JPS63210003A - Production of aluminum nitride powder - Google Patents
Production of aluminum nitride powderInfo
- Publication number
- JPS63210003A JPS63210003A JP4176987A JP4176987A JPS63210003A JP S63210003 A JPS63210003 A JP S63210003A JP 4176987 A JP4176987 A JP 4176987A JP 4176987 A JP4176987 A JP 4176987A JP S63210003 A JPS63210003 A JP S63210003A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum nitride
- nitride powder
- powder
- nitrogen
- mixed
- 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.)
- Granted
Links
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 title claims abstract description 39
- 239000000843 powder Substances 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- VXYADVIJALMOEQ-UHFFFAOYSA-K tris(lactato)aluminium Chemical compound CC(O)C(=O)O[Al](OC(=O)C(C)O)OC(=O)C(C)O VXYADVIJALMOEQ-UHFFFAOYSA-K 0.000 claims abstract description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- 239000011812 mixed powder Substances 0.000 claims abstract description 13
- 239000012298 atmosphere Substances 0.000 claims abstract description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004202 carbamide Substances 0.000 claims abstract description 6
- 239000007864 aqueous solution Substances 0.000 claims description 22
- 150000001875 compounds Chemical class 0.000 claims description 11
- -1 nitrogen-containing compound Chemical class 0.000 claims description 10
- 230000001590 oxidative effect Effects 0.000 claims description 8
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 5
- 229920000877 Melamine resin Polymers 0.000 claims description 4
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims 2
- 235000019270 ammonium chloride Nutrition 0.000 claims 1
- 238000002156 mixing Methods 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000008103 glucose Substances 0.000 abstract description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005121 nitriding Methods 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 229920000609 methyl cellulose Polymers 0.000 description 2
- 239000001923 methylcellulose Substances 0.000 description 2
- 235000010981 methylcellulose Nutrition 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- OBOSXEWFRARQPU-UHFFFAOYSA-N 2-n,2-n-dimethylpyridine-2,5-diamine Chemical compound CN(C)C1=CC=C(N)C=N1 OBOSXEWFRARQPU-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 239000004471 Glycine Substances 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Ceramic Products (AREA)
Abstract
Description
【発明の詳細な説明】
〔技術分野〕
この発明は、高熱伝導性基板を製造するのに適した窒化
アルミニウム粉末の製法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method for producing aluminum nitride powder suitable for producing highly thermally conductive substrates.
ＩＣ等に代表される半導体素子の高集積化や大電力化が
進み、これに伴って、放熱性の良い電気絶縁材料が要求
されるようになった。これに応えて各種の高熱伝導性基
板が提案されている。その中でも特に窒化アルミニウム
セラミック基板が、熱伝導性、熱膨張性、電気絶縁性等
の点にすぐれていると言うことから、実用化が進んでい
る。BACKGROUND OF THE INVENTION As semiconductor devices such as ICs have become more highly integrated and have more power, electrical insulating materials with good heat dissipation properties have become required. In response to this demand, various highly thermally conductive substrates have been proposed. Among these, aluminum nitride ceramic substrates are being put into practical use because they are said to have excellent thermal conductivity, thermal expansion properties, electrical insulation properties, and the like.
ところが、この窒化アルミニウムセラ走ツク基板は、価
格が高いという欠点がある。この高価格の原因としては
、特に、原料となる窒化アルミニウム粉末が高価格であ
ること、焼結に高温を有することなどが挙げられる。However, this aluminum nitride ceramic substrate has the disadvantage of being expensive. The reasons for this high price include, in particular, the high cost of aluminum nitride powder as a raw material and the high temperature required for sintering.
従来から窒化アルミニウム粉末は、アルミニウムの直接
窒化やアルミナの炭素還元等によって製造されているが
、たとえば、アルミニウムの直接窒化法においては、高
純度で粒径の小さい窒化アルミニウム粉末を得ることが
困難であり、アルミナの炭素還元法においては、反応に
高温を要する、原料価格が高い等の問題があった。アル
ミナの炭素還元法の改良として、アルミニウム源を液状
態で混合する方法などが提案されているが、けん濁状態
での混合であり、分子オーダーでの混合がなされないた
め、反応に高温を要する等により、製造価格が高いなど
の問題が残っている。Conventionally, aluminum nitride powder has been produced by direct nitriding of aluminum or carbon reduction of alumina, but for example, it is difficult to obtain aluminum nitride powder with high purity and small particle size using the direct nitriding method of aluminum. However, in the carbon reduction method of alumina, there were problems such as high temperature required for the reaction and high raw material cost. As an improvement to the carbon reduction method of alumina, a method has been proposed in which the aluminum source is mixed in a liquid state, but since the mixing is in a suspended state and the mixing is not done on a molecular order, the reaction requires high temperatures. However, there remain problems such as high manufacturing costs.
この発明は、以上のような事情に鑑みて、高純度で微粒
子の易焼結性を有する窒化アルミニウム粉末を安価で得
ることができる窒化アルミニウム粉末の製法を提供する
ことを目的としている。SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a method for producing aluminum nitride powder that can obtain aluminum nitride powder of high purity and easy sinterability into fine particles at a low cost.
この発明は、以上のような目的を達成するために、塩基
性乳酸アルミニウムと水溶性炭素含有化合物または／お
よび水溶性窒素含有化合物を水溶液として混合し、前記
化合物の混合粉末を得、この混合粉末を、窒素ガスを含
む非酸化性雰囲気中で焼成して窒化アルミニウム粉末を
得ることを要旨としている。In order to achieve the above objects, the present invention mixes basic aluminum lactate and a water-soluble carbon-containing compound and/or a water-soluble nitrogen-containing compound as an aqueous solution to obtain a mixed powder of the compound, and this mixed powder The gist is to obtain aluminum nitride powder by firing in a non-oxidizing atmosphere containing nitrogen gas.
以下、この発明を工程順に詳しく説明する。Hereinafter, this invention will be explained in detail in the order of steps.
■ 塩基性乳酸アルミニウムと、水溶性炭素含有化合物
または／および水溶性窒素含有化合物を水溶液として混
合する。(2) Basic aluminum lactate and a water-soluble carbon-containing compound or/and a water-soluble nitrogen-containing compound are mixed as an aqueous solution.
塩基性乳酸アルミニウムは水溶液であるうえ、硫酸イオ
ン、塩素イオン、硝酸イオン等を含まないため、窒化ア
ルミニウム合成時の還元反応に悪影響を及ぼさない。こ
の水溶液では、分子オーダでの各成分が均質に混合され
ている。水溶性炭素含有化合物としては、ブドウ糖等糖
類、メチルセルロース、ポリエチレンオキサイド、ポリ
ビニルアルコール、リグニン等の水溶性のものが挙げら
れる。Basic aluminum lactate is an aqueous solution and does not contain sulfate ions, chloride ions, nitrate ions, etc., so it does not adversely affect the reduction reaction during aluminum nitride synthesis. In this aqueous solution, each component on the molecular order is homogeneously mixed. Examples of the water-soluble carbon-containing compound include water-soluble compounds such as sugars such as glucose, methylcellulose, polyethylene oxide, polyvinyl alcohol, and lignin.
水溶性窒素含有化合物としては、尿素、メラミン、グリ
シン、カルボニルヒドラジド、エチレンジアミン等の水
溶性のものが挙げられる。Examples of the water-soluble nitrogen-containing compound include water-soluble compounds such as urea, melamine, glycine, carbonyl hydrazide, and ethylenediamine.
■ 前記混合水溶液から、蒸発乾燥などにより、塩基性
乳酸アルミニウムと、炭素含有化合物または／および窒
素含有化合物が分子オーダーで均質に混合された混合微
細粉末を得る。(2) A mixed fine powder in which basic aluminum lactate and a carbon-containing compound and/or a nitrogen-containing compound are homogeneously mixed on a molecular order is obtained from the mixed aqueous solution by evaporation drying or the like.
乾燥温度としては１００〜２００℃が適当である。A suitable drying temperature is 100 to 200°C.
■ この混合物粉末を窒素ガスを含有する非酸化性雰囲
気で焼成して窒化アルミニウム粉末を得る。非酸化性雰
囲気としては、アルゴン、−ｆｌＪ化炭素、さらに好ま
しくは窒素、アンモニアなどが用いられる。なお、窒素
、アンモニアの場合はそれのみでもよく、他の非酸化性
雰囲気の併用は必要がない。(2) This mixed powder is fired in a non-oxidizing atmosphere containing nitrogen gas to obtain aluminum nitride powder. As the non-oxidizing atmosphere, argon, -flJ carbon, more preferably nitrogen, ammonia, etc. are used. In the case of nitrogen or ammonia, they may be used alone, and there is no need to use other non-oxidizing atmospheres.
焼成温度は９００℃以上、好ましくは１２００〜１８０
０℃である。なお、残留炭素は、窒化アルミニウム形成
後、６００〜７００℃の酸化性雰囲気中で加熱処理する
ようにすれば除去できる。Firing temperature is 900°C or higher, preferably 1200-180°C
It is 0°C. Note that residual carbon can be removed by heat treatment in an oxidizing atmosphere at 600 to 700° C. after forming aluminum nitride.
この発明の製法によれば、塩基性乳酸アルミニウムと水
溶性炭素含有化合物または／および水溶性窒素含有化合
物が分子オーダーで均質に混合された微細粉末を、窒素
ガスを含む非酸化性雰囲気で焼成するので、微細で均質
な窒化アルミニウム粉末を迅速にかつ安価に得ることが
できる。しかも、微細粉末であるから焼結性がよい。According to the manufacturing method of this invention, a fine powder in which basic aluminum lactate and a water-soluble carbon-containing compound or/and a water-soluble nitrogen-containing compound are homogeneously mixed on a molecular order is fired in a non-oxidizing atmosphere containing nitrogen gas. Therefore, fine and homogeneous aluminum nitride powder can be obtained quickly and at low cost. Moreover, since it is a fine powder, it has good sinterability.
また、混合物粉末中に窒素含有化合物を有している場合
には、局所的に還元窒化雰囲気が形成され混合物内部か
ら窒化反応が促進され、窒化アルミニウムが迅速に形成
される。Further, when the mixture powder contains a nitrogen-containing compound, a reducing nitriding atmosphere is locally formed to promote the nitriding reaction from within the mixture, and aluminum nitride is rapidly formed.
つぎに実施例を詳しく説明する。Next, examples will be explained in detail.
（実施例１）
塩基性乳酸アルミニウム１重量部に対し、尿素を０．３
重量部となるように混合した水溶液を作った。この水溶
液を蒸発させ１５０℃で乾燥して混合粉末を得たのち、
１５００℃の窒素雰囲気で５時間焼成して窒化アルミニ
ウム粉末を得た。(Example 1) 0.3 parts of urea was added to 1 part by weight of basic aluminum lactate.
An aqueous solution was prepared by mixing parts by weight. After evaporating this aqueous solution and drying at 150°C to obtain a mixed powder,
The aluminum nitride powder was obtained by firing in a nitrogen atmosphere at 1500° C. for 5 hours.
なお、この窒化アルミニウム粉末は、純度９８％以上、
平均粒径が約２μｍであった。Note that this aluminum nitride powder has a purity of 98% or more,
The average particle size was about 2 μm.
（実施例２）
塩基性乳酸アルミニウム１重量部に対し、Ｄ−グルコー
スを０．３重量部となるように混合した水溶液を作った
。この水溶液から水を蒸発させ、１５０℃で乾燥して混
合粉末を得たのち、１６００℃の窒素雰囲気中で５時間
焼成して窒化アルミニウム粉末を得た。(Example 2) An aqueous solution was prepared by mixing 0.3 parts by weight of D-glucose with 1 part by weight of basic aluminum lactate. Water was evaporated from this aqueous solution and the mixture was dried at 150° C. to obtain a mixed powder, which was then calcined in a nitrogen atmosphere at 1600° C. for 5 hours to obtain aluminum nitride powder.
なお、この窒化アルミニウム粉末は、純度９８％以上、
平均粒径が約２．５μｍであった。Note that this aluminum nitride powder has a purity of 98% or more,
The average particle size was approximately 2.5 μm.
（実施例３）
塩基性乳酸アルミニウム１重量部に対してメラミン０．
２重量部となるように混合した水溶液を作った。(Example 3) Melamine: 0.00 parts by weight of basic aluminum lactate.
An aqueous solution was prepared by mixing 2 parts by weight.
この水溶液を蒸発させ１５０℃で乾燥して混合粉末を得
たのち、１５００℃の窒素雰囲気中で５時間焼成して窒
化アルミニウム粉末を得た。This aqueous solution was evaporated and dried at 150°C to obtain a mixed powder, which was then fired in a nitrogen atmosphere at 1500°C for 5 hours to obtain aluminum nitride powder.
なお、この窒化アルミニウム粉末は、純度が９８％以上
、平均粒径が２μｍ以下であった。Note that this aluminum nitride powder had a purity of 98% or more and an average particle size of 2 μm or less.
（実施例４）
塩基性乳酸アルミニウム１重量部に対して、Ｄ−グルコ
ース０．２重量部、尿素０．２重量部となるように混合
した水溶液を作った。この水溶液を蒸発させ、１５０℃
で乾燥して混合粉末を得たのち、１４５０℃で１０時間
窒素雰囲気中で焼成して窒化アルミニウム粉末を得た。(Example 4) An aqueous solution was prepared by mixing 1 part by weight of basic aluminum lactate with 0.2 part by weight of D-glucose and 0.2 part by weight of urea. This aqueous solution was evaporated and heated to 150°C.
After drying to obtain a mixed powder, the mixture was fired at 1450° C. for 10 hours in a nitrogen atmosphere to obtain aluminum nitride powder.
なお、この窒化アルミニウム粉末は、純度９８％以上、
平均粒径が２μｍ以下であった。Note that this aluminum nitride powder has a purity of 98% or more,
The average particle size was 2 μm or less.
（実施例５）
塩基性乳酸アルミニウム１重量部に対し、メチルセルロ
ース（信越化学工業■製ＳＭタイプ）が０、１重量部、
尿素０．２重量部となるように混合した水溶液を作った
。この水溶液を蒸発させ１５０℃で乾燥して混合粉末を
得たのち、１５００℃の窒素雰囲気中で３時間焼成して
窒化アルミニウム粉末を得た。(Example 5) Methyl cellulose (SM type manufactured by Shin-Etsu Chemical Co., Ltd.) was added to 1 part by weight of basic aluminum lactate,
An aqueous solution containing 0.2 parts by weight of urea was prepared. This aqueous solution was evaporated and dried at 150°C to obtain a mixed powder, which was then calcined for 3 hours in a nitrogen atmosphere at 1500°C to obtain aluminum nitride powder.
なお、この窒化アルミニウム粉末は、純度９８％以上、
平均粒径が２μｍであった。Note that this aluminum nitride powder has a purity of 98% or more,
The average particle size was 2 μm.
（実施例６）
塩基性乳酸アルミニウム１重量部に対しケン化度９０％
のポリビニルアルコールが０．１重量部、メラミンが０
．３重量部となるように混合した水溶液を作った。この
水溶液を蒸発させ１５０℃で乾燥して混合粉末を得たの
ち、１５００℃の窒素雰囲気中で５時間焼成して窒化ア
ルミニウム粉末を得た。(Example 6) Degree of saponification is 90% for 1 part by weight of basic aluminum lactate
0.1 part by weight of polyvinyl alcohol, 0 part of melamine
．． An aqueous solution was prepared by mixing 3 parts by weight. This aqueous solution was evaporated and dried at 150°C to obtain a mixed powder, which was then fired in a nitrogen atmosphere at 1500°C for 5 hours to obtain aluminum nitride powder.
なお、この窒化アルミニウム粉末は、純度９８％以上、
平均粒径が２μｍであった。Note that this aluminum nitride powder has a purity of 98% or more,
The average particle size was 2 μm.
以上、実施例１〜６で使用した塩基性乳酸アルミニウム
はＡ１１ｔ０３含量３７％、乳酸含量５６％のものであ
る。The basic aluminum lactate used in Examples 1 to 6 has an A11t03 content of 37% and a lactic acid content of 56%.
また、実施例１〜５で得た窒化アルミニウム粉末に対し
て焼結補助剤としてのｙ、ｏ、を３重量％混合し、成形
後、１６５０℃の窒素雰囲気中で３時間焼成することに
よって、密度９８％以上の焼結窒化アルミニウムセラミ
ックを得ることができた。In addition, 3% by weight of y and o as sintering aids were mixed with the aluminum nitride powder obtained in Examples 1 to 5, and after molding, the mixture was baked in a nitrogen atmosphere at 1650°C for 3 hours. A sintered aluminum nitride ceramic having a density of 98% or more could be obtained.
この発明にかかる窒化アルミニウム粉末の製法は上記実
施例の範囲に限らない。The method for producing aluminum nitride powder according to the present invention is not limited to the scope of the above embodiments.
なお、通常窒化アルミニウムの焼結時には、焼結性を向
上させるために焼結補助剤として、酸化インドリウムな
どの希土類金属酸化物、酸化カルシウムなどのアルカリ
土類金属酸化物を添加するのであるが、混合水溶液を作
る際に、塩化イツトリウムや硝酸カルシウムなどを同時
にこの混合水溶液中に添加するようにすれば、焼結補助
剤が均一に分散された窒化アルミニウム粉末をこの製法
によって得ることができる。When aluminum nitride is sintered, rare earth metal oxides such as indium oxide and alkaline earth metal oxides such as calcium oxide are usually added as sintering aids to improve sinterability. By simultaneously adding yttrium chloride, calcium nitrate, etc. to the mixed aqueous solution when preparing the mixed aqueous solution, aluminum nitride powder in which the sintering aid is uniformly dispersed can be obtained by this manufacturing method.
この発明の窒化アルミニウム粉末の製法は、以上のよう
に、塩基性乳酸アルミニウムと、水溶性炭素含有化合物
または／および水溶性窒素含有化合物を水溶液として混
合し、前記水溶液から前記化合物の混合粉末を得、この
混合粉末を窒素ガスを含む非酸化性雰囲気中で焼成して
窒化アルミニウム粉末を得るので、高純度で微粒子の易
焼結性を有する窒化アルミニウム粉末を安価で得ること
ができる。As described above, the method for producing aluminum nitride powder of the present invention involves mixing basic aluminum lactate with a water-soluble carbon-containing compound and/or a water-soluble nitrogen-containing compound as an aqueous solution, and obtaining a mixed powder of the compound from the aqueous solution. Since aluminum nitride powder is obtained by firing this mixed powder in a non-oxidizing atmosphere containing nitrogen gas, it is possible to obtain aluminum nitride powder with high purity and easy sinterability in the form of fine particles at a low cost.
Claims (2)
物または／および水溶性窒素含有化合物の水溶液より得
られた混合粉末を、窒素ガスを含有する非酸化性雰囲気
中で焼成することを特徴とする窒化アルミニウム粉末の
製法。(1) A mixed powder obtained from an aqueous solution of basic aluminum lactate and a water-soluble carbon-containing compound or/and a water-soluble nitrogen-containing compound is fired in a non-oxidizing atmosphere containing nitrogen gas. Production method of aluminum nitride powder.
アンモニウムの１種もしくは２種以上である特許請求の
範囲第１項記載の窒化アルミニウム粉末の製法。(2) The method for producing aluminum nitride powder according to claim 1, wherein the water-soluble nitrogen-containing compound is one or more of urea, melamine, and ammonium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4176987A JPS63210003A (en) | 1987-02-24 | 1987-02-24 | Production of aluminum nitride powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4176987A JPS63210003A (en) | 1987-02-24 | 1987-02-24 | Production of aluminum nitride powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63210003A true JPS63210003A (en) | 1988-08-31 |
| JPH0466804B2 JPH0466804B2 (en) | 1992-10-26 |
Family
ID=12617603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4176987A Granted JPS63210003A (en) | 1987-02-24 | 1987-02-24 | Production of aluminum nitride powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63210003A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6456307A (en) * | 1987-08-26 | 1989-03-03 | Matsushita Electric Works Ltd | Production of aluminum nitride powder |
| JPH01141810A (en) * | 1987-11-28 | 1989-06-02 | Matsushita Electric Works Ltd | Production of aluminum nitride |
| KR20000074574A (en) * | 1999-05-21 | 2000-12-15 | 오근호 | Mono- and Di-saccharides for Environmental Friendly Plastic Alumina Slurries with High Alumina Concentration |
| CN100368284C (en) * | 2005-12-02 | 2008-02-13 | 中国科学院物理研究所 | Method for synthesizing nitride using metal oxide |
-
1987
- 1987-02-24 JP JP4176987A patent/JPS63210003A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6456307A (en) * | 1987-08-26 | 1989-03-03 | Matsushita Electric Works Ltd | Production of aluminum nitride powder |
| JPH01141810A (en) * | 1987-11-28 | 1989-06-02 | Matsushita Electric Works Ltd | Production of aluminum nitride |
| KR20000074574A (en) * | 1999-05-21 | 2000-12-15 | 오근호 | Mono- and Di-saccharides for Environmental Friendly Plastic Alumina Slurries with High Alumina Concentration |
| CN100368284C (en) * | 2005-12-02 | 2008-02-13 | 中国科学院物理研究所 | Method for synthesizing nitride using metal oxide |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0466804B2 (en) | 1992-10-26 |
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