Kim, DJ Lee, MH Kim, CE 2024-01-21T15:01:18Z 2024-01-21T15:01:18Z 2021-09-05 1999-11 0002-7820 https://pubs.kist.re.kr/handle/201004/141868 Alumina-glass dental composites were prepared by tape casting and sintering at 1120 degrees C, followed by glass infiltration at 1100 degrees C. Flexural strength and fracture toughness of the composites were investigated in terms of the influence of tape constituents, namely, alumina powder, binder, and plasticizer; on the mechanical properties. Both strength and toughness increased with increasing alumina fraction in tapes and decreased with increasing binder content in binder/plasticizer mixtures. These observations were consistent with the influence of the constituents on mean alumina particle distance in tapes, suggesting that the high strength of glass-infiltrated alumina composites is related to toughening by crack bowing, The strength and fracture toughness of the tape-cast composites, optimized for forming dental crowns, were 508 MPa and 3.1 MPa.m(1/2) respectively, obtained from biaxial tests. Shrinkage of the composites decreased with increasing thermocompression pressure, applied to the tapes prior to sintering, and heating rate to the sintering temperature. English AMER CERAMIC SOC FRACTURE-TOUGHNESS ZIRCONIA Mechanical properties of tape-cast alumina-glass dental composites Article 1 JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.82, no.11, pp.3167 - 3172 JOURNAL OF THE AMERICAN CERAMIC SOCIETY 82 11 3167 3172 scie scopus 000085763800035 2-s2.0-0033225898 Materials Science, Ceramics Materials Science Article FRACTURE-TOUGHNESS ZIRCONIA alumina-glass composites tape casting mechanical properties