Co-precipitation synthesis and vacuum sintering of Nd:YAG powders for transparent ceramics

Zhang, W.; Lu, Tiecheng; Wei, Nian; Shi, Yanli; Ma, Benyuan; Luo, Huan; Zhang, Z.B.; Deng, Jing; Guan, Zhouguo; Zhang, H.R.; Li, C.N.; Niu, Ruiyuan

doi:10.1016/j.materresbull.2015.04.063

Cited by 33 publications

(8 citation statements)

References 38 publications

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“…The manufacturing process during of separate ceramics is similar to that reported in our previous works [23][24][25][26][27]. Neodymium nitrate (Nd(NO 3 99.99%) and ammonium aluminum sulfate (NH 4 Al(SO 4 ) 2 ·12H 2 O, 99.99%) were mixed together in stoichiometric proportions to form the chemical stoichiometry composition, with Nd 3+ doping concentrations of 0 at.% and 2.0 at.%, respectively, in distilled water.…”

Section: Nd:yag/yag Transparent Ceramicsmentioning

confidence: 55%

“…Nevertheless, the thermal diffusion bonding technology of Nd:YAG/YAG ceramics has not yet been investigated systematically, and especially, the optimal conditions and underlying mechanism of diffusion across contact surfaces of bulk ceramics are seldom reported so far. We previously studied the synthesis of high purity and agglomeration-free YAG nano-powders [23][24][25], the influence of post-annealing and post-HIP on Nd:YAG ceramics [26,27], and light scattering loss of Nd:YAG ceramics by pores [28]. Most recently we fabricated composite Nd:YAG/YAG transparent ceramics by vacuum sintering.…”

Section: Introductionmentioning

confidence: 99%

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Direct thermal diffusion bonding of Nd:YAG/YAG composite transparent ceramics by vacuum sintering

Zhang

Chen

et al. 2017

Journal of the European Ceramic Society

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Section: Nd:yag/yag Transparent Ceramicsmentioning

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Direct thermal diffusion bonding of Nd:YAG/YAG composite transparent ceramics by vacuum sintering

Zhang

Chen

et al. 2017

Journal of the European Ceramic Society

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“…For ceramic materials to function as laser gain media, high optical quality with minimal internal scattering and defects is required. The common processing method for highly transparent Nd:YAG ceramics is densification of nano-powders by vacuum sintering 4 , 5 , 9 – 20 . This process is highly effective for producing functional transparent ceramics but requires several time-consuming steps, including preparation of a green body, sintering at a high temperature under high vacuum and post-sintering annealing.…”

Section: Introductionmentioning

confidence: 99%

Pressure-assisted sintering and characterization of Nd:YAG ceramic lasers

Wagner

Meshorer

Ratzker

et al. 2021

Sci Rep

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Spark plasma sintering (SPS) is an advanced one-stage, rapid, near-net shape densification technique combining uniaxial pressure with resistive heating. Various transparent ceramics have been successfully fabricated by SPS, despite the existence of inherent carbon contamination and residual pores. Due to the disk-shape of SPS-processed samples, the technique may be suited for producing thin-disk ceramic laser materials. Nevertheless, an in-depth study of these materials has never been reported. With that goal in mind, the major focus of this study was to characterize the laser performance of Nd:YAG ceramics fabricated by one-stage SPS under conventional (60 MPa) and high (300 MPa) applied pressures. In addition to measuring the lasing slope efficiency and threshold, the passive losses associated with each sample were also evaluated. Surprisingly, it was found that in-line transmittance spectra do not provide accurate predictions of laser performance due to the nature of residual porosity. Moreover, homogeneity and beam quality were assessed, and comparisons were drawn between conventional and high-pressure SPS ceramics. This study lays the groundwork for the future of laser materials fabricated by SPS or similar pressure-assisted techniques.

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“…There are numerous reports on the fabrication of YAG ceramics. Most of the presented methods involve the utilization of sintering aids such as silica, nanosilica [6,7] or TEOS [8][9][10][11] and involve sintering for at least 10 h at temperatures above 1700°C.…”

Section: Introductionmentioning

confidence: 99%

Investigation of YAP/YAG powder sintering behavior using advanced thermal techniques

Gizowska

Perkowski

Piątek

et al. 2019

J Therm Anal Calorim

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The fabrication process of transparent YAG (Y 3 Al 5 O 12 ) ceramics with an emphasis on examination of the sintering process and microstructural analysis is reported herein. Nanometric powder with an equivalent spherical diameter d BET = 60 nm consists mainly of hexagonal YAP phase (YAlO 3 ). According to sintering analysis carried out using a dilatometer and high-temperature XRD analysis, the phase composition and phase transformation taking place at elevated temperatures accompany the sintering process and the fastest sintering rate was observed at temperatures of YAG formation. Based on the dilatometric and XRD analyses vs temperature, three temperatures were selected for pressureless sintering. Presintered samples were subjected to sintering under isostatic pressure using a hot isostatic pressing, after which transparent YAG was obtained. The best results were obtained for samples presintered at a relatively low temperature of 1600°C, and for thus obtained sample, the in-line transmittance was 64% at k = 808 nm.

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Co-precipitation synthesis and vacuum sintering of Nd:YAG powders for transparent ceramics

Cited by 33 publications

References 38 publications

Direct thermal diffusion bonding of Nd:YAG/YAG composite transparent ceramics by vacuum sintering

Direct thermal diffusion bonding of Nd:YAG/YAG composite transparent ceramics by vacuum sintering

Pressure-assisted sintering and characterization of Nd:YAG ceramic lasers

Investigation of YAP/YAG powder sintering behavior using advanced thermal techniques

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