TY - JOUR A1 - Yao, Dongxu A1 - Wirth, Cynthia A1 - Zeng, Y.-P. A1 - Jiang, D. A1 - Günster, Jens A1 - Heinrich, J. T1 - Near zero shrinkage porous Al2O3 prepared via 3D-printing and reaction bonding JF - Materials letters N2 - Porous Al2O3 with high porosity (~45%), remarkable flexural strength (~70 MPa), and low dimensional change (~1–2%), was produced by indirect 3D printing and reaction bonding. Coarse Al with good flowability was carried out printing green body. The green body was heat treated to get fully oxidized, volume expansion during oxidation simultaneously formed strong neck bonding, not only brought good strength, but also restricted shrinkage. Porous Al2O3 with architecture of macro pores designed by 3D printing and micro pores in the strut formed by packing of particles was obtained. The near zero shrinkage can facilitate precise design of product with complex shape. KW - Al2O3 reaction bonding PY - 2015 DO - https://doi.org/10.1016/j.matlet.2015.02.037 SN - 0167-577x SN - 1873-4979 VL - 147 SP - 116 EP - 118 PB - North-Holland Publ. Co. CY - Amsterdam AN - OPUS4-34960 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -