CN106187188A - 一种氟氧化镧透明陶瓷的制备方法 - Google Patents

一种氟氧化镧透明陶瓷的制备方法 Download PDF

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CN106187188A
CN106187188A CN201610536088.8A CN201610536088A CN106187188A CN 106187188 A CN106187188 A CN 106187188A CN 201610536088 A CN201610536088 A CN 201610536088A CN 106187188 A CN106187188 A CN 106187188A
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fluorine
lanthana
crystalline ceramics
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fluorine lanthana
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CN106187188B (zh
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王殿元
段兴凯
王庆凯
王侃民
郭艳艳
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Jiujiang University
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Abstract

本发明公开了一种氟氧化镧透明陶瓷的制备方法。该方法包括如下步骤：以六水硝酸镧和氟化铵为原料，采用沉淀法制备获得氟化镧(LaF3)纳米粉体，将所得氟化镧粉体在800‑850℃马弗炉退火得到氟氧化镧(LaOF)纳米粉体；将氟氧化镧纳米粉体研磨，900℃真空热压烧结，得到氟氧化镧透明陶瓷。本发明的制备方法具有工艺简单，成本低，易于工业化生产等优点，制备出的氟氧化镧陶瓷可作为优良的上转换发光和激光基质材料，具有广阔的应用前景。

Description

一种氟氧化镧透明陶瓷的制备方法
技术领域
本发明涉及一种氟氧化镧透明陶瓷的制备方法，具体属于陶瓷材料制备技术领域。
背景技术
氟氧化镧由于其独特的电、光和电化学性能而成为一种重要的功能材料，主要应用于荧光材料(如平板显示器、X射线增强荧光粉等)、离子导体、催化剂等，而且在电介质、光学、光电子学等方面具有巨大的潜力。
研究发现，氟氧化镧在778℃会发生六方相到立方相的结构相变，立方结构的材料折射率不具有方向依赖性，可以烧结获得透明陶瓷。因此若制备得到氟氧化镧透明陶瓷，既具有良好的光学性能，又有良好的化学稳定性和热稳定性，将大大提高其作为上转换发光和激光基质材料的性能，具有广阔的应用前景。
本发明提供了一种氟氧化镧透明陶瓷的制备方法，以氟氧化镧纳米粉体为原料，900℃真空热压烧结，既避免了LaOF被氧化，又可提高陶瓷致密度和透光率，从而得到氟氧化镧透明陶瓷。本发明的制备方法具有工艺简单，成本低，易于工业化生产等优点。
发明内容
本发明的目的在于提供一种氟氧化镧透明陶瓷的制备方法，具体通过以下技术方案实现。
本发明公开了一种氟氧化镧透明陶瓷的制备方法，包括如下步骤：
将六水硝酸镧4.33g溶于100ml水中，加入5ml聚乙二醇200，搅拌均匀得溶液A；将氟化铵2.22g溶于50ml水中，得溶液B；将溶液B滴入溶液A中，磁力搅拌反应1-2h，陈化10-15h，将所得混合液产物离心、洗涤、干燥后，于800-850℃马弗炉中退火2-4h，得到氟氧化镧纳米粉体；六水硝酸镧与氟化铵摩尔比为1:6-8，聚乙二醇200与溶液A中水的体积比为1:15-20。
将步骤(1)所得的氟氧化镧粉体研磨30min，在900℃真空炉中热压烧结2-4h，得到氟氧化镧透明陶瓷。
本发明的有益效果:本发明公开的氟氧化镧透明陶瓷的制备方法，采用沉淀法首先制备氟化镧LaF3纳米粉体，然后在700℃马弗炉中退火，氟化镧被氧化成氟氧化镧，此时得到的氟氧化镧为六方相结构。由于氟氧化镧在778℃会发生六方相到立方相的结构相变，立方结构的材料折射率不具有方向依赖性，易于烧结获得透明陶瓷。本发明中提供的方法中采用了900℃真空热压烧结，既避免了LaOF被氧化，又可提高陶瓷致密度，从而得到氟氧化镧透明陶瓷。本发明的制备方法具有工艺简单，成本低，易于工业化生产等优点，制备出的氟氧化镧陶瓷可作为优良的上转换发光和激光基质材料，具有广阔的应用前景。
附图说明
图1为本发明氟氧化镧透明陶瓷实物照片。
具体实施方式
实施例1
一种氟氧化镧透明陶瓷的制备方法，包括以下步骤：
将六水硝酸镧4.33g溶于100ml水中，加入5ml聚乙二醇200，搅拌均匀得溶液A；将氟化铵2.22g溶于50ml水中，得溶液B，将溶液B滴入溶液A中，磁力搅拌反应1h，陈化12h；将所得混合液离心、洗涤、干燥，于850℃马弗炉中退火2h，得到氟氧化镧纳米粉体；
将步骤(1)所得的氟氧化镧粉体研磨30min，在900℃真空炉中热压烧结2h，得到氟氧化镧透明陶瓷。

Claims (1)

1.一种氟氧化镧透明陶瓷的制备方法，其特征在于：所述的制备方法包括以下步骤：
（1）将六水硝酸镧4.33g溶于100ml水中，加入5ml聚乙二醇200，搅拌均匀得溶液A；将氟化铵2.22g溶于50ml水中，得溶液B；将溶液B滴入溶液A中，磁力搅拌反应1-2h，陈化10-15h，将所得混合液产物离心、洗涤、干燥后，于800-850℃马弗炉中退火2-4h，得到氟氧化镧纳米粉体；六水硝酸镧与氟化铵摩尔比为1:6-8，聚乙二醇200与溶液A中水的体积比为1:15-20；
（2） 将步骤(1)所得的氟氧化镧粉体研磨30min，在900℃真空炉中热压烧结2-4h，得到氟氧化镧透明陶瓷。
CN201610536088.8A 2016-07-10 2016-07-10 一种氟氧化镧透明陶瓷的制备方法 Expired - Fee Related CN106187188B (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115231605A (zh) * 2022-07-26 2022-10-25 宣城市晶和环保新材料科技有限公司 一种高纯纳米氟氧化镧的制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59195529A (ja) * 1983-04-15 1984-11-06 Asahi Glass Co Ltd 導電性物質
CN105693246A (zh) * 2016-03-11 2016-06-22 九江学院 一种氧化钇透明陶瓷的制备方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59195529A (ja) * 1983-04-15 1984-11-06 Asahi Glass Co Ltd 導電性物質
CN105693246A (zh) * 2016-03-11 2016-06-22 九江学院 一种氧化钇透明陶瓷的制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115231605A (zh) * 2022-07-26 2022-10-25 宣城市晶和环保新材料科技有限公司 一种高纯纳米氟氧化镧的制备方法
CN115231605B (zh) * 2022-07-26 2024-02-06 宣城市晶和环保新材料科技有限公司 一种高纯纳米氟氧化镧的制备方法

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