TY - GEN
T1 - Three-dimentional printing of Ti-Al-O-C composites
AU - Yin, Xiaowei
AU - Travitzky, Nahum
AU - Greil, Peter
PY - 2006
Y1 - 2006
N2 - In the present work, the near-net-shape manufacturing of Ti-Al-O-C composites by a combination of indirect three-dimensional printing and pressureless reactive melt infiltration process was explored. A porous ceramic preform was fabricated by printing a powder blend of TiC, TiO2 and dextrin ((C6H10O5n). The printed preform was pyrolysized and presintered in inert atmosphere at 800°C and 1400°C, respectively. The printed and presintered preforms contained a bimodal pore size distribution with intra-agglomerate pores (d50 ≈ 0.7 μm) and inter-agglomerate pores (d50 ≈ 30 μm), which were subsequently infiltrated by aluminium melt spontaneously in argon above 1050°C. A redox reaction at 1400°C resulted in the formation of dense Ti-Al-O-C composites mainly composed of Ti3AlC2, TiAl 3, Al and Al2O3, which attained a bending strength of 320 MPa, a Young's modulus of 184 GPa, and a Vicker's hardness of 2.5 GPa.
AB - In the present work, the near-net-shape manufacturing of Ti-Al-O-C composites by a combination of indirect three-dimensional printing and pressureless reactive melt infiltration process was explored. A porous ceramic preform was fabricated by printing a powder blend of TiC, TiO2 and dextrin ((C6H10O5n). The printed preform was pyrolysized and presintered in inert atmosphere at 800°C and 1400°C, respectively. The printed and presintered preforms contained a bimodal pore size distribution with intra-agglomerate pores (d50 ≈ 0.7 μm) and inter-agglomerate pores (d50 ≈ 30 μm), which were subsequently infiltrated by aluminium melt spontaneously in argon above 1050°C. A redox reaction at 1400°C resulted in the formation of dense Ti-Al-O-C composites mainly composed of Ti3AlC2, TiAl 3, Al and Al2O3, which attained a bending strength of 320 MPa, a Young's modulus of 184 GPa, and a Vicker's hardness of 2.5 GPa.
UR - http://www.scopus.com/inward/record.url?scp=33845996140&partnerID=8YFLogxK
M3 - 会议稿件
AN - SCOPUS:33845996140
SN - 0470080523
SN - 9780470080528
T3 - Ceramic Engineering and Science Proceedings
SP - 473
EP - 482
BT - Mechanical Properties and Performance of Engineering Ceramics and Composites II - A Collection of Papers Presented at the 30th International Conference on Advanced Ceramics and Composites
T2 - Mechanical Properties and Performance of Engineering Ceramics and Composites Symposium - 30th International Conference on Advanced Ceramics and Composites
Y2 - 22 January 2006 through 27 January 2006
ER -