RU95113694A - METHOD FOR PRODUCING TRANSPARENT ALUMINOXIDE CERAMICS - Google Patents

METHOD FOR PRODUCING TRANSPARENT ALUMINOXIDE CERAMICS

Info

Publication number
RU95113694A
RU95113694A RU95113694/03A RU95113694A RU95113694A RU 95113694 A RU95113694 A RU 95113694A RU 95113694/03 A RU95113694/03 A RU 95113694/03A RU 95113694 A RU95113694 A RU 95113694A RU 95113694 A RU95113694 A RU 95113694A
Authority
RU
Russia
Prior art keywords
alkoxide
aluminum
producing transparent
ceramics
aluminoxide
Prior art date
Application number
RU95113694/03A
Other languages
Russian (ru)
Other versions
RU2083531C1 (en
Inventor
А.В. Беляков
А.Н. Сухожак
Original Assignee
Российский химико-технологический университет им.Д.И.Менделеева
Filing date
Publication date
Application filed by Российский химико-технологический университет им.Д.И.Менделеева filed Critical Российский химико-технологический университет им.Д.И.Менделеева
Priority to RU95113694A priority Critical patent/RU2083531C1/en
Priority claimed from RU95113694A external-priority patent/RU2083531C1/en
Application granted granted Critical
Publication of RU2083531C1 publication Critical patent/RU2083531C1/en
Publication of RU95113694A publication Critical patent/RU95113694A/en

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Claims (2)

1. Способ получения алюмооксидной прозрачной керамики из раствора алкоксида алюминия в спирте, включающий гидролиз алкоксида, удаление растворителя и всех побочных продуктов из смеси, измельчение геля, прессование заготовок и обжиг в вакууме, отличающийся тем, что гидролиз ведут водным раствором уплотняющей добавки при мольном соотношении вода : алкоксид алюминия от 3 до 5, порошок гидроксида алюминия до прессования заготовок переводят в порошок корунда при нагревании в окислительной атмосфере со скоростью 300 - 500 град./ч до максимальной температуры 950 - 1150oС и выдержке в течение 100 - 200 мин с последующим охлаждением вместе с печью.1. The method of producing transparent alumina ceramics from a solution of aluminum alkoxide in alcohol, including hydrolysis of alkoxide, removal of solvent and all by-products from the mixture, grinding the gel, pressing the blanks and firing in vacuum, characterized in that the hydrolysis is carried out with an aqueous solution of a sealing additive in a molar ratio water: aluminum alkoxide from 3 to 5, aluminum hydroxide powder is pressed into corundum powder before pressing the billets when heated in an oxidizing atmosphere at a speed of 300 - 500 deg./h to a maximum of mperatury 950 - 1150 o C and aged for 100 - 200 minutes followed by cooling with the furnace. 2. Способ по п. 1, отличающийся тем, что в качестве уплотняющей добавки используют смесь водорастворимых солей магния, иттрия и лантана в количестве, не превышающем в переводе на оксиды 0,2 мас.% от эквивалентного содержания оксида алюминия. 2. The method according to p. 1, characterized in that the mixture of water-soluble salts of magnesium, yttrium and lanthanum in an amount not exceeding 0.2 wt.% Of the equivalent content of aluminum oxide is used as a sealing additive.
RU95113694A 1995-08-01 1995-08-01 Method of manufacturing transparent alumina ceramics RU2083531C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU95113694A RU2083531C1 (en) 1995-08-01 1995-08-01 Method of manufacturing transparent alumina ceramics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU95113694A RU2083531C1 (en) 1995-08-01 1995-08-01 Method of manufacturing transparent alumina ceramics

Publications (2)

Publication Number Publication Date
RU2083531C1 RU2083531C1 (en) 1997-07-10
RU95113694A true RU95113694A (en) 1997-08-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU95113694A RU2083531C1 (en) 1995-08-01 1995-08-01 Method of manufacturing transparent alumina ceramics

Country Status (1)

Country Link
RU (1) RU2083531C1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9287106B1 (en) 2014-11-10 2016-03-15 Corning Incorporated Translucent alumina filaments and tape cast methods for making
RU2571777C1 (en) * 2014-11-26 2015-12-20 Акционерное общество "Научно-исследовательский и технологический институт оптического материаловедения Всероссийского научного центра "Государственный оптический институт им. С.И. Вавилова" (АО "НИТИОМ ВНЦ "ГОИ им. С.И. Вавилова") Method of producing aluminium oxide-based optical nanoceramic
US11639312B2 (en) 2015-06-16 2023-05-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Transparent ceramic as a component for fracture-resistant optical units

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