Effect of Cr Additives on the Microstructures and Properties of Laser Cladded Ni3Si

摘要：

　　Three compositions,(Ni75Si25)-5Cr,(Ni75Si25)-10Cr and (Ni75Si25)-15Cr,have been cladded onto Ni-based suaperalloy substrate by pre-placing laser cladding process with a 5 kW continuous wave CO2 laser.Ni75Si25 was also cladded with the same method for comparison.The process parameters have been optimized to obtain defect free claddings.The microstructure and the hardness of the cladded layers were characterized by optical microscopy,scanning electron microscopy,X-ray diffraction and microhardness measurement.The corrosion resistance of the cladded layers was measured in a sulfuric acid solution.

关键词： Laser cladding Nickel silicide Intermetallic compound

作者: Yu-feng Zheng Jian-bin Zhang Yao-ning Sun Ding Fan Min Zheng

作者单位: State Key Lab.of Gansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology,Lanzhou State Key Lab.of Gansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology,Lanzhou

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 1319-1321

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）