys Chem & Biol IFM, Div Surface Phys & Chem, SE-58183 Linkoping, Sweden
基金
瑞典研究理事会;
关键词
SOLID-SOLUTIONS; MICROSTRUCTURE; GROWTH; MORPHOLOGY; MECHANISM; THICKNESS; HARDNESS; DESIGN; ENERGY; LAYERS;
D O I
10.1557/JMR.2009.0299
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
(Ti1-xSix)N-y (0 <= x <= 0.20; 0.99 <= y(x) <= 1.13) thin films deposited by arc evaporation have been investigated by analytical transmission electron microscopy, x-ray diffraction, x-ray photoelectron spectroscopy, and nanoindentation. Films with x <= 0.09 are single-phase cubic (Ti,Si)N solid solutions with a dense columnar microstructure. Films with x > 0.09 haven a featherlike microstructure consisting of cubic TiN:Si nanocrystallite bundles separated by metastable SiNz with coherent-to-semicoherent interfaces and a dislocation density of as much as 10(14) cm(-2) is present. The films exhibit retained composition and hardness between 31 and 42 GPa in annealing experiments to 1000 degrees C due to segregation of SiN, to the grain boundaries. During annealing at 1100-1200 degrees C, this tissue phase thickens and transforms to amorphous SiNz. At the same time, Si and N diffuse out of the films via the grain boundaries and TiN recrystallize.
引用
收藏
页码:2483 / 2498
页数:16
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