Detonation Spraying of Ti-Al Intermetallics: Phase and Microstructure Development of the Coatings

被引：15

作者：

Dudina, Dina V. ^{[1
,2
]}

Batraev, Igor S. ^{[3
]}

Ulianitsky, Vladimir Yu ^{[3
]}

Bulina, Natalia V. ^{[1
]}

Korchagin, Michail A. ^{[1
]}

Lomovsky, Oleg I. ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Branch, Inst Solid State Chem & Mechanochem, Novosibirsk 630128, Russia

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

[3] Russian Acad Sci, Siberian Branch, Lavrentiev Inst Hydrodynam, Novosibirsk 630128, Russia

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2015年 / 30卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

Aluminum; Characterization; Chemistry; Coatings; Hardness; Microstructure; Spray; Titanium Transformation; X-ray; TITANIUM; ALUMINIDES; NITRIDE; POWDER; TI3AL;

D O I：

10.1080/10426914.2014.984221

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The goal of this work was to study the phase and microstructure changes involved in the process of coating formation by detonation spraying of Ti3Al. TiAl, and TiAl3 intermetallics. The O-2/C2H2 ratio was varied between 1.1 and 2.0. and the explosive charge was 30-40% of the barrel volume. In most experiments air was used as a carrier gas, selected experiments were performed with argon. We found that depending on the spraying parameters. TiAl3 essentially retains in the coatings or partially decomposes forming TiAl and Ti3Al as minor phases. Detonation sprayed Ti3Al reacts with nitrogen and oxygen partially transforming into titanium nitrides TiN/Ti2N and titanium oxynitrides TiNxOy. TiAl partially decomposes forming Ti3Al. which further reacts with oxygen and nitrogen as the particle temperature and the content of oxygen in the explosive mixture increase. The in situ formed titanium nitrides and oxynitrides show a reinforcing effect increasing the hardness of the coatings.

引用

页码：724 / 729

页数：6

共 13 条

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