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PROCESS FOR PRODUCING AMORPHOUS SPRAYED COATING CONTAINING α-Fe NANOCRYSTALS DISPERSED THEREIN

外国特許コード F140007867
整理番号 S2014-0071-N0
掲載日 2014年5月15日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2013JP061459
国際公開番号 WO 2013157596
国際出願日 平成25年4月18日(2013.4.18)
国際公開日 平成25年10月24日(2013.10.24)
優先権データ
  • 特願2012-095511 (2012.4.19) JP
発明の名称 (英語) PROCESS FOR PRODUCING AMORPHOUS SPRAYED COATING CONTAINING α-Fe NANOCRYSTALS DISPERSED THEREIN
発明の概要(英語) The present invention provides a process for producing a sprayed coating which contains α-Fe nanocrystals dispersed therein. This process includes a thermal spraying step for subjecting an alloy powder which consists of an amorphous phase having a nano-hetero structure such that α-Fe nanocrystals having particle diameters of 0.3nm or more and a mean particle diameter of less than 10nm are dispersed and which has a first crystallization temperature (Tx1) and a second crystallization temperature (Tx2) and further has an Fe content of 74at% or more to collision with the surface of a substrate by a thermal spray method using a plasma jet or a combustion flame to form an amorphous sprayed coating which contains α-Fe nanocrystals dispersed therein. The process is characterized in that, in the thermal spraying step, the collision of the alloy powder with the surface of the substrate is conducted at an internal temperature of the particles in flight of Tx2 or lower and at a flying speed of the particles of 300m/s or more to form an amorphous sprayed coating wherein α-Fe nanocrystals having particle diameters of 0.3nm or more and a mean particle diameter of 30nm or less are dispersed.
  • 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
  • TOPY KOGYO KABUSHIKI KAISHA
  • TOHOKU UNIVERSITY
  • 発明者(英語)
  • SHIMIZU YUTA
  • MURATA AKITO
  • NAKASHIMA KOJI
  • ISHIKAWA TOMOHITO
  • MAKINO AKIHIRO
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 DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IS JP KE KG KM KN KP KR KZ LA LC LK LR LS LT 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 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 ML MR NE SN TD TG
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