JPS62148397A - Method for synthesizing cubic zirconia single crystal by fz method - Google Patents
Method for synthesizing cubic zirconia single crystal by fz methodInfo
- Publication number
- JPS62148397A JPS62148397A JP28643585A JP28643585A JPS62148397A JP S62148397 A JPS62148397 A JP S62148397A JP 28643585 A JP28643585 A JP 28643585A JP 28643585 A JP28643585 A JP 28643585A JP S62148397 A JPS62148397 A JP S62148397A
- Authority
- JP
- Japan
- Prior art keywords
- single crystal
- cubic zirconia
- zirconia single
- crystal
- zirconia
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、キュービックジルコニア単結晶のＦＺ法によ
る合成に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the synthesis of cubic zirconia single crystals by the FZ method.
本発明は、キュービックジルコニア単結晶のＦＺ法によ
る合成において安定剤としてＹ２Ｏ３を１０〜２０ｍｏ
１％ 添加することによシ高温変態である等軸晶ジルコ
ニア＝キュービックジルフェアを常温まで保たせたもの
である。The present invention uses 10 to 20 mo of Y2O3 as a stabilizer in the synthesis of cubic zirconia single crystals by the FZ method.
By adding 1%, equiaxed crystal zirconia = cubic zirconia, which undergoes high-temperature transformation, can be maintained at room temperature.
キュービックジルコニア単結晶は、温度と酸素分圧の広
い範囲に渡ってイオン導電性を有するもので固体電解質
としての用途が期待されている。Cubic zirconia single crystals have ionic conductivity over a wide range of temperature and oxygen partial pressure, and are expected to be used as solid electrolytes.
従来、このキュービックジルコニア単結晶’ｆｒ：ＦＺ
法で合成することが試みられてきた。Conventionally, this cubic zirconia single crystal 'fr:FZ
Attempts have been made to synthesize it by methods.
しかし、キューピックジルコニアは、温度による変態を
生じるために、室温まで冷却する際に等軸晶から正方晶
・単斜晶との混合相に変化してしまい、等軸晶ジルコニ
ア＝キュービックジルコニア単結晶を得ることが困難で
あった。However, because cupic zirconia undergoes transformation due to temperature, it changes from equiaxed to a mixed phase of tetragonal and monoclinic when cooled to room temperature, and equiaxed zirconia = cubic zirconia single crystal. was difficult to obtain.
そこで本発明は、このような問題点を解決するもので、
その目的とするところは、高温変態であるキュービック
ジルコニア単結晶’ｔＦＺ法により合成するところにあ
る。Therefore, the present invention aims to solve these problems.
Its purpose is to synthesize it by the cubic zirconia single crystal 'tFZ method, which is a high-temperature transformation.
本発明は、キュービックジルコニア単結晶’Ｆｔ： Ｆ
Ｚ法で合成する際に、安定剤としてＹ２Ｏ３を１０〜２
０ｍｏ１％添加することを特徴とする。The present invention is a cubic zirconia single crystal 'Ft: F
When synthesizing using the Z method, 10 to 2 Y2O3 is used as a stabilizer.
It is characterized by adding 0mo1%.
〔作用〕 。[Effect].
本発明において、安定剤として添加されるＹ２Ｏ３とジ
ルコニア（Ｚｒ０２）との間には広い範囲で置換型固溶
がおこる。この内ジルコニア（Ｚｒ０２）単結晶に１０
〜２０ｍｏ１％Ｙ ２０ ｓを固溶させた場合において
は、Ｙ＋（イオン半径−１，０６ズ）がＺｒ”（イオン
半径＝α８７ズ）の位置に置換したことによシ生ずるイ
オンの価数の差が、陽イオンと陰イオンのサイトの関係
が１：２であるように酸素イオンの格子空孔を生成する
ことＫより補償されるた込に、等軸晶固一体単−晶＝キ
ュービックジルコニアが生成できるのである。In the present invention, substitution type solid solution occurs in a wide range between Y2O3 and zirconia (Zr02) added as a stabilizer. Of these, 10 were found in zirconia (Zr02) single crystal.
When ~20 mo1% Y 20 s is dissolved in solid solution, the valence of the ion resulting from the substitution of Y+ (ion radius -1,06 degrees) at the position of Zr'' (ion radius = α87 degrees) The difference is compensated for by creating lattice vacancies for oxygen ions so that the relationship between cation and anion sites is 1:2. can be generated.
原料であるｚｒＯＣ１２及びＹ（ＮＯａ） ３をＹ２０
３１４ｍｏ１％となるよう調合し、その水溶液に６Ｎの
ＮＨ４ＯＨを加えることによりＺ ｒＯｚ −Ｙ ２０
ｇ混合粉末の沈殿を得た。この沈殿物を蒸留水で洗浄
・ろ過し、１２５℃で２４ｈ乾燥してラバープレスした
のち１０００℃で裏反焼したものを原料棒とした。これ
を種結晶と共にＦＺ炉にセットし、５０、／ｈの成長速
度で結晶の育成を行った。この得られた結晶は、常温ま
で冷却する際にも白濁することなく、無色透明であった
。これを粉末Ｘ線法で調べたところ、等軸晶のみで単斜
晶、正方晶への変態はなかった。The raw materials zrOC12 and Y(NOa) 3 were converted into Y20
Z rOz -Y 20 by adding 6N NH4OH to the aqueous solution.
g A precipitate of mixed powder was obtained. This precipitate was washed and filtered with distilled water, dried at 125°C for 24 hours, rubber pressed, and then reverse fired at 1000°C to obtain a raw material rod. This was set in an FZ furnace together with a seed crystal, and crystals were grown at a growth rate of 50 mm/h. The obtained crystals did not become cloudy even when cooled to room temperature and remained colorless and transparent. When this was examined by powder X-ray method, only equiaxed crystals were found, with no transformation to monoclinic or tetragonal crystals.
また断面についてＥＰＭＡによる組成分析を行ったが、
検出できるほどの組成変動は認められなかった。In addition, composition analysis was performed on the cross section using EPMA, but
No detectable compositional variations were observed.
一方、Ｙ２Ｏ３が↑Ｏｍｏ１％ より少ない領域では
、原料棒は透明に融解するが、常温まで冷却する際に白
濁してしまい透明な単結晶は、育成できなかった。これ
を粉末Ｘ線回折法で調べた結果、５〜１０ｍｏ１％の結
晶では、等軸晶と正方晶との５ｍｏ１％の結晶では、等
軸晶と単斜晶との混合相であった。On the other hand, in a region where Y2O3 is less than ↑Omo1%, the raw material rod melts transparently, but becomes cloudy when cooled to room temperature, making it impossible to grow a transparent single crystal. As a result of examining this by powder X-ray diffraction method, it was found that in the case of 5 to 10 mo1% of the crystal, the crystal was a mixed phase of equiaxed crystal and tetragonal crystal, and in the case of 5 mo1% of the crystal, it was a mixed phase of equiaxed crystal and monoclinic crystal.
以上述べたように、キューピックジルコニア単結晶のＦ
Ｚ法による合成において安定剤としてＹ２Ｏ３を１０〜
２０ｍｏ１％添加することにより高温変態である等軸晶
ジルコニア−キュービックジルコニア単結晶が常温で得
られるという漏果を有する。As mentioned above, the F of cupic zirconia single crystal
Y2O3 is used as a stabilizer in the synthesis by the Z method from 10 to
By adding 20 mo1%, a high-temperature transformation equiaxed zirconia-cubic zirconia single crystal can be obtained at room temperature.
□ 以上□
Claims (1)
ることを特徴とするキュービックジルコニア単結晶のＦ
Ｚ法による合成方法。Cubic zirconia single crystal F characterized by adding 10 to 20 mol% of Y_2O_3 as a stabilizer
Synthesis method using Z method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28643585A JPS62148397A (en) | 1985-12-19 | 1985-12-19 | Method for synthesizing cubic zirconia single crystal by fz method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28643585A JPS62148397A (en) | 1985-12-19 | 1985-12-19 | Method for synthesizing cubic zirconia single crystal by fz method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62148397A true JPS62148397A (en) | 1987-07-02 |
Family
ID=17704349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28643585A Pending JPS62148397A (en) | 1985-12-19 | 1985-12-19 | Method for synthesizing cubic zirconia single crystal by fz method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62148397A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100485719B1 (en) * | 2002-05-09 | 2005-04-27 | 주식회사 휘닉스피디이 | A process for producing largely cubic zirconia using a melting furnace improved a charging capacity |
| KR100509346B1 (en) * | 2003-04-25 | 2005-08-22 | 주식회사 휘닉스피디이 | A process for producing single crystals of green colored cubic zirconia |
-
1985
- 1985-12-19 JP JP28643585A patent/JPS62148397A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100485719B1 (en) * | 2002-05-09 | 2005-04-27 | 주식회사 휘닉스피디이 | A process for producing largely cubic zirconia using a melting furnace improved a charging capacity |
| KR100509346B1 (en) * | 2003-04-25 | 2005-08-22 | 주식회사 휘닉스피디이 | A process for producing single crystals of green colored cubic zirconia |
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