TOP > 外国特許検索 > RUTHENIUM OXIDE AND METHOD FOR PRODUCING RUTHENIUM OXIDE

RUTHENIUM OXIDE AND METHOD FOR PRODUCING RUTHENIUM OXIDE

外国特許コード F180009331
整理番号 S2016-0351-C0
掲載日 2018年2月27日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2017JP004948
国際公開番号 WO 2017138643
国際出願日 平成29年2月10日(2017.2.10)
国際公開日 平成29年8月17日(2017.8.17)
優先権データ
  • 特願2016-024783 (2016.2.12) JP
発明の名称 (英語) RUTHENIUM OXIDE AND METHOD FOR PRODUCING RUTHENIUM OXIDE
発明の概要(英語) [Problem] To provide a ruthenium compound which shows large negative thermal expansion.
[Solution] A ruthenium oxide of the present disclosure is represented by general formula (1) Ca2-xRxRu1-yMyO4+z (in formula (1), R represents at least one element selected from among alkaline earth metals and rare earth elements; M represents at least one element selected from among Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn and Ga; 0 ≤ x
従来技術、競合技術の概要(英語) BACKGROUND ART
In general, material thermal expansion with the temperature increase has been known. Therefore, the temperature change occurs at the device (for example an electronic device and a precision equipment) for the parts used, various problems by their thermal expansion occurs.
Therefore, so far, various kinds of thermal expansion by temperature and a method for the inhibition studies, a positive thermal expansion material and combining the negative thermal expansion material and the like are available.
Negative thermal expansion materials include, for example, Patent Document 1 is, in the temperature range of - 1x10-40 °C.-100 ° C.-6 /° C--12x10-6 /°C or ceramics having a negative linear expansion coefficient of the glass-ceramics described can be employed. And, as such a ceramic or glass-ceramics, β - β - eucryptite solid solution or quartz solid solution as a main crystal and ceramics or glass ceramics, or Zr and Hf containing at least one of tungstate or tungstic acid salt phosphoric acid as a main crystal of the polycrystalline ceramics listed in the table.
In addition, Patent Document 2 is, for example Mn3 Zn1-x Gex N(x=0.3-0.5) represented by reverse a perovskite manganese nitride, from 51°C in the temperature range of 104°C - 30x10-6 /linear expansion coefficients in the negative °C is described. Then, these containing a nitride of a variety of low thermal expansion material or a negative thermal expansion material, in addition, various devices and their nitrides are quoted is a method for thermal expansion.
However, known to date with the negative thermal expansion materials is, the negative thermal expansion have a small degree, the operation of the negative thermal expansion temperature range is narrow, and has disadvantages like, has been extremely limited in their application. Therefore, the actual use of conventional negative thermal expansion material when necessary depending on various conditions, an applicable range is narrow, it can be said that thermal expansion is not sufficient as an inhibitor.
In addition, so far, chemical formula Ca2 RuO4 layered perovskite type crystal structure represented by the ruthenium oxide had, at approximately 90°C, as temperature changes from a high temperature metallic (high temperature phase L) insulator (low temperature phase S) when phase to, the low-temperature phase to have a larger volume than the higher temperature phase has been known (non-patent document 1-5). For example, Ca2 RuO4 precise from structure analysis, from 127°C to -173°C as the total amount of lowering of the temperature expansion of the volume change Δ V/V is approximately 1% (non-patent document 3) reported in. Here, the total amount Δ V/V is the volume change, the negative thermal expansion temperature range Tmin and Tmax from, in which case the Vmin Tmin, Tmax when Vmax and in which case, represented by (Vmin-Vmax) /Vmax amount. Is substituted with a part of the Ru Ca Cr2 Ru0.933 Cr0.067 O4 there are a total Δ V/V - 0.9% sequential transitional temperature drops due to volume expansion (non-patent document 4) is, in addition Ca2 Ru0.90 Mn0.10 O4 in - 143 °C.-127 degree Celsius of temperature - 10x10-6 /°C (Δ V/V - 0.8%) of the negative thermal expansion (non-patent article 5) is reported.
However, these phenomena, the next sharp 1 generally a phase transition within a narrow transition width of 1°C, the total amount exceeds 1% volume change is not such a large negative thermal expansion, for reasons such as, industrial thermal expansion as the inhibitor it is a good function was.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • NAGOYA UNIVERSITY
  • 発明者(英語)
  • TAKENAKA Koshi
  • OKAMOTO Yoshihiko
  • SHINODA Tsubasa
  • INOUE Naruhiro
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
名古屋大学の公開特許情報を掲載しています。ご関心のある案件がございましたら、下記まで電子メールでご連絡ください。

PAGE TOP

close
close
close
close
close
close