WO2014071583A1 - Alliages d'or contenant du nickel ayant un faible taux de libération de nickel, alliages mères permettant de les obtenir et utilisation d'éléments métalliques dans ceux-ci - Google Patents

Alliages d'or contenant du nickel ayant un faible taux de libération de nickel, alliages mères permettant de les obtenir et utilisation d'éléments métalliques dans ceux-ci Download PDF

Info

Publication number
WO2014071583A1
WO2014071583A1 PCT/CN2012/084276 CN2012084276W WO2014071583A1 WO 2014071583 A1 WO2014071583 A1 WO 2014071583A1 CN 2012084276 W CN2012084276 W CN 2012084276W WO 2014071583 A1 WO2014071583 A1 WO 2014071583A1
Authority
WO
WIPO (PCT)
Prior art keywords
alloy
gold
weight
percentage
nickel
Prior art date
Application number
PCT/CN2012/084276
Other languages
English (en)
Inventor
PoHung KO
KitPo TONG
Penny LO
Orpheus KONG
Original Assignee
Heraeus 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 Heraeus Ltd. filed Critical Heraeus Ltd.
Priority to CN201280076941.2A priority Critical patent/CN104884650B/zh
Priority to PCT/CN2012/084276 priority patent/WO2014071583A1/fr
Publication of WO2014071583A1 publication Critical patent/WO2014071583A1/fr
Priority to HK15110748.7A priority patent/HK1210231A1/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • C22C5/02—Alloys based on gold
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C22C30/06—Alloys containing less than 50% by weight of each constituent containing zinc
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent

Definitions

  • the present invention relates to nickel containing gold alloys, to master alloys for obtaining them, and to the use of the master alloys or the metal elements therein to reduce the release rate of Ni in said nickel containing gold alloys.
  • nickel can present a health problem when people become exposed to it.
  • one of the goals is to obtain nickel containing gold alloys with low nickel releasing rate.
  • the alloy has to comply with such standard so as to enter the consumer market.
  • US2003012679A1 or EP1266974 discloses gold alloys and master alloys for obtaining them, but its fundamental goals is to obtain gold alloys exhibiting good fluidity (i.e. a good ability to fill and replicate wax patterns) at the moment of casting, and finished articles which have a bright outer surface and a good mechanical properties. Moreover, it does not provide any example for nickel containing gold alloy and does not mention the problem of nickel releasing.
  • the present invention aims to provide a technical solution that can overcome the aforementioned problems.
  • indium (In), gallium (Ga), or the mixtures thereof can be used in the master alloy to reduce the nickel releasing rate of the nickel containing gold alloys.
  • the present invention includes the followings technical solutions:
  • a nickel containing gold alloys with low nickel releasing rate comprising the master alloy according to the present invention.
  • the master alloy comprises or consisting of, by weight:
  • the total amount of In and Ga is at least 4%.
  • the gold alloy comprises or consisting of, by weight
  • the total amount of indium (In), gallium (Ga), or the mixtures thereof for used in the master alloy is at least or more than 4% by weight; at least or more than 5% by weight; at most or less than 7% by weight; at most or less than 7% by weight; at most or less than 14% by weight; at most or less than 20% by weight; 4% to 20% by weight; 5% to 14% by weight, etc.
  • the amount of In is 4% or >4% to 10%, most preferably 2%, 4%, 6%, 8% or 10%, by weight of the master alloy.
  • the amount of Ga is 4% or >4% to 10%, most preferably 2%, 4%, 6%, 8% or 10%, by weight of the master alloy.
  • the amount of Ni is 16% to 60%, 20-40%, 25-40%% or 30-40%, most preferably 19.9%, 20%, 24.5%, 30% or 64%, by weight of the master alloy.
  • the master alloy may comprise Si in an amount of 0.03 to 1.2%, 0.1 to 0.3%, most preferably 0.2%, by weight of the master alloy.
  • the master alloy may comprise Zn in an amount of 6-25%, or 12-20%, most preferably 14.8%, 15%, 19%, 19.5%, or 20%, by weight of the master alloy.
  • the master alloy may comprise Ag in an amount of 0-34%, or 2-17%, most preferably 2.5%, by weight of the master alloy.
  • the master alloy may comprise Ge in an amount of 0-4% by weight of the master alloy.
  • the master alloy may comprise Sn in an amount of 0-4% by weight of the master alloy.
  • the master alloy may comprise Ir in an amount of 0-0.4% by weight of the master alloy.
  • the master alloy may comprise a balance of Cu by weight of the master alloy.
  • the sum of the amount of all the components in the alloys is equal to 100% by weight.
  • a master alloy whose composition in terms of weight percentage is as follows:
  • the corresponding 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • the 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • a master alloy whose composition in terms of weight percentage is as follows: Master alloy comprising (as a percentage on the weight of the alloy): Ag (%) Cu (%) Zn (%) Ni (%) In (%) Ga (%) Si (%)
  • the corresponding 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • the 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • the 14K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • a control master alloy is provided to show the unexpected effect of the present invention, whose composition in terms of weight percentage is as follows:
  • Control master alloy comprising (as a percentage on the weight of the alloy):
  • the corresponding control 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • control 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding control 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • control 14K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • Master alloy comprising (as a percentage on the weight of the alloy):
  • the corresponding 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • the 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • the 14K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • a control master alloy is provided to show the unexpected effect of the present invention, whose composition in terms of weight percentage is as follows:
  • Control master alloy comprising (as a percentage on the weight of the alloy):
  • the corresponding control 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • control 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding control 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • control 14K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • Master alloy comprising (as a percentage on the weight of the alloy):
  • the corresponding 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • the 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • a master alloy whose composition in terms of weight percentage is as Master alloy comprising (as a percentage on the weight of the alloy):
  • the corresponding 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • the 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • a master alloy whose composition in terms of weight percentage is as follows: Master alloy comprising (as a percentage on the weight of the alloy): Ag (%) Cu (%) Zn (%) Ni (%) In (%) Ga (%) Si (%)
  • the corresponding 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • the 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • a master alloy whose composition in terms of weight percentage is as Master alloy comprising (as a percentage on the weight of the alloy):
  • the corresponding 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • the 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • a master alloy whose composition in terms of weight percentage is as Master alloy comprising (as a percentage on the weight of the alloy):
  • the corresponding 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows: 75% gold with the above master alloy sufficient to reach 100%.
  • the 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • Master alloy comprising (as a percentage on the weight of the alloy):
  • the corresponding 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • the 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • a control master alloy is provided to show the unexpected effect of the present invention, whose composition in terms of weight percentage is as follows:
  • Control master alloy comprising (as a percentage on the weight of the alloy):
  • the corresponding control 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • control 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding control 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • control 14K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • a master alloy whose composition in terms of weight percentage is as follows:
  • the corresponding 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • the 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • a master alloy whose composition in terms of weight percentage is as follows:
  • the corresponding 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • the 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • a control master alloy is provided to show the unexpected effect of the present invention, whose composition in terms of weight percentage is as follows:
  • Control master alloy comprising (as a percentage on the weight of the alloy):
  • control 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding control 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • control 14K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • a master alloy whose composition in terms of weight percentage is as follows:
  • the corresponding 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • the corresponding 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • a control master alloy is provided to show the unexpected effect of the present invention, whose composition in terms of weight percentage is as follows:
  • Control master alloy comprising (as a percentage on the weight of the alloy):
  • the corresponding control 18K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • control 18K gold alloy obtained is subject to laboratory tests for measuring the nickel releasing rate described in details below and the results are summarized in Table I.
  • the corresponding control 14K gold alloy whose composition in terms of weight percentage (as a percentage on the weight of the gold alloy) is as follows:
  • a preferential process comprises the following phases:
  • a preferential process comprises the following phases:
  • a preferential process comprises the following phases: using 41.7% of the corresponding master alloy described in the examples 1 to 12 and the control Examples 2a, 3 a, 9a, 11a and 12a to mix with 58.3% pure gold to get the karat gold jewelry.
  • the present invention achieves important advantages.
  • the Ni-releasing rate of 18K alloy of control Example 2a which does not use In has been significantly reduced by about 70% from 1.34 to 0.39 in the Example 2 according to the present invention which contains In. Also, significant reduction of the Ni-releasing rate can be found in view of the control examples 3a, 9a, 11a and 12a because of the presence of the In or Ga.
  • the article to be tested for nickel release is placed in an artificial sweat test solution for one week.
  • concentration of dissolved nickel in the solution is determined by atomic absorption spectrometry.
  • the nickel release is expressed in micrograms per square centimeter per week (ug/cm2/week).
  • test solution corresponding to approximately 1 ml per cm2 sample area.
  • the suspended sample shall be totally immersed.
  • Examples 2a, 3a, 9a, 11a, 12a The alloy without addition of Indium or gallium as control.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Adornments (AREA)
  • Contacts (AREA)

Abstract

L'invention concerne des alliages d'or contenant du nickel ayant un faible taux de libération de nickel, des alliages mères permettant d'obtenir lesdits alliages d'or contenant du nickel, et l'utilisation de In, Ga ou du mélange de ceux-ci, dans les alliages d'or contenant du nickel ou dans l'alliage mère pour réduire le taux de libération du nickel des alliages d'or contenant du nickel, l'alliage mère ou l'alliage d'or comportant lesdits éléments métalliques indiqués.
PCT/CN2012/084276 2012-11-08 2012-11-08 Alliages d'or contenant du nickel ayant un faible taux de libération de nickel, alliages mères permettant de les obtenir et utilisation d'éléments métalliques dans ceux-ci WO2014071583A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201280076941.2A CN104884650B (zh) 2012-11-08 2012-11-08 具有低镍释放速率的含镍金合金、用于获得所述含镍金合金的中间合金以及其中金属元素的用途
PCT/CN2012/084276 WO2014071583A1 (fr) 2012-11-08 2012-11-08 Alliages d'or contenant du nickel ayant un faible taux de libération de nickel, alliages mères permettant de les obtenir et utilisation d'éléments métalliques dans ceux-ci
HK15110748.7A HK1210231A1 (en) 2012-11-08 2015-10-30 Nickel containing gold alloys having low nickel releasing rate, master alloys for obtaining them and use of metal elements therein

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2012/084276 WO2014071583A1 (fr) 2012-11-08 2012-11-08 Alliages d'or contenant du nickel ayant un faible taux de libération de nickel, alliages mères permettant de les obtenir et utilisation d'éléments métalliques dans ceux-ci

Publications (1)

Publication Number Publication Date
WO2014071583A1 true WO2014071583A1 (fr) 2014-05-15

Family

ID=50683923

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/084276 WO2014071583A1 (fr) 2012-11-08 2012-11-08 Alliages d'or contenant du nickel ayant un faible taux de libération de nickel, alliages mères permettant de les obtenir et utilisation d'éléments métalliques dans ceux-ci

Country Status (3)

Country Link
CN (1) CN104884650B (fr)
HK (1) HK1210231A1 (fr)
WO (1) WO2014071583A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021141987A1 (fr) * 2020-01-06 2021-07-15 Xtalic Corporation Alliage nickel-or et ses procédés de formation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014690A (en) * 1976-05-14 1977-03-29 Howmedica, Inc. Gold-colored alloy solders
US4111690A (en) * 1976-08-21 1978-09-05 W. C. Heraeus Gmbh Electrical contacts with gold alloy
US4473621A (en) * 1983-07-19 1984-09-25 Johnson Matthey Limited Cadmium free gold alloys
US20020141895A1 (en) * 2000-07-17 2002-10-03 Harms Edward J. Dental alloy for porcelain-fused-to-metal restorations
JP2005088047A (ja) * 2003-09-17 2005-04-07 Citizen Watch Co Ltd 白色金合金ロウ材およびそれを用いたロウ付け方法
CN101255507A (zh) * 2008-02-29 2008-09-03 深圳大学 一种含稀土多元白色金合金及其制备方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3826607A1 (de) * 1988-08-05 1990-02-08 Forsch Edelmetalle Und Metallc Verwendung einer verbesserten palladium-weissgoldlegierung zur schmuckherstellung
FR2764906B1 (fr) * 1997-06-18 1999-09-10 Engelhard Clal Sas Alliages d'or gris 18 et 14 carats pour bijouterie, sans nickel et sans palladium
JP2001335860A (ja) * 2000-05-26 2001-12-04 Tokuriki Honten Co Ltd 装飾品用金合金
JP2002256360A (ja) * 2001-03-01 2002-09-11 Ijima Kingin Kogyo Kk 白色金合金
ITVR20070134A1 (it) * 2007-09-27 2009-03-28 Legor Group S R L Leghe per oreficeria per la realizzazione di oggetti in oro bianco privi di nichel
EP2251444A1 (fr) * 2009-05-06 2010-11-17 Rolex Sa Alliage d'or gris sans nickel et sans cuivre
CN101775519A (zh) * 2010-01-19 2010-07-14 深圳市星光达珠宝首饰实业有限公司 一种贵金属首饰配方

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014690A (en) * 1976-05-14 1977-03-29 Howmedica, Inc. Gold-colored alloy solders
US4111690A (en) * 1976-08-21 1978-09-05 W. C. Heraeus Gmbh Electrical contacts with gold alloy
US4473621A (en) * 1983-07-19 1984-09-25 Johnson Matthey Limited Cadmium free gold alloys
US20020141895A1 (en) * 2000-07-17 2002-10-03 Harms Edward J. Dental alloy for porcelain-fused-to-metal restorations
JP2005088047A (ja) * 2003-09-17 2005-04-07 Citizen Watch Co Ltd 白色金合金ロウ材およびそれを用いたロウ付け方法
CN101255507A (zh) * 2008-02-29 2008-09-03 深圳大学 一种含稀土多元白色金合金及其制备方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
XIANG, XIONGZHI ET AL.: "The Status of Investigation About Small Alloying Additions for Jewellery.", FOUNDRY., vol. 55, no. 7, July 2006 (2006-07-01), pages 668 - 672 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021141987A1 (fr) * 2020-01-06 2021-07-15 Xtalic Corporation Alliage nickel-or et ses procédés de formation

Also Published As

Publication number Publication date
CN104884650A (zh) 2015-09-02
CN104884650B (zh) 2017-09-05
HK1210231A1 (en) 2016-04-15

Similar Documents

Publication Publication Date Title
TWI551701B (zh) 由金製成的時計或首飾件
Tsao et al. Corrosion characterization of Cu–Sn intermetallics in 3.5 wt.% NaCl solution
CN107385266B (zh) 高强度足金材料及其制备方法
JPH07501853A (ja) 液相焼結せずに本来の位置で合金を形成する方法
CN104404329A (zh) 一种高耐腐蚀镁合金材料及其制备方法
ITVR20070134A1 (it) Leghe per oreficeria per la realizzazione di oggetti in oro bianco privi di nichel
CN107227421B (zh) 镁锂合金及其制备方法
JP2019122776A (ja) ローズゴールド合金から作成される時計
CN105316530A (zh) 一种用于制备氢气的铝基合金
Milheiro et al. Influence of shape and finishing on the corrosion of palladium-based dental alloys
WO2010096239A1 (fr) Alliages de bijou de couleur jaune à faible teneur en or et en palladium résistant au ternissement et présentant une meilleure coulabilité
WO2014071583A1 (fr) Alliages d'or contenant du nickel ayant un faible taux de libération de nickel, alliages mères permettant de les obtenir et utilisation d'éléments métalliques dans ceux-ci
CN102373347B (zh) 一种银用补口铜基合金及其制备方法
Sakamoto et al. X-ray investigation of the absorption of hydrogen by several palladium and nickel solid solution alloys
JP7144427B2 (ja) 酸化第一錫粉末
CN102232121B (zh) 一种抗变色银合金及其制备方法
US6312499B1 (en) Method for stabilization of liquid mercury
JPS6047903B2 (ja) 黄金色を呈する鋳造用低カラツト金合金
JP2009228088A (ja) 鋳放しで時効硬化する歯科用、装飾用および工業製品金合金。
Xiang et al. Colour and Nickel release of low nickle white gold alloy with Mn addition
Gandova et al. On the synthesis of Bi-based precursors for lead-free solders development
US20130129562A1 (en) Pink colored metal alloy having low gold content
Dresvyannikov et al. Synthesis and Properties of Dispersed Systems Based on Elemental Iron and Tungsten Obtained through Precipitation on Aluminum in the Presence of Citric Acid
Wakasa et al. Dental application of the 30Ni-30Cu-40Mn ternary alloy system
Xiang et al. Effect of cobalt additions on the properties of sterling sliver alloys

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12888131

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12888131

Country of ref document: EP

Kind code of ref document: A1