학술논문
Effect Of Surface Aluminizing On Long-Term High-Temperature Thermal Stability Of Tc4 Titanium Alloy
Document Type
redif-article
Author
Source
World Scientific Publishing Co. Pte. Ltd., Surface Review and Letters (SRL). 23(02):1-7
Subject
Language
English
Abstract
Aluminum (Al)–rich titanium (Ti)–Al alloyed coating was fabricated on the surface of TC4 Ti alloy to improve the high-temperature stability of TC4 Ti alloy by means of arc-added glow discharge plasma technology. Microstructure, room-temperature properties and long-term high-temperature oxidation behavior of the alloyed sample were investigated. The results show that a uniform and compact Ti–Al alloyed coating with about 30μm thickness formed on the surface of TC4 Ti alloy. Microhardness and room-temperature wear resistance of the alloyed sample improved significantly. Long-term oxidation behaviors of the samples in air at 800∘C for 1000h show that the mass gain of the alloyed sample was 0.3686mg/cm2, while that of the substrate was 18.2095mg/cm2. Arc-added glow discharge plasma aluminizing improved high-temperature oxidation resistance of TC4 Ti alloy significantly.