WO2020091082A2 - White gold alloy brazing material - Google Patents
White gold alloy brazing material Download PDFInfo
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- WO2020091082A2 WO2020091082A2 PCT/JP2020/004092 JP2020004092W WO2020091082A2 WO 2020091082 A2 WO2020091082 A2 WO 2020091082A2 JP 2020004092 W JP2020004092 W JP 2020004092W WO 2020091082 A2 WO2020091082 A2 WO 2020091082A2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
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- 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
Definitions
- the present disclosure relates to a white gold alloy brazing material.
- Brazing may be used to join metal members together. Brazing is achieved by introducing a metal brazing material that has been heated to a liquid state between the members to be joined and solidifying the brazing material.
- a brazing material made of a white gold alloy (white gold alloy brazing material) may be used from the viewpoint of making the joined portions inconspicuous.
- the composition of the white gold alloy brazing material is determined based on, for example, the melting point and the bonding strength in consideration of its use (see, for example, Japanese Patent Application Laid-Open No. 2005-0888047 (Patent Document 1)).
- the composition of the white gold alloy brazing material is determined based on the melting point, strength, etc. as described above, the brazing flow may be insufficient during the brazing work. If the flow of the brazing is insufficient, there is a problem that the workability of brazing is reduced.
- one of the objectives is to provide a white gold alloy brazing material with excellent brazing workability.
- the white gold alloy brazing material according to the present disclosure includes 74% by mass or more and 78% by mass or less Au (gold), 12% by mass or more and 16% by mass or less Pd (palladium), and 3% by mass or more and 7% by mass or less. It contains Zn (zinc) and Ga (gallium) and In (indium) in a total amount of 4% by mass or more and 7% by mass or less, with the balance being unavoidable impurities. The ratio of the content of Ga to the total content of Ga and In is 0.65 or more and 0.8 or less.
- the white gold alloy brazing material it is possible to provide a white gold alloy brazing material having excellent brazing workability.
- the white gold alloy brazing material of the present disclosure includes 74% by mass or more and 78% by mass or less Au, 12% by mass or more and 16% by mass or less Pd, and 3% by mass or more and 7% by mass or less Zn in total, 4% by mass. % And 7% by mass or less of Ga and In, with the balance being unavoidable impurities.
- the ratio of the content of Ga to the total content of Ga and In is 0.65 or more and 0.8 or less.
- Au 74% by mass or more and 78% by mass or less Au is the main component of the white gold alloy brazing material of the present disclosure.
- the content of Au is preferably 77% by mass or less, and more preferably 76% by mass or less.
- Pd 12% by mass or more and 16% by mass or less
- Pd has a function of bringing the tint of the white gold alloy brazing material close to white (the tint of a typical white gold alloy). Further, by adding Pd, the yield strength of the white gold alloy brazing material can be improved. From the viewpoint of sufficiently obtaining such a function, the content of Pd needs to be 12% by mass or more. From the viewpoint of more reliably obtaining the above function, the Pd content is preferably 13% by mass or more, and more preferably 14% by mass or more. When the content of Pd exceeds 16% by mass, the melting point of the white gold alloy brazing material becomes high and the workability of brazing decreases. Therefore, the Pd content needs to be 16 mass% or less.
- Zn 3% by mass or more and 7% by mass or less
- Zn has a function of lowering the melting point of the white gold alloy brazing material. From the viewpoint of sufficiently obtaining this function, the Zn content needs to be 3% by mass or more, and is preferably 4% by mass or more.
- the content of Zn exceeds 7 mass%, the flow of the brazing becomes insufficient and the workability of brazing is deteriorated. It is one of the most important objects of the invention according to the present disclosure to avoid insufficient brazing flow and to ensure excellent workability in brazing.
- the present inventor has conducted the following studies, and has obtained knowledge for securing workability of brazing.
- the content of Zn has a great influence on the reduction of the flow of wax.
- the flow of the wax is such that the liquidus temperature of the white gold alloy brazing material (temperature at which solidification occurs when the liquid brazing material is cooled and solidification begins) and solidus temperature (cooling of the liquid brazing material). At this time, the entire area becomes solid and becomes worse when the difference from the solidification temperature) becomes large. It is considered that this is due to the large temperature range in which the solid phase and the liquid phase coexist when the brazing material is cooled.
- the Zn content needs to be 7 mass% or less. From the viewpoint of ensuring excellent workability of brazing, the Zn content is preferably 6% by mass or less.
- Ga and In 4% by mass or more and 7% by mass or less in total Ga and In have a function of lowering the melting point of the white gold alloy brazing material like Zn. From the viewpoint of sufficiently obtaining this function, the total content of Ga and In needs to be 4% by mass or more.
- the contents of Ga and In, like Zn also influence the difference between the liquidus temperature and the solidus temperature of the white gold alloy brazing material, and reduce the flow of the brazing material. It has a great influence.
- the total content of Ga and In exceeds 7% by mass, the difference between the liquidus temperature and the solidus temperature of the white gold alloy brazing material becomes so large as to deteriorate the workability of brazing. Therefore, the total content of Ga and In needs to be 7 mass% or less. From the viewpoint of ensuring excellent workability of brazing, the total content of Ga and In is preferably 6% by mass or less.
- Ratio of the content of Ga to the total content of Ga and In 0.65 or more and 0.8 or less
- the ratio of the content of Ga to the content of Ga also greatly affects the workability of brazing. Specifically, when the ratio is out of the range of 0.65 or more and 0.8 or less, the difference between the liquidus temperature and the solidus temperature of the white gold alloy brazing material deteriorates the workability of brazing. Grows to. From the viewpoint of ensuring excellent workability of brazing, the ratio of the Ga content to the total content of Ga and In must be 0.65 or more and 0.8 or less, and 0.65 or more and 0.75 or less. The following is preferable.
- the white gold alloy brazing material is unavoidably (unintentionally) mixed with impurities (unavoidable impurities) during manufacturing.
- the content of unavoidable impurities is preferably small, specifically 0.1 mass% or less, and more preferably 0.05 mass% or less.
- the numerical value in the column of Ga / (Ga + In) is the ratio of the content of Ga to the total content of Ga and In.
- the numerical value in the Ga + In column is the total content of Ga and In, and its unit is mass%.
- Numerical values in the column of other element symbols are the contents of the corresponding elements, and the unit thereof is mass%.
- the numerical values underlined and shown in bold are numerical values corresponding to outside the range of the white gold alloy brazing material of the present disclosure.
- No. of Table 1 1-4 are example samples that meet the requirements of the white gold alloy braze material of the present disclosure.
- No. of Table 1 5 to 16 are comparative samples that are outside the range of the white gold alloy brazing material of the present disclosure. Test pieces were prepared from the samples of the above-mentioned examples and comparative examples, and experiments for confirming the following characteristics were conducted.
- Table 2 shows the evaluation results of the above characteristics.
- the contents of Pd, Zn, Ga and In greatly influence the melting point (solidus temperature and liquidus temperature) of the sample.
- the Pd and Zn contents, the total Ga and In contents, and the ratio of the Ga content to the total Ga and In contents satisfy the requirements of the white gold alloy brazing material of the present disclosure.
- the melting point (particularly the liquidus point) temperature is sufficiently higher than the melting point of the metal (for example, white gold alloy) assumed as the material forming the members to be joined by brazing. Very low. Therefore, the brazing work can be easily performed by using the white gold alloy brazing material of the embodiment.
- the Zn content, the total content of Ga and In, and the ratio of the Ga content to the total content of Ga and In are determined as follows: It can be seen that the difference with the point temperature is greatly affected. Then, samples of Examples in which the content of Zn, the total content of Ga and In, and the ratio of the content of Ga to the total content of Ga and In satisfy the requirements of the white gold alloy brazing material of the present disclosure described above. In (Sample Nos. 1 to 4), the difference between the liquidus temperature and the solidus temperature is sufficiently small. Therefore, by adopting the white gold alloy brazing material of the embodiment, the flow of the brazing becomes good, and the brazing work can be carried out easily. Further, since the difference between the liquidus temperature and the solidus temperature is sufficiently small, it is possible to reduce the difference in composition depending on the location, for example, in the white gold alloy brazing material after joining.
- the white gold alloy brazing material according to the present disclosure has a white color close to that of a typical white gold alloy and has excellent brazing workability. Therefore, the white gold alloy brazing material of the present disclosure is suitable as a brazing material for joining jewelry made of white gold alloy, for example.
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Abstract
This white gold alloy brazing material contains 74–78 mass% Au (gold), 12–16 mass% Pd (palladium), 3–7 mass% Zn (zinc), and a combined total of 4-7 mass% Ga (gallium) and In (indium), with the remainder comprising unavoidable impurities. The ratio of the amount of Ga relative to the total amount of Ga and In is 0.65–0.8.
Description
本開示は、ホワイトゴールド合金ロウ材に関するものである。
The present disclosure relates to a white gold alloy brazing material.
金属製の部材同士の接合に、ロウ付けが採用される場合がある。ロウ付けは、接合されるべき部材同士の間に、加熱されて液体状態となった金属製のロウ材が導入され、当該ロウ材が凝固することにより達成される。白色の金属製の部材同士を接合する場合、接合された部分を目立たなくする観点から、ホワイトゴールド合金製のロウ材（ホワイトゴールド合金ロウ材）が採用される場合がある。ホワイトゴールド合金ロウ材の組成は、その用途を考慮して、たとえば融点、接合強度などに基づいて決定される（たとえば、特開２００５－０８８０４７号公報（特許文献１）参照）。
Brazing may be used to join metal members together. Brazing is achieved by introducing a metal brazing material that has been heated to a liquid state between the members to be joined and solidifying the brazing material. When joining white metal members together, a brazing material made of a white gold alloy (white gold alloy brazing material) may be used from the viewpoint of making the joined portions inconspicuous. The composition of the white gold alloy brazing material is determined based on, for example, the melting point and the bonding strength in consideration of its use (see, for example, Japanese Patent Application Laid-Open No. 2005-0888047 (Patent Document 1)).
しかし、上記のように融点、強度などに基づいてホワイトゴールド合金ロウ材の組成を決定した場合、ロウ付けの作業においてロウの流れが不十分となる場合がある。ロウの流れが不十分となると、ロウ付けの作業性が低下するという問題が生じる。
However, if the composition of the white gold alloy brazing material is determined based on the melting point, strength, etc. as described above, the brazing flow may be insufficient during the brazing work. If the flow of the brazing is insufficient, there is a problem that the workability of brazing is reduced.
そこで、ロウ付けの作業性に優れたホワイトゴールド合金ロウ材を提供することを目的の１つとする。
Therefore, one of the objectives is to provide a white gold alloy brazing material with excellent brazing workability.
本開示に係るホワイトゴールド合金ロウ材は、７４質量％以上７８質量％以下のＡｕ（金）と、１２質量％以上１６質量％以下のＰｄ（パラジウム）と、３質量％以上７質量％以下のＺｎ（亜鉛）と、合計で４質量％以上７質量％以下のＧａ（ガリウム）およびＩｎ（インジウム）と、を含有し、残部が不可避的不純物からなる。ＧａおよびＩｎの合計の含有量に対するＧａの含有量の割合は０．６５以上０．８以下である。
The white gold alloy brazing material according to the present disclosure includes 74% by mass or more and 78% by mass or less Au (gold), 12% by mass or more and 16% by mass or less Pd (palladium), and 3% by mass or more and 7% by mass or less. It contains Zn (zinc) and Ga (gallium) and In (indium) in a total amount of 4% by mass or more and 7% by mass or less, with the balance being unavoidable impurities. The ratio of the content of Ga to the total content of Ga and In is 0.65 or more and 0.8 or less.
上記ホワイトゴールド合金ロウ材によれば、ロウ付けの作業性に優れたホワイトゴールド合金ロウ材を提供することができる。
According to the white gold alloy brazing material, it is possible to provide a white gold alloy brazing material having excellent brazing workability.
［実施形態の概要］
本開示のホワイトゴールド合金ロウ材は、７４質量％以上７８質量％以下のＡｕと、１２質量％以上１６質量％以下のＰｄと、３質量％以上７質量％以下のＺｎと、合計で４質量％以上７質量％以下のＧａおよびＩｎと、を含有し、残部が不可避的不純物からなる。ＧａおよびＩｎの合計の含有量に対するＧａの含有量の割合は０．６５以上０．８以下である。 [Outline of Embodiment]
The white gold alloy brazing material of the present disclosure includes 74% by mass or more and 78% by mass or less Au, 12% by mass or more and 16% by mass or less Pd, and 3% by mass or more and 7% by mass or less Zn in total, 4% by mass. % And 7% by mass or less of Ga and In, with the balance being unavoidable impurities. The ratio of the content of Ga to the total content of Ga and In is 0.65 or more and 0.8 or less.
本開示のホワイトゴールド合金ロウ材は、７４質量％以上７８質量％以下のＡｕと、１２質量％以上１６質量％以下のＰｄと、３質量％以上７質量％以下のＺｎと、合計で４質量％以上７質量％以下のＧａおよびＩｎと、を含有し、残部が不可避的不純物からなる。ＧａおよびＩｎの合計の含有量に対するＧａの含有量の割合は０．６５以上０．８以下である。 [Outline of Embodiment]
The white gold alloy brazing material of the present disclosure includes 74% by mass or more and 78% by mass or less Au, 12% by mass or more and 16% by mass or less Pd, and 3% by mass or more and 7% by mass or less Zn in total, 4% by mass. % And 7% by mass or less of Ga and In, with the balance being unavoidable impurities. The ratio of the content of Ga to the total content of Ga and In is 0.65 or more and 0.8 or less.
以下、本開示のホワイトゴールド合金ロウ材の成分組成を上記範囲に限定した理由について説明する。
Hereinafter, the reason why the component composition of the white gold alloy brazing material of the present disclosure is limited to the above range will be described.
Ａｕ：７４質量％以上７８質量％以下
Ａｕは、本開示のホワイトゴールド合金ロウ材の主成分である。Ａｕの含有量を７４質量％以上とすることにより、本開示のホワイトゴールド合金ロウ材をホワイトゴールド合金の接合に使用した場合に、全体として１８Ｋホワイトゴールドの状態を維持することが容易となる。Ａｕの含有量を７８質量％以下とすることで、色味を代表的なホワイトゴールド合金などに近い白色とすることができる。ホワイトゴールド合金ロウ材の色味を代表的なホワイトゴールド合金により近いものとする観点から、Ａｕの含有量は７７質量％以下とすることが好ましく、７６質量％以下とすることがより好ましい。 Au: 74% by mass or more and 78% by mass or less Au is the main component of the white gold alloy brazing material of the present disclosure. By setting the content of Au to 74% by mass or more, when the white gold alloy brazing material according to the present disclosure is used for joining a white gold alloy, it becomes easy to maintain a state of 18K white gold as a whole. By setting the content of Au to 78% by mass or less, the tint can be made white close to that of a typical white gold alloy. From the viewpoint of making the tint of the white gold alloy brazing material closer to that of a typical white gold alloy, the content of Au is preferably 77% by mass or less, and more preferably 76% by mass or less.
Ａｕは、本開示のホワイトゴールド合金ロウ材の主成分である。Ａｕの含有量を７４質量％以上とすることにより、本開示のホワイトゴールド合金ロウ材をホワイトゴールド合金の接合に使用した場合に、全体として１８Ｋホワイトゴールドの状態を維持することが容易となる。Ａｕの含有量を７８質量％以下とすることで、色味を代表的なホワイトゴールド合金などに近い白色とすることができる。ホワイトゴールド合金ロウ材の色味を代表的なホワイトゴールド合金により近いものとする観点から、Ａｕの含有量は７７質量％以下とすることが好ましく、７６質量％以下とすることがより好ましい。 Au: 74% by mass or more and 78% by mass or less Au is the main component of the white gold alloy brazing material of the present disclosure. By setting the content of Au to 74% by mass or more, when the white gold alloy brazing material according to the present disclosure is used for joining a white gold alloy, it becomes easy to maintain a state of 18K white gold as a whole. By setting the content of Au to 78% by mass or less, the tint can be made white close to that of a typical white gold alloy. From the viewpoint of making the tint of the white gold alloy brazing material closer to that of a typical white gold alloy, the content of Au is preferably 77% by mass or less, and more preferably 76% by mass or less.
Ｐｄ：１２質量％以上１６質量％以下
Ｐｄは、ホワイトゴールド合金ロウ材の色味を白色（代表的なホワイトゴールド合金の色味）に近づける機能を有する。また、Ｐｄを添加することにより、ホワイトゴールド合金ロウ材の耐力を向上させることができる。このような機能を十分に得る観点から、Ｐｄの含有量は１２質量％以上とする必要がある。また、上記機能をより確実に得る観点から、Ｐｄの含有量は１３質量％以上とすることが好ましく、１４質量％以上とすることがより好ましい。Ｐｄの含有量が１６質量％を超えると、ホワイトゴールド合金ロウ材の融点が高くなり、ロウ付けの作業性が低下する。そのため、Ｐｄの含有量は１６質量％以下とする必要がある。 Pd: 12% by mass or more and 16% by mass or less Pd has a function of bringing the tint of the white gold alloy brazing material close to white (the tint of a typical white gold alloy). Further, by adding Pd, the yield strength of the white gold alloy brazing material can be improved. From the viewpoint of sufficiently obtaining such a function, the content of Pd needs to be 12% by mass or more. From the viewpoint of more reliably obtaining the above function, the Pd content is preferably 13% by mass or more, and more preferably 14% by mass or more. When the content of Pd exceeds 16% by mass, the melting point of the white gold alloy brazing material becomes high and the workability of brazing decreases. Therefore, the Pd content needs to be 16 mass% or less.
Ｐｄは、ホワイトゴールド合金ロウ材の色味を白色（代表的なホワイトゴールド合金の色味）に近づける機能を有する。また、Ｐｄを添加することにより、ホワイトゴールド合金ロウ材の耐力を向上させることができる。このような機能を十分に得る観点から、Ｐｄの含有量は１２質量％以上とする必要がある。また、上記機能をより確実に得る観点から、Ｐｄの含有量は１３質量％以上とすることが好ましく、１４質量％以上とすることがより好ましい。Ｐｄの含有量が１６質量％を超えると、ホワイトゴールド合金ロウ材の融点が高くなり、ロウ付けの作業性が低下する。そのため、Ｐｄの含有量は１６質量％以下とする必要がある。 Pd: 12% by mass or more and 16% by mass or less Pd has a function of bringing the tint of the white gold alloy brazing material close to white (the tint of a typical white gold alloy). Further, by adding Pd, the yield strength of the white gold alloy brazing material can be improved. From the viewpoint of sufficiently obtaining such a function, the content of Pd needs to be 12% by mass or more. From the viewpoint of more reliably obtaining the above function, the Pd content is preferably 13% by mass or more, and more preferably 14% by mass or more. When the content of Pd exceeds 16% by mass, the melting point of the white gold alloy brazing material becomes high and the workability of brazing decreases. Therefore, the Pd content needs to be 16 mass% or less.
Ｚｎ：３質量％以上７質量％以下
Ｚｎは、ホワイトゴールド合金ロウ材の融点を下げる機能を有する。この機能を十分に得る観点から、Ｚｎの含有量は３質量％以上とする必要があり、４質量％以上とすることが好ましい。一方、Ｚｎの含有量が７質量％を超えるとロウの流れが不十分となり、ロウ付けの作業性が低下する。ロウの流れが不十分となることを回避し、ロウ付けにおいて優れた作業性を確保することは、本開示に係る発明の最も重要な目的の１つである。本発明者は以下のような検討を行い、ロウ付けの作業性確保のための知見を得た。ロウの流れの低下には、Ｚｎの含有量が大きな影響を有する。また、ロウの流れは、ホワイトゴールド合金ロウ材の液相点温度（液体のロウ材を冷却した際に固相が生じ、凝固が始まる温度）と固相点温度（液体のロウ材を冷却した際に全域が固体となり、凝固が完了する温度）との差が大きくなると悪化する。これは、ロウ材の冷却時に固相と液相とが共存する温度範囲が大きいことに起因するものと考えられる。Ｚｎの含有量が７質量％を超えるとホワイトゴールド合金ロウ材の液相点温度と固相点温度との差がロウ付けの作業性を悪化させる程度に大きくなる。そのため、Ｚｎの含有量は７質量％以下とする必要がある。ロウ付けの優れた作業性を確保する観点からは、Ｚｎの含有量は６質量％以下とすることが好ましい。 Zn: 3% by mass or more and 7% by mass or less Zn has a function of lowering the melting point of the white gold alloy brazing material. From the viewpoint of sufficiently obtaining this function, the Zn content needs to be 3% by mass or more, and is preferably 4% by mass or more. On the other hand, when the content of Zn exceeds 7 mass%, the flow of the brazing becomes insufficient and the workability of brazing is deteriorated. It is one of the most important objects of the invention according to the present disclosure to avoid insufficient brazing flow and to ensure excellent workability in brazing. The present inventor has conducted the following studies, and has obtained knowledge for securing workability of brazing. The content of Zn has a great influence on the reduction of the flow of wax. In addition, the flow of the wax is such that the liquidus temperature of the white gold alloy brazing material (temperature at which solidification occurs when the liquid brazing material is cooled and solidification begins) and solidus temperature (cooling of the liquid brazing material). At this time, the entire area becomes solid and becomes worse when the difference from the solidification temperature) becomes large. It is considered that this is due to the large temperature range in which the solid phase and the liquid phase coexist when the brazing material is cooled. When the content of Zn exceeds 7 mass%, the difference between the liquidus temperature and the solidus temperature of the white gold alloy brazing material becomes so large as to deteriorate the workability of brazing. Therefore, the Zn content needs to be 7 mass% or less. From the viewpoint of ensuring excellent workability of brazing, the Zn content is preferably 6% by mass or less.
Ｚｎは、ホワイトゴールド合金ロウ材の融点を下げる機能を有する。この機能を十分に得る観点から、Ｚｎの含有量は３質量％以上とする必要があり、４質量％以上とすることが好ましい。一方、Ｚｎの含有量が７質量％を超えるとロウの流れが不十分となり、ロウ付けの作業性が低下する。ロウの流れが不十分となることを回避し、ロウ付けにおいて優れた作業性を確保することは、本開示に係る発明の最も重要な目的の１つである。本発明者は以下のような検討を行い、ロウ付けの作業性確保のための知見を得た。ロウの流れの低下には、Ｚｎの含有量が大きな影響を有する。また、ロウの流れは、ホワイトゴールド合金ロウ材の液相点温度（液体のロウ材を冷却した際に固相が生じ、凝固が始まる温度）と固相点温度（液体のロウ材を冷却した際に全域が固体となり、凝固が完了する温度）との差が大きくなると悪化する。これは、ロウ材の冷却時に固相と液相とが共存する温度範囲が大きいことに起因するものと考えられる。Ｚｎの含有量が７質量％を超えるとホワイトゴールド合金ロウ材の液相点温度と固相点温度との差がロウ付けの作業性を悪化させる程度に大きくなる。そのため、Ｚｎの含有量は７質量％以下とする必要がある。ロウ付けの優れた作業性を確保する観点からは、Ｚｎの含有量は６質量％以下とすることが好ましい。 Zn: 3% by mass or more and 7% by mass or less Zn has a function of lowering the melting point of the white gold alloy brazing material. From the viewpoint of sufficiently obtaining this function, the Zn content needs to be 3% by mass or more, and is preferably 4% by mass or more. On the other hand, when the content of Zn exceeds 7 mass%, the flow of the brazing becomes insufficient and the workability of brazing is deteriorated. It is one of the most important objects of the invention according to the present disclosure to avoid insufficient brazing flow and to ensure excellent workability in brazing. The present inventor has conducted the following studies, and has obtained knowledge for securing workability of brazing. The content of Zn has a great influence on the reduction of the flow of wax. In addition, the flow of the wax is such that the liquidus temperature of the white gold alloy brazing material (temperature at which solidification occurs when the liquid brazing material is cooled and solidification begins) and solidus temperature (cooling of the liquid brazing material). At this time, the entire area becomes solid and becomes worse when the difference from the solidification temperature) becomes large. It is considered that this is due to the large temperature range in which the solid phase and the liquid phase coexist when the brazing material is cooled. When the content of Zn exceeds 7 mass%, the difference between the liquidus temperature and the solidus temperature of the white gold alloy brazing material becomes so large as to deteriorate the workability of brazing. Therefore, the Zn content needs to be 7 mass% or less. From the viewpoint of ensuring excellent workability of brazing, the Zn content is preferably 6% by mass or less.
ＧａおよびＩｎ：合計で４質量％以上７質量％以下
ＧａおよびＩｎは、Ｚｎと同様にホワイトゴールド合金ロウ材の融点を下げる機能を有する。この機能を十分に得る観点から、ＧａおよびＩｎの含有量の合計は４質量％以上とする必要がある。一方、本発明者の検討によれば、ＧａおよびＩｎの含有量もＺｎと同様にホワイトゴールド合金ロウ材の液相点温度と固相点温度との差に影響し、ロウの流れの低下に大きく影響する。ＧａおよびＩｎの含有量の合計が７質量％を超えると、ホワイトゴールド合金ロウ材の液相点温度と固相点温度との差がロウ付けの作業性を悪化させる程度に大きくなる。そのため、ＧａおよびＩｎの含有量の合計は７質量％以下とする必要がある。ロウ付けの優れた作業性を確保する観点からは、ＧａおよびＩｎの含有量の合計は６質量％以下とすることが好ましい。 Ga and In: 4% by mass or more and 7% by mass or less in total Ga and In have a function of lowering the melting point of the white gold alloy brazing material like Zn. From the viewpoint of sufficiently obtaining this function, the total content of Ga and In needs to be 4% by mass or more. On the other hand, according to the study by the present inventor, the contents of Ga and In, like Zn, also influence the difference between the liquidus temperature and the solidus temperature of the white gold alloy brazing material, and reduce the flow of the brazing material. It has a great influence. When the total content of Ga and In exceeds 7% by mass, the difference between the liquidus temperature and the solidus temperature of the white gold alloy brazing material becomes so large as to deteriorate the workability of brazing. Therefore, the total content of Ga and In needs to be 7 mass% or less. From the viewpoint of ensuring excellent workability of brazing, the total content of Ga and In is preferably 6% by mass or less.
ＧａおよびＩｎは、Ｚｎと同様にホワイトゴールド合金ロウ材の融点を下げる機能を有する。この機能を十分に得る観点から、ＧａおよびＩｎの含有量の合計は４質量％以上とする必要がある。一方、本発明者の検討によれば、ＧａおよびＩｎの含有量もＺｎと同様にホワイトゴールド合金ロウ材の液相点温度と固相点温度との差に影響し、ロウの流れの低下に大きく影響する。ＧａおよびＩｎの含有量の合計が７質量％を超えると、ホワイトゴールド合金ロウ材の液相点温度と固相点温度との差がロウ付けの作業性を悪化させる程度に大きくなる。そのため、ＧａおよびＩｎの含有量の合計は７質量％以下とする必要がある。ロウ付けの優れた作業性を確保する観点からは、ＧａおよびＩｎの含有量の合計は６質量％以下とすることが好ましい。 Ga and In: 4% by mass or more and 7% by mass or less in total Ga and In have a function of lowering the melting point of the white gold alloy brazing material like Zn. From the viewpoint of sufficiently obtaining this function, the total content of Ga and In needs to be 4% by mass or more. On the other hand, according to the study by the present inventor, the contents of Ga and In, like Zn, also influence the difference between the liquidus temperature and the solidus temperature of the white gold alloy brazing material, and reduce the flow of the brazing material. It has a great influence. When the total content of Ga and In exceeds 7% by mass, the difference between the liquidus temperature and the solidus temperature of the white gold alloy brazing material becomes so large as to deteriorate the workability of brazing. Therefore, the total content of Ga and In needs to be 7 mass% or less. From the viewpoint of ensuring excellent workability of brazing, the total content of Ga and In is preferably 6% by mass or less.
ＧａおよびＩｎの合計の含有量に対するＧａの含有量の割合：０．６５以上０．８以下
本発明者の検討によれば、ＧａおよびＩｎは、その合計量だけでなく、ＧａおよびＩｎの合計の含有量に対するＧａの含有量の割合も、ロウ付けの作業性に大きく影響する。具体的には、上記割合が０．６５以上０．８以下の範囲を外れると、ホワイトゴールド合金ロウ材の液相点温度と固相点温度との差がロウ付けの作業性を悪化させる程度に大きくなる。ロウ付けの優れた作業性を確保する観点から、ＧａおよびＩｎの合計の含有量に対するＧａの含有量の割合は０．６５以上０．８以下とする必要があり、０．６５以上０．７５以下とすることが好ましい。 Ratio of the content of Ga to the total content of Ga and In: 0.65 or more and 0.8 or less According to the study by the present inventor, not only the total content of Ga and In but also the total content of Ga and In The ratio of the content of Ga to the content of Ga also greatly affects the workability of brazing. Specifically, when the ratio is out of the range of 0.65 or more and 0.8 or less, the difference between the liquidus temperature and the solidus temperature of the white gold alloy brazing material deteriorates the workability of brazing. Grows to. From the viewpoint of ensuring excellent workability of brazing, the ratio of the Ga content to the total content of Ga and In must be 0.65 or more and 0.8 or less, and 0.65 or more and 0.75 or less. The following is preferable.
本発明者の検討によれば、ＧａおよびＩｎは、その合計量だけでなく、ＧａおよびＩｎの合計の含有量に対するＧａの含有量の割合も、ロウ付けの作業性に大きく影響する。具体的には、上記割合が０．６５以上０．８以下の範囲を外れると、ホワイトゴールド合金ロウ材の液相点温度と固相点温度との差がロウ付けの作業性を悪化させる程度に大きくなる。ロウ付けの優れた作業性を確保する観点から、ＧａおよびＩｎの合計の含有量に対するＧａの含有量の割合は０．６５以上０．８以下とする必要があり、０．６５以上０．７５以下とすることが好ましい。 Ratio of the content of Ga to the total content of Ga and In: 0.65 or more and 0.8 or less According to the study by the present inventor, not only the total content of Ga and In but also the total content of Ga and In The ratio of the content of Ga to the content of Ga also greatly affects the workability of brazing. Specifically, when the ratio is out of the range of 0.65 or more and 0.8 or less, the difference between the liquidus temperature and the solidus temperature of the white gold alloy brazing material deteriorates the workability of brazing. Grows to. From the viewpoint of ensuring excellent workability of brazing, the ratio of the Ga content to the total content of Ga and In must be 0.65 or more and 0.8 or less, and 0.65 or more and 0.75 or less. The following is preferable.
不可避的不純物
ホワイトゴールド合金ロウ材には、製造時に不可避的に（意図的でなく）不純物（不可避的不純物）が混入する場合がある。不可避的不純物の含有量は少ないことが好ましく、具体的には０．１質量％以下とすることが好ましく、０．０５質量％以下とすることがより好ましい。 Inevitable Impurities In some cases, the white gold alloy brazing material is unavoidably (unintentionally) mixed with impurities (unavoidable impurities) during manufacturing. The content of unavoidable impurities is preferably small, specifically 0.1 mass% or less, and more preferably 0.05 mass% or less.
ホワイトゴールド合金ロウ材には、製造時に不可避的に（意図的でなく）不純物（不可避的不純物）が混入する場合がある。不可避的不純物の含有量は少ないことが好ましく、具体的には０．１質量％以下とすることが好ましく、０．０５質量％以下とすることがより好ましい。 Inevitable Impurities In some cases, the white gold alloy brazing material is unavoidably (unintentionally) mixed with impurities (unavoidable impurities) during manufacturing. The content of unavoidable impurities is preferably small, specifically 0.1 mass% or less, and more preferably 0.05 mass% or less.
［実施形態の具体例］
次に、本開示のホワイトゴールド合金ロウ材の具体的な実施形態を、本開示のホワイトゴールド合金ロウ材の特性を確認する実験結果とともに説明する。以下の表１に示す成分組成を有するホワイトゴールド合金ロウ材を準備した。 [Specific Example of Embodiment]
Next, specific embodiments of the white gold alloy brazing material of the present disclosure will be described together with experimental results for confirming the characteristics of the white gold alloy brazing material of the present disclosure. A white gold alloy brazing material having the composition shown in Table 1 below was prepared.
次に、本開示のホワイトゴールド合金ロウ材の具体的な実施形態を、本開示のホワイトゴールド合金ロウ材の特性を確認する実験結果とともに説明する。以下の表１に示す成分組成を有するホワイトゴールド合金ロウ材を準備した。 [Specific Example of Embodiment]
Next, specific embodiments of the white gold alloy brazing material of the present disclosure will be described together with experimental results for confirming the characteristics of the white gold alloy brazing material of the present disclosure. A white gold alloy brazing material having the composition shown in Table 1 below was prepared.
（１）色差
各サンプルの表面を研磨し、当該表面について、市販のホワイトゴールド合金（Ｌ＊＝７２．７、ａ＊＝１．３、ｂ＊＝７．５）との色差（ΔＥ＊）を測定した。 (1) Color difference The surface of each sample was polished, and the color difference (ΔE * ) from the commercially available white gold alloy (L * = 72.7, a * = 1.3, b * = 7.5) was polished. Was measured.
各サンプルの表面を研磨し、当該表面について、市販のホワイトゴールド合金（Ｌ＊＝７２．７、ａ＊＝１．３、ｂ＊＝７．５）との色差（ΔＥ＊）を測定した。 (1) Color difference The surface of each sample was polished, and the color difference (ΔE * ) from the commercially available white gold alloy (L * = 72.7, a * = 1.3, b * = 7.5) was polished. Was measured.
（２）融点の測定
各サンプルについて、示差熱分析（Ｄｉｆｆｅｒｅｎｔｉａｌ Ｔｈｅｒｍａｌ Ａｎａｌｙｓｉｓ；ＤＴＡ）を実施し、固相点温度および液相点温度を調査した。また、固相点温度と液相点温度との差を算出した。 (2) Measurement of melting point For each sample, a differential thermal analysis (DTA) was carried out to investigate a solidus temperature and a liquidus temperature. Also, the difference between the solidus temperature and the liquidus temperature was calculated.
各サンプルについて、示差熱分析（Ｄｉｆｆｅｒｅｎｔｉａｌ Ｔｈｅｒｍａｌ Ａｎａｌｙｓｉｓ；ＤＴＡ）を実施し、固相点温度および液相点温度を調査した。また、固相点温度と液相点温度との差を算出した。 (2) Measurement of melting point For each sample, a differential thermal analysis (DTA) was carried out to investigate a solidus temperature and a liquidus temperature. Also, the difference between the solidus temperature and the liquidus temperature was calculated.
上記特性の評価結果を表２に示す。
Table 2 shows the evaluation results of the above characteristics.
表２を参照して、色差の値から、サンプルＮｏ．１、２および１０は、いずれもホワイトゴールド合金の色味を有していることが確認される。
Referring to Table 2, from the value of color difference, sample No. It is confirmed that each of 1, 2, and 10 has a white gold alloy tint.
また、表２より、Ｐｄ、Ｚｎ、ＧａおよびＩｎの含有量が、サンプルの融点（固相点温度および液相点温度）に大きく影響していることが分かる。そして、ＰｄおよびＺｎの含有量、ＧａおよびＩｎの含有量の合計およびＧａおよびＩｎの合計の含有量に対するＧａの含有量の割合が上記本開示のホワイトゴールド合金ロウ材の要件を満たす実施例のサンプル（サンプルＮｏ．１～４）においては、融点（特に液相点）温度が、ロウ付けにより接合されるべき部材を構成する材料として想定される金属（たとえばホワイトゴールド合金）の融点よりも十分に低い。そのため、実施例のホワイトゴールド合金ロウ材を採用することで、ロウ付けの作業を容易に実施することができる。
Further, it can be seen from Table 2 that the contents of Pd, Zn, Ga and In greatly influence the melting point (solidus temperature and liquidus temperature) of the sample. The Pd and Zn contents, the total Ga and In contents, and the ratio of the Ga content to the total Ga and In contents satisfy the requirements of the white gold alloy brazing material of the present disclosure. In the samples (Sample Nos. 1 to 4), the melting point (particularly the liquidus point) temperature is sufficiently higher than the melting point of the metal (for example, white gold alloy) assumed as the material forming the members to be joined by brazing. Very low. Therefore, the brazing work can be easily performed by using the white gold alloy brazing material of the embodiment.
さらに、表２を参照して、Ｚｎの含有量、ＧａおよびＩｎの含有量の合計、ならびにＧａおよびＩｎの合計の含有量に対するＧａの含有量の割合が、サンプルの液相点温度と固相点温度との差に大きく影響していることが分かる。そして、Ｚｎの含有量、ＧａおよびＩｎの含有量の合計、ならびにＧａおよびＩｎの合計の含有量に対するＧａの含有量の割合が上記本開示のホワイトゴールド合金ロウ材の要件を満たす実施例のサンプル（サンプルＮｏ．１～４）においては、液相点温度と固相点温度との差が十分に小さい。そのため、実施例のホワイトゴールド合金ロウ材を採用することで、ロウの流れが良好となり、ロウ付けの作業を容易に実施することができる。また、液相点温度と固相点温度との差が十分に小さいことにより、たとえば接合後のホワイトゴールド合金ロウ材において、場所による組成の違いを低減することができる。
Further, with reference to Table 2, the Zn content, the total content of Ga and In, and the ratio of the Ga content to the total content of Ga and In are determined as follows: It can be seen that the difference with the point temperature is greatly affected. Then, samples of Examples in which the content of Zn, the total content of Ga and In, and the ratio of the content of Ga to the total content of Ga and In satisfy the requirements of the white gold alloy brazing material of the present disclosure described above. In (Sample Nos. 1 to 4), the difference between the liquidus temperature and the solidus temperature is sufficiently small. Therefore, by adopting the white gold alloy brazing material of the embodiment, the flow of the brazing becomes good, and the brazing work can be carried out easily. Further, since the difference between the liquidus temperature and the solidus temperature is sufficiently small, it is possible to reduce the difference in composition depending on the location, for example, in the white gold alloy brazing material after joining.
以上の特性評価の結果から、本開示のホワイトゴールド合金ロウ材は、色味が代表的なホワイトゴールド合金などに近い白色であるとともに、ロウ付けの作業性に優れていることが確認される。したがって、本開示のホワイトゴールド合金ロウ材は、たとえばホワイトゴールド合金製の宝飾品を接合するためのロウ材として好適である。
From the results of the above characteristic evaluation, it is confirmed that the white gold alloy brazing material according to the present disclosure has a white color close to that of a typical white gold alloy and has excellent brazing workability. Therefore, the white gold alloy brazing material of the present disclosure is suitable as a brazing material for joining jewelry made of white gold alloy, for example.
今回開示された実施の形態はすべての点で例示であって、どのような面からも制限的なものではないと理解されるべきである。本発明の範囲は上記した説明ではなく、請求の範囲によって規定され、請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。
It should be understood that the embodiments disclosed this time are exemplifications in all respects and are not restrictive in any way. The scope of the present invention is defined not by the above description but by the claims, and is intended to include meanings equivalent to the claims and all modifications within the scope.
Claims (1)
- ７４質量％以上７８質量％以下のＡｕと、
１２質量％以上１６質量％以下のＰｄと、
３質量％以上７質量％以下のＺｎと、
合計で４質量％以上７質量％以下のＧａおよびＩｎと、を含有し、
残部が不可避的不純物からなり、
ＧａおよびＩｎの合計の含有量に対するＧａの含有量の割合は０．６５以上０．８以下である、ホワイトゴールド合金ロウ材。
74% by mass or more and 78% by mass or less of Au,
12% by mass or more and 16% by mass or less of Pd,
Zn of 3 mass% or more and 7 mass% or less,
Containing 4% by mass or more and 7% by mass or less of Ga and In in total,
The balance consists of inevitable impurities,
A white gold alloy brazing material, wherein the ratio of the content of Ga to the total content of Ga and In is 0.65 or more and 0.8 or less.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020523831A JP6749684B1 (en) | 2020-02-04 | 2020-02-04 | White gold alloy brazing material |
| PCT/JP2020/004092 WO2020091082A2 (en) | 2020-02-04 | 2020-02-04 | White gold alloy brazing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2020/004092 WO2020091082A2 (en) | 2020-02-04 | 2020-02-04 | White gold alloy brazing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2020091082A2 true WO2020091082A2 (en) | 2020-05-07 |
| WO2020091082A3 WO2020091082A3 (en) | 2020-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2020/004092 WO2020091082A2 (en) | 2020-02-04 | 2020-02-04 | White gold alloy brazing material |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6749684B1 (en) |
| WO (1) | WO2020091082A2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4014690A (en) * | 1976-05-14 | 1977-03-29 | Howmedica, Inc. | Gold-colored alloy solders |
| DE2638837C3 (en) * | 1976-08-28 | 1979-06-07 | W.C. Heraeus Gmbh, 6450 Hanau | Gold-based dental solder alloy |
| JP2922227B2 (en) * | 1989-10-16 | 1999-07-19 | 株式会社徳力本店 | Decorative white gold alloy |
-
2020
- 2020-02-04 JP JP2020523831A patent/JP6749684B1/en active Active
- 2020-02-04 WO PCT/JP2020/004092 patent/WO2020091082A2/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| JP6749684B1 (en) | 2020-09-02 |
| WO2020091082A3 (en) | 2020-06-18 |
| JPWO2020091082A1 (en) | 2021-02-15 |
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