文献类型：期刊文献

英文题名：Glass formation and crystallization behavior of a novel GeS₂-Sb₂S₃-PbS chalcogenide glass system

作者：Xia, Fang; Zhang, Xianghua; Ren, Jing; Chen, Guorong; Ma, Hongli; Adam, J. L.

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Inst Inorgan Mat, Shanghai 200237, Peoples R China;[2]Univ Rennes 1, Lab Verres & Ceram, F-35042 Rennes, France

年份：2006

卷号：89

期号：7

起止页码：2154

外文期刊名：JOURNAL OF THE AMERICAN CERAMIC SOCIETY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000238438900014)】；

语种：英文

摘要：In the present work, a large glass-forming region was found in the novel GeS2-Sb2S3-PbS system, in which up to 58 at.% PbS could be incorporated without deteriorating the thermal and physical properties of glasses. Infrared (IR) transmitting glass ceramics with a large amount of small-sized crystals ( < 100 nm) were then produced by choosing sub-stable compositions and annealing at fairly low temperatures (15 degrees-30 degrees C above T-g) for long durations (up to 100 h). Crystals were identified by X-ray diffraction as Pb2GeS4, PbGeS3, PbS, PbSb2S4, etc., depending on base glass compositions. Compared with base glasses, glass ceramics showed much improved thermal shock resistance and fracture toughness, making them good candidate materials for IR optics.