Detonation spraying of titanium and formation of coatings with spraying atmosphere-dependent phase composition

被引：26

作者：

Ulianitsky, Vladimir Yu. ^{[1
]}

Dudina, Dina V. ^{[2
]}

Batraev, Igor S. ^{[1
]}

Kovalenko, Alexander I. ^{[1
]}

Bulina, Natalia V. ^{[2
]}

Bokhonov, Boris B. ^{[2
]}

机构：

[1] Lavrentiev Inst Hydrodynam SB RAS, Novosibirsk 630090, Russia

[2] Inst Solid State Chem & Mechanochem SB RAS, Novosibirsk 630128, Russia

来源：

SURFACE & COATINGS TECHNOLOGY | 2015年 / 261卷

关键词：

Detonation spraying; Coating; Microstructure; Titanium nitrides; Titanium carbonitrides; COMBUSTION; NITRIDE; TI;

D O I：

10.1016/j.surfcoat.2014.11.038

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The phase development in the coatings formed by detonation spraying of titanium in a wide range of compositions of the spraying atmosphere is reported. The phase composition of the coatings was found to be very sensitive to the O-2/C2H2 ratio and the nature of the powder carrier gas. Using O-2/C2H2 = 1.1 and air as a carrier gas, titanium oxynitride-containing coatings were obtained, while at O-2/C2H2 = 2.5, titanium oxides were the reaction products. In highly reducing conditions at O-2/C2H2 = 0.7 and with the use of nitrogen as a carrier gas, titanium carbide and carbonitride formed. Higher contents of nitrides in the coatings were found when nitrogen was added into the O-2 + C2H2 mixture. Metal-ceramic coatings formed at high transformation degrees of titanium were either composed of metallic titanium-rich particulate agglomerates distributed in a ceramic-rich matrix or contained alternating layers rich in metallic titanium and rich in ceramic compounds. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：174 / 180

页数：7

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