Novel Approach for the Selective Laser Sintering of Combustion Synthesized Titanium Diboride Based Ceramic Composites
Direct fabrication of titanium diboride based ceramic composites with complex geometry and desired physico-mechanical characteristics was performed by using one of the advanced techniques of additive manufacturing technologies-selective laser sintering(SLS).Titanium diboride based ceramic composites were fabricated by innovative method of combustion synthesis(CS),which is characterized by low energy consumption and high performance(productivity and effectiveness).Exothermic mixtures of elementary precursors were used for the preparation of composite powders in the constant pressure reactor under nitrogen atmosphere.The influence of initial mixture composition,sample geometry and external gas pressure on the combustion features,products phase and microstructure characteristics were examined.Synthesized composite powders were subjected to sintering in nitrogen atmosphere to obtain complex shaped specimens,especially lattice structures with a given geometry.It was shown that a laser current and a point distance have the most significant influence on the mechanical properties and microstructure of ceramic lattice.Set of optimal parameters has been obtained for the synthesis and sintering processes.
Titanium diboride Combustion synthesis Combustion law Selective laser melting Lattice structure
Aydinyan Sofiya Liu Le Hussainova Irina
Department of Materials and Industrial Engineering,Tallinn University of Technology,Ehitajate tee 5,19086,Tallinn,Estonia
国际会议
北京
英文
1617-1621
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）