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Dysprosium-doped hexagonal yttrium aluminate ceramic powder and preparation method thereof
The invention belongs to the technical field of preparation of ceramic materials, and particularly relates to a dysprosium-doped hexagonal yttrium aluminate ceramic powder and a preparation method thereof. The preparation method comprises the following steps: mixing dysprosium nitrate pentahydrate, yttrium nitrate hexahydrate, aluminum nitrate nonahydrate and citric acid monohydrate, dissolving in deionized water, adding ammonia water to regulate the pH value to 1-2, sufficiently stirring, evaporating water, and drying to obtain xerogel; carrying out heat treatment, ball milling and drying on the xerogel to obtain a precursor powder; and (2) putting the precursor powder into a graphite reactor, sintering in a discharge plasma sintering unit, cooling to room temperature after finishing sintering, and grinding to obtain the dysprosium-doped hexagonal yttrium aluminate ceramic powder. The method can obtain the Dy:YAH powder with uniform and small particle size of which the crystalline phase is single-phase YAH. The Dy:YAH powder has favorable sintering activity, and can be used for preparing fine-crystalline Dy:YAH powder or Dy:YAH ceramic at low temperature.
Dysprosium-doped hexagonal yttrium aluminate ceramic powder and preparation method thereof
The invention belongs to the technical field of preparation of ceramic materials, and particularly relates to a dysprosium-doped hexagonal yttrium aluminate ceramic powder and a preparation method thereof. The preparation method comprises the following steps: mixing dysprosium nitrate pentahydrate, yttrium nitrate hexahydrate, aluminum nitrate nonahydrate and citric acid monohydrate, dissolving in deionized water, adding ammonia water to regulate the pH value to 1-2, sufficiently stirring, evaporating water, and drying to obtain xerogel; carrying out heat treatment, ball milling and drying on the xerogel to obtain a precursor powder; and (2) putting the precursor powder into a graphite reactor, sintering in a discharge plasma sintering unit, cooling to room temperature after finishing sintering, and grinding to obtain the dysprosium-doped hexagonal yttrium aluminate ceramic powder. The method can obtain the Dy:YAH powder with uniform and small particle size of which the crystalline phase is single-phase YAH. The Dy:YAH powder has favorable sintering activity, and can be used for preparing fine-crystalline Dy:YAH powder or Dy:YAH ceramic at low temperature.
Dysprosium-doped hexagonal yttrium aluminate ceramic powder and preparation method thereof
WANG YUCHENG (author) / ZHANG WEI (author) / FU ZHENGYI (author) / WANG WEIMIN (author) / WANG HAO (author) / ZHANG JINYONG (author) / ZHANG FAN (author) / WANG RONGRONG (author)
2015-06-17
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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