Niobium Carbide Based Cermets with Secondary Carbide and Carbonitride Addition
In this study,the influence of Ni binder content(5 to 20 vol%)and carbide/carbonitride additions(up to 43.5 vol%)on the microstructure and mechanical properties of NbC-Ni matrix cermets were investigated.NbC cermets with Mo2C,WC or combinations of Mo2C,WC and Ti(C0.7N0.3)were prepared by conventional liquid phase sintering in vacuum at 1420℃.Analysis results indicated that the partial replacement of NbC by the additions had a significant effect on the NbC grain growth,Vickers hardness as well as flexural strength of the fully densified NbC-Ni based cermets.The Ti(C0.7N0.3)-free NbC cermets were composed of more homogeneous cubic NbC or(Nb,Me)C solid solution carbides,whereas clear core-rim structured NbC grains were observed in cermets with Ti(C0.7N0.3)addition.The microstructure and mechanical properties,i.e.hardness,fracture toughness and flexural strength of both NbC-based material classes were evaluated.
Cermet Niobium carbide Carbonitride Sintering Mechanical properties
Huang Shuigen Vleugels Jozef Cannizza Eduardo Woydt Mathias Liu Zhongzhu Mohrbacher Hardy
Department of Materials Engineering(MTM),KU Leuven,Kasteelpark Arenberg 44,B-3001 Heverlee,Belgium EHT-Engineering Consulting Ltd.,S(a)o Paulo,Brazil Division 6.3 Tribology & Wear Protection,BAM Federal Institute for Materials Research and Testing,Un CITIC Metal Co.,Ltd.Capital Mansion 6 Xinyuan Nanlu,Chaoyang District,Beijing 100004,China NiobelCon bvba,B-2970 Schilde,Belgium
国际会议
北京
英文
801-809
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）