The influence of Si concentrations on the oxidation resistance of Mo-Si-B-(N) coatings

被引:16
作者
Kiryukhantsev-Korneev, Ph. V. [1 ]
Andreev, S. O. [1 ]
Shvyndina, N. V. [1 ]
Levashov, E. A. [1 ]
Timofeev, A. N. [2 ]
Shtansky, D. V. [1 ]
机构
[1] Natl Univ Sci & Technol MISiS, Moscow 119049, Russia
[2] OAO Kompozit, Korolev 141070, Moscow Oblast, Russia
关键词
Mo-Si-B and Mo-Si-B-N coatings; oxidation resistance; magnetron sputtering; SHS targets; TEM; SEM-EDS; GDOES; CR-B-N; THERMAL-STABILITY; NANOCOMPOSITE COATINGS; NITROGEN PRESSURE; BIAS VOLTAGE; FILMS; BEHAVIOR;
D O I
10.3103/S106782121406011X
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The influence of the silicon concentration on the oxidation resistance of Mo-Si-B-N coatings prepared by magnetron sputtering is investigated. The Si content in them was controlled by the composite-target composition, as well as by various areas of silicon segments placed into the target-erosion zone. The composition and structure of coatings after deposition and annealing in air at temperatures of 500-1300A degrees C are investigated using transmission and scanning electron microscopy, energy-dispersive analysis, and glow-discharge optical emission spectroscopy. It is established that oxidation resistance increases as the Si concentration in coatings increases, which is caused by the formation of a silicon oxide-based dense layer; this layer prevents oxygen propagation into the coating depth upon heating. The maximal oxidation resistance at a level of 1300A degrees C is attained in Mo-Si-B-N coatings containing 40 at % Si.
引用
收藏
页码:645 / 651
页数:7
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