JP2007506864A - 金属蒸発用容器及びその製造方法 - Google Patents
金属蒸発用容器及びその製造方法 Download PDFInfo
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Abstract
【選択図】 なし
Description
本発明の一実施形態では、耐火性組成物は、耐火性ホウ化物、窒化ホウ素、及び酸化物、窒化物、炭化物又はこれらの混合物の1種から選択される希土類金属化合物約0.10〜10wt%から実質的になる。
一実施形態では、BN、TiB2、希土類金属酸化物粉末並びに任意のAlN及び/又はCaO、Al2O3及びTiO2の粉末混合物を調製するため、例えば高剪断ブレンディング、ボールミリング、アトリッターミリング、ジェットミリングなどの混合手段を用いて均質混合物を得る。混合は、湿潤又は乾燥条件下、例えば、空気中又はアルゴンや窒素のような不活性ガス中或いは水中又はアセトンやメタノールやイソプロパノールのような有機溶媒中で実施できる。次いで、乾式プレス成形、常温静水圧圧縮(CIP)成形、射出成形などの成形手段により、混合物粉末を成形して圧粉体を得る。
例1〜5では、下記の分析結果を有する粉末を出発原料として使用すると共に、希土類金属酸化物としてY2O3を使用する。例5はMontgomeryの参考文献のグレードMo−21Pからなり、したがって「Montgomery」試料という。
約95〜99%の純度を有する酸化ランタン粉末を代わりに使用する点を除き、例1〜5を繰り返す。実験の結果は例1〜5で得られた結果と同様であるが、本発明の例でのアルミニウム浸透は先行技術であるMontgomeryの例に比べて極めてわずか又は顕著に少ない。
これらの例では、表2に示す組成物からなるビレットを形成し、次いで電気抵抗率を測定すると共に湿潤性試験を行う。表2中のすべての成分はwt%で表されている。
例20〜22
これらの例では、蒸着ボートを形成し、蒸着フィルムの形成に際して試験する。本発明の組成物からなるボートを、市場で商業的に入手できる金属ボート(即ち、GE Advanced Ceramics社(クリーブランド、米国オハイオ州)から入手できる「Classic」ボート)と比較する。例20では、「二成分型ボート」、即ち主成分としてTiB2及びBNを含む組成物として知られるClassicボート組成物を使用する。例21は、GE Advanced Ceramics社から「AC−6000」として商業的に入手できる「三成分型ボート」組成物を表す。三成分型組成物は、通例、主成分としてTiB2、BN及びAlNを含む組成物として定義される。例22は本発明の実施例である。すべての成分はwt%で表されている。
「The Effects of Boat and Wire Parameters on Boat Life and Coating Quality in Vacuum Metallization of an OPP Web」と題するE.Josephson et al.の論文(1995 SVC Conference Proceedings)では、二成分型ボート(BN/TiB2−例20のようなタイプのボート)の有効ボート寿命を三成分型ボート(BN/AlN/TiB2−例21のようなタイプのボート)の寿命と比較した。著者は、「結果」の章で、「ボート寿命に関する2つの伝統的な尺度を用いたところ、二相型ボートは長い寿命を示した。ボート組成物は、ロール数については90%の信頼度で統計的に有意であり、蒸着直線フィートについては75%の信頼度で統計的に有意であった。」と述べている。さらに、「ボートの目視検査によれば、二相型ボートは少ない堆積物及び良好な耐食性を示した。」とも述べている。
Claims (15)
- 金属蒸発用の耐火性容器であって、
窒化ホウ素約45〜65wt%、
耐火性ホウ化物約35〜65wt%、並びに
酸化物、炭化物、窒化物及びこれらの混合物の1種から選択される希土類金属化合物約0.10〜10wt%
から実質的になる耐火性容器。 - 希土類金属化合物が、酸化イットリウム、酸化ランタン及びこれらの混合物からなる群から選択される、請求項1記載の耐火性容器。
- 希土類金属化合物が、95%以上の純度及び約15ミクロン以下の平均粒度を有する酸化イットリウムである、請求項1又は請求項2記載の耐火性容器。
- さらに、約15ミクロン以下の平均粒度を有する窒化アルミニウム又は窒化ケイ素10wt%以下を含む、請求項1乃至請求項3のいずれか1項記載の耐火性容器。
- さらに、酸化カルシウム、酸化アルミニウム、酸化マグネシウム及び二酸化チタンの1種以上を含む、請求項1乃至請求項4のいずれか1項記載の耐火性容器。
- さらに、YAG(Al5Y3O12)、YAP(AlYO3)、YAM(Al2Y4O7)及びこれらの組合せの1種から選択される、請求項1乃至請求項5のいずれか1項記載の耐火性容器。
- さらに、元素Al、Si、Ti、Fe、Co、Ni及びこれらの混合物の炭化物及び窒化物からなる群から選択される元素又は化合物0.2〜5wt%を含む、請求項1乃至請求項6のいずれか1項記載の耐火性容器。
- 金属蒸発用耐火性ボートの有効寿命を向上させる方法であって、窒化ホウ素45〜65wt%及び耐火性ホウ化物35〜65wt%から実質的になる組成物に、酸化物、窒化物又は炭化物或いはこれらの混合物である希土類金属化合物約0.10〜10wt%をドープすることを含んでなる方法。
- さらに、元素Al、Si、Ti、Fe、Co、Ni及びこれらの混合物の炭化物及び窒化物からなる群から選択される元素又は化合物0.2〜5wt%を前記組成物にドープする段階を含む、請求項8記載の方法。
- 金属蒸発用耐火性ボートの製造方法であって、
窒化ホウ素45〜65wt%、耐火性ホウ化物約35〜65wt%、及び酸化物、炭化物又は窒化物或いはこれらの混合物である希土類金属化合物約0.10〜10wt%から実質的になる均質粉末混合物を用いて成形品を形成し、前記成形品から耐火性ボートを形成する
段階を含んでなる方法。 - 希土類金属化合物が、95%以上の純度及び約15ミクロン以下の平均粒度を有する酸化イットリウムである、請求項10記載の方法。
- 前記成形品がさらに、約15ミクロン以下の平均粒度を有する窒化アルミニウム又は窒化ケイ素10wt%以下を含む、請求項10又は請求項11記載の方法。
- 前記成形品がさらに、酸化カルシウム、酸化アルミニウム、酸化マグネシウム及び二酸化チタンの1種以上を含む、請求項10乃至請求項12のいずれか1項記載の方法。
- 前記成形品がさらに、YAG(Al5Y3O12)、YAP(AlYO3)、YAM(Al2Y4O7)及びこれらの組合せの1種から選択される、請求項10乃至請求項13のいずれか1項記載の方法。
- 前記成形品がさらに、元素Al、Si、Ti、Fe、Co、Ni及びこれらの混合物の炭化物及び窒化物からなる群から選択される元素又は化合物0.2〜5wt%を含む、請求項10乃至請求項14のいずれか1項記載の方法。
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WO2017209061A1 (ja) * | 2016-05-31 | 2017-12-07 | デンカ株式会社 | 耐食性に優れたbn焼結体 |
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KR100759178B1 (ko) * | 2003-12-11 | 2007-09-14 | 덴끼 가가꾸 고교 가부시키가이샤 | 세라믹스 소결체, 세라믹스 소결체의 제조 방법, 금속 증착용 발열체 |
US7494616B2 (en) * | 2005-11-04 | 2009-02-24 | Momentive Performance Materials Inc. | Container for evaporation of metal and method to manufacture thereof |
US8034153B2 (en) * | 2005-12-22 | 2011-10-11 | Momentive Performances Materials, Inc. | Wear resistant low friction coating composition, coated components, and method for coating thereof |
CN104602375A (zh) * | 2014-12-17 | 2015-05-06 | 内蒙古坤瑞玻璃工贸有限公司 | 热敏陶瓷电加热玻璃及其制备方法 |
CN104895461A (zh) * | 2015-05-06 | 2015-09-09 | 内蒙古坤瑞玻璃工贸有限公司 | 一种高效节能智能化电加热中空玻璃及其制备方法 |
CN107746263A (zh) * | 2017-11-15 | 2018-03-02 | 石婷 | 一种复相陶瓷蒸发舟及其制造方法 |
CN115403043B (zh) * | 2022-08-19 | 2023-07-11 | 四川大学 | 一种稀土元素碳化物、氮化物或碳氮化物粉末的制备方法 |
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- 2004-09-24 CN CNA2004800275653A patent/CN1856590A/zh active Pending
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