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论文类型：期刊论文

发表时间：2015-01-15

发表刊物：SCRIPTA MATERIALIA

收录刊物：SCIE、EI、Scopus

卷号：95

期号：1

页面范围：39-41

ISSN号：1359-6462

关键字：Laser deposition; Eutectic solidification; Hardness test; Ceramics; Al2O3-ZrO2

摘要：Cylindrical and arc-shaped Al2O3-ZrO2 (Y2O3) eutectic ceramic structures without any binders were directly fabricated by laser engineered net shaping from pure powders. During the process, mixed ceramic powders are completely melted at the required position by a high-energy laser beam, yielding fully dense ceramic with fine-grained microstructure in which the eutectic spacing is similar to 100 nm. The average microhardness and fracture toughness of the produced ceramic are 17.15 GPa and 4.79 MPa.m(1/2), respectively. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.