JP6589975B2 - 二酸化バナジウム - Google Patents
二酸化バナジウム Download PDFInfo
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Description
他の原子がWである場合、バナジウム、Tiおよび他の原子の合計100モル部に対して、他の原子の含有モル部が、0モル部より大きく5モル部以下であり、
他の原子がTa、MoまたはNbである場合、バナジウム、Tiおよび他の原子の合計100モル部に対して、他の原子の含有モル部が、0モル部より大きく15モル部以下であり、
バナジウム、Tiおよび他の原子の合計100モル部に対して、チタンの含有モル部は、2モル部以上30モル部以下であることを特徴とする、二酸化バナジウムが提供される。
V1−x−yTixMyO2
[式中、Mは、W、Ta、MoまたはNbであり、
xは0.02以上0.3以下であり、
yは0以上であって、
MがWである場合、yは0.05以下であり、
MがTa、MoまたはNbである場合、yは0.15以下である。]
で表される二酸化バナジウムが提供される。
V1−x−yTixMyO2
[式中、Mは、W、Ta、MoまたはNbであり、
xは0.02以上0.3以下であり、
yは0以上であって、
MがWである場合、yは0.05以下であり、
MがTa、MoまたはNbである場合、yは0.15以下である。]
で表される二酸化バナジウムであり得る。なお、Mは「他の原子」に相当し、必須成分ではなく、Mの含有モル部は0であってもよい。この場合、上記式で表される化合物はチタンのみがドープされた二酸化バナジウムとなる。
・バナジウム原料
二酸化バナジウム(VO2。Dalian Bolong New Materials社製)
・添加(ドープ)原料
酸化チタン(TiO2)
酸化タングステン(WO3)
酸化タンタル(Ta2O5)
酸化ニオブ(Nb2O5)
酸化モリブデン(MoO3)
作製した試料の初期の潜熱量を、DSC(示差走査熱量測定)法により、窒素雰囲気中、昇温速度:10K/分、0℃から100℃、そして0℃へと掃引して、昇温時の吸熱量を潜熱量とした。代表して試料番号2のDSC測定結果を図1に示す。
さらに、試料を代表して、試料番号2および10の粒子の耐湿試験前後の状態を、走査型電子顕微鏡で観察した。試料番号2の結果を図3(耐湿試験前)および図4(耐湿試験後)に、試料番号10の結果を図5(耐湿試験前)および図6(耐湿試験後)に示す。
なお、本明細書において、便宜上、化学式における酸素量を2(バナジウム、Tiおよび他の原子Mの合計1モル部に対して、酸素2モル部)として説明しているが、結晶構造的に安定に形成できた二酸化バナジウムであれば、2から若干のずれが許容される。この若干のずれは、化学分析結果より求められる酸素量からは、VOxにおいて、おおよそ1.9〜2.1である。この場合であっても、本発明と同様の作用効果を発揮し、耐湿性が高く、吸熱性に優れた二酸化バナジウムを得ることが可能である。
Claims (11)
- Tiがドープされた二酸化バナジウムまたはさらにW、Ta、MoおよびNbからなる群から選択される他の原子がドープされた二酸化バナジウムであって、
他の原子がWである場合、バナジウム、Tiおよび他の原子の合計100モル部に対して、他の原子の含有モル部が、0モル部より大きく5モル部以下であり、
他の原子がTa、MoまたはNbである場合、バナジウム、Tiおよび他の原子の合計100モル部に対して、他の原子の含有モル部が、0モル部より大きく15モル部以下であり、
バナジウム、Tiおよび他の原子の合計100モル部に対して、チタンの含有モル部は、2モル部以上30モル部以下であることを特徴とする、二酸化バナジウム、ならびに
樹脂およびゴムから選択されるバインダーを含んで成る冷却デバイス。 - Tiがドープされた二酸化バナジウムまたはさらにW、Ta、MoおよびNbからなる群から選択される他の原子がドープされた二酸化バナジウムであって、
他の原子がWである場合、バナジウム、Tiおよび他の原子の合計100モル部に対して、他の原子の含有モル部が、0モル部より大きく5モル部以下であり、
他の原子がTa、MoまたはNbである場合、バナジウム、Tiおよび他の原子の合計100モル部に対して、他の原子の含有モル部が、0モル部より大きく15モル部以下であり、
バナジウム、Tiおよび他の原子の合計100モル部に対して、チタンの含有モル部は、2モル部以上30モル部以下であることを特徴とする、二酸化バナジウム、および
流動性を有する樹脂を含み、ペースト状である冷却デバイス。 - Tiがドープされた二酸化バナジウムまたはさらにW、Ta、MoおよびNbからなる群から選択される他の原子がドープされた二酸化バナジウムであって、
他の原子がWである場合、バナジウム、Tiおよび他の原子の合計100モル部に対して、他の原子の含有モル部が、0モル部より大きく5モル部以下であり、
他の原子がTa、MoまたはNbである場合、バナジウム、Tiおよび他の原子の合計100モル部に対して、他の原子の含有モル部が、0モル部より大きく15モル部以下であり、
バナジウム、Tiおよび他の原子の合計100モル部に対して、チタンの含有モル部は、2モル部以上30モル部以下であることを特徴とする、二酸化バナジウムを含み、
該二酸化バナジウムは、金属箔またはシートで、ラミネートされるか、または包まれている、冷却デバイス。 - 前記二酸化バナジウムにおいて、バナジウム、Tiおよび他の原子の合計100モル部に対して、チタンの含有モル部が、5モル部以上10モル部以下であることを特徴とする、請求項1〜3のいずれかに記載の冷却デバイス。
- 式:V 1−x−y Ti x M y O 2
[式中、Mは、W、Ta、MoまたはNbであり、
xは0.02以上0.3以下であり、
yは0以上であって、
MがWである場合、yは0.05以下であり、
MがTa、MoまたはNbである場合、yは0.15以下である。]
で表される二酸化バナジウム、ならびに
樹脂およびゴムから選択されるバインダーを含む、冷却デバイス。 - 式:V 1−x−y Ti x M y O 2
[式中、Mは、W、Ta、MoまたはNbであり、
xは0.02以上0.3以下であり、
yは0以上であって、
MがWである場合、yは0.05以下であり、
MがTa、MoまたはNbである場合、yは0.15以下である。]
で表される二酸化バナジウム、ならびに
流動性を有する樹脂を含み、ペースト状である冷却デバイス。 - 式:V 1−x−y Ti x M y O 2
[式中、Mは、W、Ta、MoまたはNbであり、
xは0.02以上0.3以下であり、
yは0以上であって、
MがWである場合、yは0.05以下であり、
MがTa、MoまたはNbである場合、yは0.15以下である。]
で表される二酸化バナジウムを含み、
該二酸化バナジウムは、金属箔またはシートで、ラミネートされるか、または包まれている、冷却デバイス。 - xが0.05以上0.1以下であることを特徴とする、請求項5〜7のいずれかに記載の冷却デバイス。
- さらに、保護カバー、熱伝導性部、絶縁性シート、または電子機器に設置するための部材を含む、請求項1〜8のいずれかに記載の冷却デバイス。
- 請求項1〜9のいずれかに記載の冷却デバイスを有して成る電子部品。
- 請求項1〜9のいずれかに記載の冷却デバイスまたは請求項10に記載の電子部品を有して成る電子機器。
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