Ti-6Al-4V合金的气体氮化及后续氧化

Gas nitriding and subsequent oxidation of Ti-6Al-4V alloys.

作者信息

Lee Dong Bok, Pohrelyuk Iryna, Yaskiv Oleh, Lee Jae Chun

机构信息

Department of Materials Science and Engineering, Myongji University, Yongin, 449-728, South Korea.

出版信息

Nanoscale Res Lett. 2012 Jan 5;7(1):21. doi: 10.1186/1556-276X-7-21.

DOI:10.1186/1556-276X-7-21

PMID:22221679

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3268098/

Abstract

Ti-6Al-4V alloys consisting of α-Ti grains and intergranular β-Ti islands were nitrided at 850°C for 1 to 12 h under a nitrogen pressure of 1 Pa. With increasing nitriding time, the Ti-N compound layer became thicker, and the α-Ti diffusion zone containing dissolved nitrogen became wider. In the Ti-N compound layer, the initially formed Ti2N became TiN as the nitriding progressed. The nitride layers were oxidized to rutile-TiO2 after oxidation at 700°C for 10 h in air.

摘要

由α-Ti晶粒和晶间β-Ti岛组成的Ti-6Al-4V合金在1 Pa氮气压力下于850°C氮化1至12小时。随着氮化时间的增加，Ti-N化合物层变厚，含有溶解氮的α-Ti扩散区变宽。在Ti-N化合物层中，随着氮化过程的进行，最初形成的Ti2N变成了TiN。氮化层在空气中于700°C氧化10小时后被氧化成金红石型TiO2。