Fabrication of Nd:YAG transparent ceramics with TEOS, MgO and compound additives as sintering aids

Yukun Li, Shengming Zhou, Hui Lin, Xiaorui Hou, Wenjie Li, Hao Teng, Tingting Jia

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

1 at.% Nd:YAG transparent ceramics were fabricated by solid-state reaction and vacuum sintering method using commercial Al2O3, YM2O3 and Nd2O3 as raw materials, TEOS, MgO and TEOS combined with MgO were used as additives. When using TEOS or MgO as sintering aids separately, the optimum dosage is 0.5 and 0.2 wt%, respectively. But residual second phases in the grain boundaries and pores are easily generated by adding excessive TEOS or MgO. The maximum transmittance at 1064nm of the sintered Nd:YAG ceramics is doped 0.4 wt% TEOS combined with 0.08 wt% MgO, nearly pore-free microstructure with the average grain size of more than 30 μm was obtained in this highest transparent sample. All samples sinter to near full density (>99.8%) at 1700 °C and the sample with 0.4 wt% TEOS combined with 0.08 wt% MgO has the highest densification rate. The excellent feature of using compound additives is to make the intensified liquid sintering start at a lower temperature in vacuum sintering, promoting the densification rate and obtaining the uncontaminated crystalline grains.

Original languageEnglish (US)
Pages (from-to)225-230
Number of pages6
JournalJournal of Alloys and Compounds
Volume502
Issue number1
DOIs
StatePublished - Jul 16 2010

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Sintering
Fabrication
Densification
Vacuum
Solid state reactions
Raw materials
Grain boundaries
Crystalline materials
Microstructure
Liquids
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Li, Yukun ; Zhou, Shengming ; Lin, Hui ; Hou, Xiaorui ; Li, Wenjie ; Teng, Hao ; Jia, Tingting. / Fabrication of Nd:YAG transparent ceramics with TEOS, MgO and compound additives as sintering aids. In: Journal of Alloys and Compounds. 2010 ; Vol. 502, No. 1. pp. 225-230.
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abstract = "1 at.{\%} Nd:YAG transparent ceramics were fabricated by solid-state reaction and vacuum sintering method using commercial Al2O3, YM2O3 and Nd2O3 as raw materials, TEOS, MgO and TEOS combined with MgO were used as additives. When using TEOS or MgO as sintering aids separately, the optimum dosage is 0.5 and 0.2 wt{\%}, respectively. But residual second phases in the grain boundaries and pores are easily generated by adding excessive TEOS or MgO. The maximum transmittance at 1064nm of the sintered Nd:YAG ceramics is doped 0.4 wt{\%} TEOS combined with 0.08 wt{\%} MgO, nearly pore-free microstructure with the average grain size of more than 30 μm was obtained in this highest transparent sample. All samples sinter to near full density (>99.8{\%}) at 1700 °C and the sample with 0.4 wt{\%} TEOS combined with 0.08 wt{\%} MgO has the highest densification rate. The excellent feature of using compound additives is to make the intensified liquid sintering start at a lower temperature in vacuum sintering, promoting the densification rate and obtaining the uncontaminated crystalline grains.",
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Fabrication of Nd:YAG transparent ceramics with TEOS, MgO and compound additives as sintering aids. / Li, Yukun; Zhou, Shengming; Lin, Hui; Hou, Xiaorui; Li, Wenjie; Teng, Hao; Jia, Tingting.

In: Journal of Alloys and Compounds, Vol. 502, No. 1, 16.07.2010, p. 225-230.

Research output: Contribution to journalArticle

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T1 - Fabrication of Nd:YAG transparent ceramics with TEOS, MgO and compound additives as sintering aids

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AU - Zhou, Shengming

AU - Lin, Hui

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AU - Teng, Hao

AU - Jia, Tingting

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AB - 1 at.% Nd:YAG transparent ceramics were fabricated by solid-state reaction and vacuum sintering method using commercial Al2O3, YM2O3 and Nd2O3 as raw materials, TEOS, MgO and TEOS combined with MgO were used as additives. When using TEOS or MgO as sintering aids separately, the optimum dosage is 0.5 and 0.2 wt%, respectively. But residual second phases in the grain boundaries and pores are easily generated by adding excessive TEOS or MgO. The maximum transmittance at 1064nm of the sintered Nd:YAG ceramics is doped 0.4 wt% TEOS combined with 0.08 wt% MgO, nearly pore-free microstructure with the average grain size of more than 30 μm was obtained in this highest transparent sample. All samples sinter to near full density (>99.8%) at 1700 °C and the sample with 0.4 wt% TEOS combined with 0.08 wt% MgO has the highest densification rate. The excellent feature of using compound additives is to make the intensified liquid sintering start at a lower temperature in vacuum sintering, promoting the densification rate and obtaining the uncontaminated crystalline grains.

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