Diode Laser Assisted Surface Nitriding of Ti-6Al-4V: Properties of the Nitrided Surface

被引：22
|
作者：
Biswas, Amit [1 ]
Li, Lin [2 ]
Chatterjee, U. K. [1 ]
Manna, I. [1 ]
Majumdar, Jyotsna Dutta [1 ]
机构：
[1] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India
[2] Univ Manchester, Sch Mech Aerosp & Civil Engn, Manchester M60 1QD, Lancs, England
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2009年 / 40A卷 / 12期
关键词：
COATED TI-6AL-4V; TITANIUM; DIFFERENTIATION; FIBRONECTIN;
D O I：
10.1007/s11661-009-0021-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present study, a detailed investigation of mechanical and electrochemical properties of laser-surface-nitrided Ti-6Al-4V has been carried out. Laser treatment is carried out by melting the surface of Ti-6Al-4V substrate using a high power CW diode laser with nitrogen as shrouding environment. The effect of laser parameters (applied power and gas flow rate) on the properties of the nitrided surface was evaluated. The microhardness of the nitrided surface was improved to a maximum of 1175 VHN in the present set of laser processing conditions as compared to 280 VHN of as-received substrate. Surface nitriding increased the potential for pit formation (E-pit) significantly as compared to as-received Ti-6Al-4V. Immersion in Hank's solution showed calcium phosphate deposition from the solution. The optimum process parameters for laser surface nitriding were derived.
引用
收藏
页码：3031 / 3037
页数：7
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