RU2013141975A - Способ получения поликристаллического оксинитрида алюминия, обладающего улучшенной прозрачностью - Google Patents

Способ получения поликристаллического оксинитрида алюминия, обладающего улучшенной прозрачностью Download PDF

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RU2013141975A
RU2013141975A RU2013141975/03A RU2013141975A RU2013141975A RU 2013141975 A RU2013141975 A RU 2013141975A RU 2013141975/03 A RU2013141975/03 A RU 2013141975/03A RU 2013141975 A RU2013141975 A RU 2013141975A RU 2013141975 A RU2013141975 A RU 2013141975A
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sintering
oxide
carried out
compound
relative density
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Джае-Хьюун ЛИ
Джи-Хье КИМ
Бо-Хун ХАН
Ин-Чул ДЖУН
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Индастри-Экэдемик Кооперэйшн Фаундэйшн, Йеунгнам Юниверсити
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Abstract

1. Способ получения прозрачного поликристаллического оксинитрида алюминия (AlON), в котором смесь порошков оксида алюминия (AlO) и нитрида алюминия (AlN) спекают при атмосферном давлении, включающий:осуществление первого спекания при температуре от 1575°C до 1675°C так, что относительная плотность равна или превышает 95%, и содержание чистого AlN находится в диапазоне от 17 до 26 мол.%; иосуществление второго спекания при температуре от 1900°C до 2050°C так, что получают относительную плотность, превышающую относительную плотность, полученную при первом спекании,в котором пропускание видимого света образца толщиной 1,5 мм, который получают вторым спеканием, равно или превышает 70%.2. Способ по п.1, в котором первое спекание и второе спекание осуществляют посредством добавления по меньшей мере одного вещества, выбираемого из 0,02-0,5 мас.% оксида иттрия (YO), 0,02-0,5 мас.% оксида лантана (LaO), соединения иттрия (Y), соответствующего 0,02-0,5 мас.% YO, или соединения лантана (La), соответствующего 0,02-0,5 мас.% LaO, в качестве спекающей добавки.3. Способ по п.2, в котором первое спекание и второе спекание осуществляют посредством дополнительного добавления от 0,06 до 0,29 мас.% оксида магния (MgO) или соединения магния (Mg), соответствующего от 0,06 до 0,29 мас.% MgO, в качестве спекающей добавки.4. Способ по п.1, в котором первое спекание и второе спекание осуществляют при избыточном давлении от 0,1 до 10 МПа при использовании давления газообразного азота.5. Способ по п.4, в котором первое спекание и второе спекание осуществляют при избыточном давлении от 0,1 до 0,3 МПа при использовании давления газообразного азота.

Claims (5)

1. Способ получения прозрачного поликристаллического оксинитрида алюминия (AlON), в котором смесь порошков оксида алюминия (Al2O3) и нитрида алюминия (AlN) спекают при атмосферном давлении, включающий:
осуществление первого спекания при температуре от 1575°C до 1675°C так, что относительная плотность равна или превышает 95%, и содержание чистого AlN находится в диапазоне от 17 до 26 мол.%; и
осуществление второго спекания при температуре от 1900°C до 2050°C так, что получают относительную плотность, превышающую относительную плотность, полученную при первом спекании,
в котором пропускание видимого света образца толщиной 1,5 мм, который получают вторым спеканием, равно или превышает 70%.
2. Способ по п.1, в котором первое спекание и второе спекание осуществляют посредством добавления по меньшей мере одного вещества, выбираемого из 0,02-0,5 мас.% оксида иттрия (Y2O3), 0,02-0,5 мас.% оксида лантана (La2O3), соединения иттрия (Y), соответствующего 0,02-0,5 мас.% Y2O3, или соединения лантана (La), соответствующего 0,02-0,5 мас.% La2O3, в качестве спекающей добавки.
3. Способ по п.2, в котором первое спекание и второе спекание осуществляют посредством дополнительного добавления от 0,06 до 0,29 мас.% оксида магния (MgO) или соединения магния (Mg), соответствующего от 0,06 до 0,29 мас.% MgO, в качестве спекающей добавки.
4. Способ по п.1, в котором первое спекание и второе спекание осуществляют при избыточном давлении от 0,1 до 10 МПа при использовании давления газообразного азота.
5. Способ по п.4, в котором первое спекание и второе спекание осуществляют при избыточном давлении от 0,1 до 0,3 МПа при использовании давления газообразного азота.
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