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Ceramic material of pyrochlore crystal structure with low thermal conductivity and manufacturing method of the same

机译：低热导率烧绿石晶体结构的陶瓷材料及其制造方法

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摘要

A pyrochlore crystal structured ceramic material and a manufacturing method thereof are provided to show low thermal conductivity of 1.3~1.6 W/mK while preventing a rapid decrease in thermal expansion coefficient within a temperature range of 200~400°C. A pyrochlore crystal structured ceramic material has a pyrochlore crystal structure of A2B2O7 and a composition of LaaY2-aCe2O7(0a2 and the a is an actual number). In the structure, the A site consists of a rare earth element including at least La and Y; and the B site is Ce. The A site additionally contains an element of Gd and the composition of La2-aGda+b-2Y2-bCe2O7(the a and b are actual numbers and satisfy the inequality of 0a2 and 0b2).

机译：提供一种烧绿石晶体结构的陶瓷材料及其制造方法，以显示出1.3〜1.6W / mK的低导热率，同时防止在200〜400℃的温度范围内热膨胀系数的迅速降低。烧绿石晶体结构的陶瓷材料具有A 2 B 2 O 7的烧绿石晶体结构和LaaY 2 -aCe 2 O 7的组成（0 ＜a ＜2，a为实数）。在结构中，A位由至少包括La和Y的稀土元素组成; B站点是Ce。 A位点还包含Gd元素和La2-aGda + b-2Y2-bCe2O7的组成（a和b为实际数字，并且满足不等式0 <2和0 展开▼

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公开/公告号KR100915920B1

专利类型

公开/公告日2009-09-07

原文格式PDF

申请/专利权人
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申请/专利号KR20080007408

发明设计人 이성민;김형태;윤소영;
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申请日2008-01-24

分类号C04B35/505;C04B35/64;

国家 KR

入库时间 2022-08-21 19:11:41

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