文献类型：期刊文献

英文题名：Synthesis of TiN/Ti3Al composite coatings on Ti6Al4V alloy by plasma spraying and laser nitriding

作者：Zhang, X.C.[1]; Liu, Z.D.[1]; Xu, J.S.[1]; Xuan, F.Z.[1]; Wang, Z.D.[1]; Tu, S.T.[1]

机构：[1] Key Laboratory of Pressurized System and Safety, MOE School of Mechanical Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2013

卷号：228

期号：SUPPL.1

起止页码：S107

外文期刊名：Surface and Coatings Technology

收录：EI(收录号：20132816489454)

语种：英文

外文关键词：Aluminum alloys - Sprayed coatings - Nitrogen - Fracture toughness - Plasma spraying - Titanium alloys - Aluminum coatings - Titanium nitride - Aluminum nitride - Composite coatings - Plasma jets - Tin - Morphology - Nitriding - Nitrogen plasma - Ternary alloys

摘要：The aim of this paper was to develop an in situ method to synthesize the TiN reinforced Ti3Al intermetallic matrix composite (IMC) coatings on Ti6Al4V alloy substrate by using plasma spraying and laser nitriding. The microstructure and mechanical properties of TiN/Ti3Al IMC coatings synthesized at different nitrogen flow rates (NFRs) in laser nitriding were investigated. Results showed that the crack- and pore-free IMC coatings can be made through the proposed method. The morphology of TiN phase and mechanical properties of coatings were strongly dependent on nitrogen NFR in nitriding. The TiN phase exhibited dendrite-like and undeveloped morphology at low nitrogen NFR. At high NFR, the TiN phase showed granular-like morphology. With increasing NFR, the amount of TiN phase in the coating increased, leading to the increment of microhardness and elastic modulus and the decrement of fracture toughness of coating. ? 2012 Elsevier B.V.