EP2947166A1 - Élément décoratif - Google Patents

Élément décoratif Download PDF

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Publication number
EP2947166A1
EP2947166A1 EP13871905.9A EP13871905A EP2947166A1 EP 2947166 A1 EP2947166 A1 EP 2947166A1 EP 13871905 A EP13871905 A EP 13871905A EP 2947166 A1 EP2947166 A1 EP 2947166A1
Authority
EP
European Patent Office
Prior art keywords
decoration member
black
less
metallic luster
surface roughness
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.)
Withdrawn
Application number
EP13871905.9A
Other languages
German (de)
English (en)
Other versions
EP2947166A4 (fr
Inventor
Susumu Shibata
Osamu Takahashi
Takayoshi MIYAHARA
Yukio Okuyama
Takayuki Takeuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Adamant Namiki Precision Jewel Co Ltd
Original Assignee
Namiki Precision Jewel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Namiki Precision Jewel Co Ltd filed Critical Namiki Precision Jewel Co Ltd
Publication of EP2947166A1 publication Critical patent/EP2947166A1/fr
Publication of EP2947166A4 publication Critical patent/EP2947166A4/fr
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/04—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbonitrides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/16—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on nitrides
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C27/00—Making jewellery or other personal adornments
    • A44C27/001—Materials for manufacturing jewellery
    • A44C27/002—Metallic materials
    • A44C27/003—Metallic alloys

Definitions

  • the present invention relates to a decoration member exhibiting metallic luster, which is suitable for a decoration member used for a decoration member for accessories, a decoration member for watches, a decoration member for building materials, a decoration member for kitchen members, a decoration member for home appliances, a decoration member for automobiles, etc., and particularly to a decoration member for watches, which provides beautiful metallic luster suitably applied to a watch case and a band piece.
  • black-based decoration members for watches have conventionally been popular and black-based decoration members for watches have recently been in fashion.
  • the black-based decoration members In contrast to many decoration members having the chromatic colors, the black-based decoration members have traditionally been used as the one having formal color and highly evaluated for the simple but sophisticated appearance.
  • One kind of the black-based members has the metallic luster obtained by making a certain metal surface into a mirror surface, which is popular for its tone of color and metallic texture.
  • Patent Document 1 has disclosed the black and white single-color cemented carbide mainly containing WC, TiC, or NbC as the black and white single-color decoration member.
  • Patent Document 2 has disclosed the article for decoration, which mainly contains black zirconia.
  • black zirconia 3 to 70 wt% is the matrix of at least one kind of stabilized zirconia selected from the group consisting of yttrium oxide, magnesium oxide, cerium oxide, and calcium oxide, 25 to 50 wt% is cobalt oxide, and the rest is the powder of cobalt oxide and iron oxide or the powder of spinel type CoFe 2 O 4 .
  • Patent Document 3 has disclosed the black zirconia ceramic containing a colorant including 40 to 70 mass% of cobalt oxide (at least one kind of CoO, Co 2 O 3 , and Co 3 O 4 ), iron oxide (Fe 2 O 3 ), and chromium oxide (Cr 2 O 3 ).
  • the iron oxide is contained by 15 to 30 mass% and the cobalt oxide is contained by 40 to 70 mass%, and also disclosed the decoration member using the same.
  • the cemented carbide disclosed in Patent Document 1 has the monochromatic and gold-based metallic luster owing to the hard metal; however, since the cemented carbide is employed, the density is as large as 12.8 to 14.3 g/m 3 , which is too heavy for the user to wear for a long time.
  • the article for decoration mainly containing black zirconia according to Patent Document 2 has the mechanical characteristics that zirconia originally has, such as high strength and high toughness, and has the density as low as 6.0 g/cm 3 .
  • the tone of color is a little bluish black and the color is black derived from zirconia ceramic, which fails to achieve the black metallic luster without the use of metal.
  • the black zirconia ceramic according to Patent Document 3 exhibits the black tone of color called extreme black and has a density that can be set in the range of 5.9 g/cm 3 to 6.1 g/cm 3 ; however, since the ceramic is made without the use of metal, the black-based metallic luster and the metallic texture cannot be reproduced. Further, since the material is zirconia, the Vickers hardness is lower than 1450 Hv, which is the Vickers hardness of cemented carbide.
  • the present invention has been made in view of the above, and has an object to provide a decoration member with abrasion resistance as high as cemented carbide and light weight, and enabling a user to wear the member for a long time, and moreover enabling a user to feel a high-grade sense and aesthetic satisfaction with the black-based tone of color derived from metal and the smooth texture unique to metal.
  • a decoration member according to the present invention includes a hard phase containing at least two or more of TiCN, TiC, TiN, and MoC 2 in a proportion of 70 mass% or more and 97 mass% or less with the remainder constituted by a binder phase and inevitable impurities.
  • the decoration member has light weight, excellent abrasion resistance, and a surface roughness Ra of 0.008 ⁇ m or less.
  • the above decoration member according to the present invention has a surface roughness of 0.004 ⁇ m or less and Rz of 0.02 ⁇ m or less.
  • the decoration member according to the present invention includes a hard phase containing at least two or more of TiCN, TiC, TiN, and MoC 2 in a proportion of 70 mass% or more and 97 mass% or less with the remainder constituted by a binder phase and inevitable impurities.
  • the decoration member has light weight, excellent abrasion resistance, and a surface roughness Ra of 0.008 ⁇ m or less. Because of having at least two or more of TiCN, TiC, TiN, and MoC 2 , the apparent density can be made as low as 6.1 g/cm 3 or less, so that the weight can be as light as or lighter than that of zirconia. For this reason, the user can wear the member for a long time without feeling tired.
  • the decoration member becomes popular in the use for the decoration member for accessories such as a watch case, a band piece, a broach, a neckless, earrings, a ring, a tiepin, a tie tack, a medal, a glass frame, or a button, a decoration article for building materials, such as tiles for a floor, a wall, and a ceiling, or a door knob, a decoration member for kitchen members, such as a spoon or a fork, a decoration member for home appliances, or a decoration member for automobiles, especially for the watch case and the band piece.
  • a decoration member for kitchen members such as a spoon or a fork
  • a decoration member for home appliances such as a decoration member for home appliances
  • a decoration member for automobiles especially for the watch case and the band piece.
  • the mirror surface reflection from the surface of the decoration member is larger than the scattering, so that the white color due to the scattering of the visible light disappears and the black-based metallic luster appears.
  • the deep metallic luster and the smooth texture comfortable to skin, which the decoration member originally has, can be obtained and the high-grade sense, aesthetic satisfaction, and spiritual comfort can be obtained further and it is expected that such a decoration member will become popular in the market.
  • a decoration member according to the present invention includes a hard phase containing at least two or more of TiC, TiCN, TiN, and MoC 2 in a proportion of 70 mass% or more and 97 mass% or less with the remainder constituted by a binder phase and inevitable impurities.
  • the decoration member has light weight, excellent abrasion resistance, and a surface roughness Ra of 0.008 ⁇ m or less.
  • the excellent abrasion resistance refers to the metal surface of the decoration member whose Vickers hardness is 1450 or more.
  • Mainly containing TiC, TiCN, TiN, or MoC 2 makes it possible to achieve the intended Vickers hardness.
  • the light weight refers to the density of the decoration member that is 6.1 g/cm 3 or less.
  • the targeted light density can be achieved by avoiding the heavy materials such as TaC, PbC, and WC whose molecular weights are 192 g, 219 g, and 195 g, respectively.
  • the surface roughness Ra is measured by the laser microscope or the atomic force microscope (Seiko Instruments Inc.. Nanopics 1000).
  • Fig. 1 is a photograph of a surface of a decoration member with a non-mirror surface whose Ra is more than 0.008 ⁇ m
  • Fig. 2 is a photograph of a surface of a decoration member with a mirror surface whose Ra is 0.008 ⁇ m or less.
  • Fig. 1 On the metal surface with the non-mirror surface in Fig. 1 , the luster is dim and blurry, and the surface seems a little white due to the light scattering.
  • Fig. 2 the metal surface with the mirror surface has clear luster and it is understood that Fig. 2 shows the mirror surface exhibiting the black-based metallic luster.
  • the surface roughness Ra is measured by the atomic force microscope (Seiko Instruments Inc., Nanopics 1000) and Rz is measured with the laser microscope.
  • Figs. 3 and 4 each show the magnified area of 40 ⁇ m of the member surface obtained by the atomic force microscope (Seiko Instruments Inc., Nanopics 1000).
  • Fig. 3 shows the surface of the cermet decoration member with a surface roughness Ra of more than 0.004 ⁇ m.
  • Fig. 4 shows the surface of the cermet decoration member with a surface roughness Ra of 0.004 ⁇ m or less.
  • Table 1 contains the values of the surface roughness Ra and Rz of the cermet measured with the laser microscope and the surface state obtained by the actual visual observation.
  • Table 1 Surface state (visual observation) Surface roughness Ra Rt Rz Non-mirror surface 0.031 0.356 0.194 Non-mirror surface 0.018 0.176 0.09 Non-mirror surface 0.013 0.18 0.078 Mirror surface (a little white) 0.004 0.048 0.023 Mirror surface (black-based) 0.002 0.032 0.014
  • specular reflection on the metal surface provides clearer metallic luster as the metal surface has smaller surface roughness.
  • the light scattering on the metal surface is suppressed and while the black-based metallic luster is exhibited, the smooth texture of metal can be reproduced; thus, the high-grade sense is enhanced and the aesthetic satisfaction becomes higher.
  • a cermet decoration member For obtaining a cermet decoration member according to the present invention, a cermet containing TiC/TiCN and MoC 2 by 70 mass% or more and 97 mass% or less with the remainder constituted by a binder phase and inevitable impurities is molded into a shape of a predetermined decoration member.
  • a molding method is not limited in particular, and extrusion molding, injection molding, sintering, polishing, grinding, eiectroforming, electrochemical processing, discharging processing, laser processing, and the like are given.
  • the cermet is molded into a shape of a watch case or a band piece as shown in Figs. 5 and 6 by the use of any of the above methods.
  • the molded watch case or band piece is processed additionally, so that the watch case or band piece has a mirror surface exhibiting the metallic luster.
  • a method of forming a mirror surface with the metallic luster may be, but not limited to, etching, evaporation, plating, polishing, washing, laser processing, ion plating, or the like; in this example, the barrel polishing is employed to form the mirror surface because the mass production is easy and the chamfering and rounding can be performed at one time.
  • the watch case and the band piece according to the example of the present invention has an apparent density of 5.8 g/cm 3 and a Vickers hardness of 1570 Hv, which is as lightweight as zirconia and as hard as or harder than the cemented carbide.
  • a user can wear the watch case and the band piece for a long time without feeling tired, and the watch case and the band piece are scratch-resistant.
  • the watch case and the band piece obtained as above have the mirror surface exhibiting the metallic luster; therefore, the decoration member for a watch that provides the high-grade sense and the aesthetic satisfaction can be provided.
  • the present invention is applicable to not just the decoration member for a watch but also a decoration member for accessories such as a brooch, a neckless, earrings, a ring, a tiepin, a tie tack, a medal, a glass frame, or a button, a decoration article for building materials, such as tiles for a floor, a wall, and a ceiling, or a door knob, a decoration member for kitchen members, such as a spoon or a fork, a decoration member for home appliances, or a decoration member for automobiles.
  • a decoration member for accessories such as a brooch, a neckless, earrings, a ring, a tiepin, a tie tack, a medal, a glass frame, or a button
  • a decoration article for building materials such as tiles for a floor, a wall, and a ceiling, or a door knob
  • a decoration member for kitchen members such as a spoon or a fork
  • a decoration member for home appliances or a decoration member for automobiles
  • the cermet decoration member with excellent abrasion resistance, hardness high enough to resist the scratch, and light weight, thereby enabling a user to wear for a long time and exhibiting the metallic luster is provided.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Adornments (AREA)
  • Ceramic Products (AREA)
  • Manufacturing & Machinery (AREA)
EP13871905.9A 2013-01-16 2013-12-26 Élément décoratif Withdrawn EP2947166A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013005322 2013-01-16
PCT/JP2013/084832 WO2014112314A1 (fr) 2013-01-16 2013-12-26 Élément décoratif

Publications (2)

Publication Number Publication Date
EP2947166A1 true EP2947166A1 (fr) 2015-11-25
EP2947166A4 EP2947166A4 (fr) 2016-11-09

Family

ID=51209416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13871905.9A Withdrawn EP2947166A4 (fr) 2013-01-16 2013-12-26 Élément décoratif

Country Status (5)

Country Link
EP (1) EP2947166A4 (fr)
JP (1) JP6343795B2 (fr)
KR (1) KR20150104116A (fr)
CN (1) CN104884653B (fr)
WO (1) WO2014112314A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107587022B (zh) * 2017-08-10 2019-10-18 东莞华晶粉末冶金有限公司 一种金属陶瓷刀具材料、刀具及制造方法
EP3943630A1 (fr) * 2020-07-22 2022-01-26 The Swatch Group Research and Development Ltd Composant pour pièce d'horlogerie ou de bijouterie en cermet
EP3968098A1 (fr) * 2020-09-09 2022-03-16 The Swatch Group Research and Development Ltd Article decoratif en cermet
EP3974405A1 (fr) * 2020-09-25 2022-03-30 The Swatch Group Research and Development Ltd Article décoratif en ceramique
NL2029278B1 (en) * 2021-09-29 2023-04-06 Champion Link Int Corp Decorative panel and method for producing decorative panel

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS604051A (ja) 1983-06-22 1985-01-10 セイコーエプソン株式会社 装飾部材用多色超硬質合金
JPH0368738A (ja) * 1989-08-07 1991-03-25 Kyocera Corp 硬質焼結合金
JP2722118B2 (ja) * 1989-08-07 1998-03-04 京セラ株式会社 炭化チタン基銀色焼結合金
JPH0551255A (ja) * 1991-08-23 1993-03-02 Toshiba Corp 装飾用セラミツクス部品
CH687680A5 (fr) 1994-04-19 1997-01-31 Asulab Sa Procédé de fabrication d'un article en zircone noire et article décoratif noir obtenu selon ce procédé.
CN1172168A (zh) * 1996-07-30 1998-02-04 大韩重石株式会社 用于手表和装饰的超硬合金
JP4596692B2 (ja) * 2001-06-28 2010-12-08 京セラ株式会社 焼結合金及びその製造方法
WO2007058177A1 (fr) * 2005-11-15 2007-05-24 Nippon Tungsten Co., Ltd. Bague d’etancheite mecanique
JP4960070B2 (ja) 2006-11-28 2012-06-27 京セラ株式会社 黒色セラミックスおよびこれを用いた時計用装飾部品ならびにその黒色セラミックスの製造方法
EP2226404A4 (fr) * 2007-11-28 2012-07-25 Kyocera Corp Céramique pour pièces décoratives et pièces décoratives faites à l'aide de la céramique
WO2012121023A1 (fr) * 2011-03-07 2012-09-13 住友電工ハードメタル株式会社 Matériau pour élément décoratif
JP5829563B2 (ja) * 2011-03-30 2015-12-09 京セラ株式会社 窒化珪素質焼結体およびこれを用いた装飾部品
CN102766793B (zh) * 2012-07-31 2015-04-08 自贡硬质合金有限责任公司 金属陶瓷材料及其制备方法

Also Published As

Publication number Publication date
JPWO2014112314A1 (ja) 2017-01-19
JP6343795B2 (ja) 2018-06-20
CN104884653A (zh) 2015-09-02
EP2947166A4 (fr) 2016-11-09
KR20150104116A (ko) 2015-09-14
WO2014112314A1 (fr) 2014-07-24
HK1211324A1 (en) 2016-05-20
CN104884653B (zh) 2017-04-26

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