文献类型：期刊文献

英文题名：Promotion of powder crystallinity and its influence on the properties of Nd:YAG transparent ceramics

作者：Ma, Benyuan[1];Wang, Bin[2];Zhang, Wei[3];Wei, Nian[4];Lu, Tiecheng[4];He, Junbao

第一作者：Ma, Benyuan

通讯作者：Wang, B[1];Lu, TC[2]

机构：[1]Nanyang Normal Univ, Coll Phys & Elect Engn, Nanyang 473061, Peoples R China;[2]Xinxiang Univ, Phys & Elect Engn Dept, Xinxiang 453003, Peoples R China;[3]Southwest Inst Tech Phys, Chengdu 610064, Peoples R China;[4]Sichuan Univ, Minist Educ, Key Lab Radiat Phys & Technol, Dept Phys, Chengdu 610064, Peoples R China

第一机构：Nanyang Normal Univ, Coll Phys & Elect Engn, Nanyang 473061, Peoples R China

通讯机构：[1]corresponding author), Xinxiang Univ, Phys & Elect Engn Dept, Xinxiang 453003, Peoples R China;[2]corresponding author), Sichuan Univ, Minist Educ, Key Lab Radiat Phys & Technol, Dept Phys, Chengdu 610064, Peoples R China.|[110717]新乡学院物理与电子工程学院;[11071]新乡学院;

年份：2017

卷号：64

起止页码：384-390

外文期刊名：OPTICAL MATERIALS

收录：;EI(收录号：20170203236327);Scopus(收录号：2-s2.0-85008712563);WOS:【SCI-EXPANDED(收录号:WOS:000394635200061)】；

基金：This work was supported by the Key Scientific and Technological Project of Technology Depal Intent of Henan Province of China (Grant No. 162102210305), the Science Fund of Educational Department of Henan Province of China (Grant No. 15A140030 and No. 15A140032), the Science Fund Of Nanyang Normal University (Grant No. ZX2014089), Xinxiang University Doctor Initial Research Program (Grant No. 1366020018) and Major Program Xinxiang university (Grant No. 15ZP01).

语种：英文

外文关键词：Transparent ceramics; Co-precipitation; Powder crystallinity; Surface defect; Sintering

摘要：The Nd:YAG raw powders of various crystallinities were obtained from the co-precipitated precursor by calcining at 1100-1250 C-circle for 2--6 h. XRD, HRTEM and EDX were employed to analyze the powder crystallinity, e.g., its phases, changes of lattice constants, surface defects and morphologies. The subsequent ceramics were fabricated by simply vacuum sintering at 1780 C-circle for 10 h to well compare the initial intrinsic effect of various powder crystallinities. The induced defect states and corresponding properties of ceramics were explored and discussed. The results show that poorly crystallized powder involves a thick layer on particle surface, which is not well crystallized but can escape XRD detection. This poorly crystallized powder contributes more the inhomogeneous ceramic sintering and introduces more the defects in final ceramics, e.g., impure phase inclusions and dislocations. The results reveal that powder crystallinity should be promoted and considered as a further way to improve ceramic properties. (C) 2017 Elsevier B.V. All rights reserved.