JP2013134889A - Electrical contact material and manufacturing method of the same - Google Patents
Electrical contact material and manufacturing method of the same Download PDFInfo
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Abstract
Description
本発明は、マグネットスイッチ、ブレーカ、リレー等の電磁開閉器に使用される電気接点材料に関する。 The present invention relates to an electrical contact material used for an electromagnetic switch such as a magnet switch, a breaker, or a relay.
従来、酸化物形態の異なる酸化層を複数層積層させたＡｇー酸化物系電気接点材料は、内部酸化時の酸化温度および酸素分圧を変化させながら内部酸化を施すことにより、Ａｇー酸化物系電気接点材料の最大の特長であるＡｇマトリックス中における析出酸化物について、その形態が異なる酸化物を析出させた層を複数層積み上げて積層構造とし、その積層構造によってＡｇマトリックス中の酸化物の移動を抑制して接点表面への酸化物の凝集を防ぎ、接触抵抗の増加による温度上昇を防いでいる（例えば、特許文献１参照）。 Conventionally, an Ag-oxide-based electrical contact material in which a plurality of oxide layers having different oxide forms are laminated is obtained by applying internal oxidation while changing the oxidation temperature and oxygen partial pressure during internal oxidation. As for the precipitated oxide in the Ag matrix, which is the greatest feature of the electrical contact material, a plurality of layers in which different types of oxides are deposited are stacked to form a laminated structure, and the laminated structure of the oxide in the Ag matrix The movement is suppressed to prevent the oxide from aggregating on the contact surface, and the temperature rise due to the increase of the contact resistance is prevented (for example, see Patent Document 1).
このようなＡｇー酸化物系の電気接点材料は、耐溶着性、耐消耗性、温度特性の向上のために内部酸化条件の変更や第３元素、第４元素の添加によりその都度性能的な課題を克服してきた（例えば、特許文献２、特許文献３）。 Such an Ag-oxide-based electrical contact material is improved in performance by changing internal oxidation conditions or adding third and fourth elements in order to improve welding resistance, wear resistance, and temperature characteristics. The problem has been overcome (for example, Patent Document 2 and Patent Document 3).
しかし、上記の従来技術によると、Ａｇー酸化物系の電気接点材料は、電気的開閉を繰り返すことにより、接点の表層に酸化物が堆積し、それが要因となって接点表面における接触抵抗を引き上げ、温度上昇を引き起こすという問題がある。 However, according to the above prior art, the Ag-oxide-based electrical contact material accumulates oxide on the surface layer of the contact by repeating electrical switching, which causes the contact resistance on the contact surface to decrease. There is a problem of raising the temperature and causing a temperature rise.
この温度上昇の問題を克服するためには、添加する酸化物量を減少させる等の方法により解決することができるが、添加する酸化物量を減少させると、耐溶着性、耐消耗性を引き下げることになる。 In order to overcome this problem of temperature rise, it can be solved by a method such as reducing the amount of oxide to be added, but reducing the amount of oxide to be added reduces the welding resistance and wear resistance. Become.
以上のことから、安定した接触抵抗により実現される優れた温度特性の実現と耐溶着性、耐消耗性の向上という性能は互いに相反する部分があり、接点材料の選択に当たっての問題となっている。 From the above, the performance of excellent temperature characteristics realized by stable contact resistance and the performance of improvement of welding resistance and wear resistance are in conflict with each other, which is a problem in selecting contact materials .
そこで本発明は、酸化物形態の異なる酸化層を複数層積層させることとし、そのＡｇー酸化物系電気接点材料に、１〜９９質量％Ａｇ−Ｗ、１〜９９質量％Ａｇ−ＷＣ、ＷＣおよびＷの内の１種以上で１層の厚みを０．１〜１０００μｍとしたコーティングを施すことにより構成する。 Therefore, in the present invention, a plurality of oxide layers having different oxide forms are laminated, and the Ag-oxide-based electrical contact material includes 1 to 99 mass% Ag-W, 1 to 99 mass% Ag-WC, and WC. And a coating of one or more of W and a thickness of one layer of 0.1 to 1000 μm.
ここで、コーティング層の１層の厚みを０．１〜１０００μｍとした理由は、１層の厚みが０．１μｍ未満ではコーティングの効果がないためであり、また、１０００μｍを超えると技術および生産コストの面からコーティングを行うことが難しいからである。 Here, the reason why the thickness of one layer of the coating layer is 0.1 to 1000 μm is that if the thickness of one layer is less than 0.1 μm, there is no effect of coating, and if it exceeds 1000 μm, the technology and production cost are increased. This is because it is difficult to perform coating from the surface.
なお、コーティングの方法は、プラズマ溶射、ガス溶射、高速フレーム溶射、コールドスプレー等の溶射でのコーティング、気中や液中での断続的な放電、パルス等の放電によるコーティングおよびＰＶＤ（Ｐｈｙｓｉｃａｌ Ｖａｐｏｒ Ｄｅｐｏｓｉｔｉｏｎ）、ＣＶＤ（Ｃｅｍｉｃａｌ Ｖａｐｏｒ Ｄｅｐｏｓｉｔｉｏｎ）等の蒸着法によるコーティングである。 Coating methods include plasma spraying, gas spraying, high-speed flame spraying, cold spray coating, etc., intermittent discharge in air or liquid, coating by discharge such as pulses, and PVD (Physical Vapor Deposition). ) And CVD (Chemical Vapor Deposition).
以上のＡｇー酸化物系の電気接点材料によると、接点材料の表面に上記条件のコーティングを施すことにより、耐溶着性、耐消耗性、接触抵抗等の諸電気特性が向上した接点材料となる。 According to the above-described Ag-oxide-based electrical contact material, a contact material having improved electrical characteristics such as welding resistance, wear resistance, contact resistance and the like is obtained by coating the surface of the contact material with the above conditions. .
本発明の実施例を説明する。 Examples of the present invention will be described.
板厚１．０ｍｍ、３．０ｍｍ角の材料を、酸素分圧０．５〜１．０ＭＰａ、内部酸化温度を４００°Ｃ〜７００°Ｃとし、周期的に変化させて１００時間で内部酸化させることにより９０．５質量％Ａｇ−５．８質量％ＳｎＯ2−３．５質量％Ｉｎ2Ｏ3−０．２質量％ＮｉＯの酸化物形態の異なる酸化層を複数層有する接点材料を作製する。 A material having a plate thickness of 1.0 mm and a 3.0 mm square is subjected to internal oxidation in 100 hours with an oxygen partial pressure of 0.5 to 1.0 MPa and an internal oxidation temperature of 400 ° C. to 700 ° C., which are periodically changed. producing 90.5 wt% Ag-5.8 mass% SnO 2 -3.5 wt% in 2 O 3 -0.2 wt% NiO contact material having multiple layers of different oxide layer of oxide forms of by .
上記接点材料２の接点表面にブラスト処理を行った後、コーティング層の厚さ８００μｍ、コーティング層の組成を１質量％Ａｇ−Ｗとして気中放電によって行った（図１）。その気中放電の条件は、陽極１に１質量％Ａｇ−Ｗ、陰極に上記記載の接点材料２を用いて大気中にて、電流１〜３Ａ、電圧６０Ｖ、放電距離１ｍｍ、３００〜４００Ｈｚで振動させ、断続的に放電させることによりコーティング層３を形成した（図３）。 After blasting the contact surface of the contact material 2, the coating layer was 800 μm thick and the coating layer composition was 1% by mass Ag—W by air discharge (FIG. 1). The air discharge conditions were as follows: 1 mass% Ag-W for the anode 1 and the contact material 2 described above for the cathode in the atmosphere, current 1 to 3 A, voltage 60 V, discharge distance 1 mm, 300 to 400 Hz. The coating layer 3 was formed by vibrating and intermittently discharging (FIG. 3).
上記実施例１に用いたと同様の接点材料の接点表面にブラスト処理を行った後、コーティング層の厚さ１００μｍ、コーティング層の組成を１質量％Ａｇ−ＷＣとして気中放電によって行った（図１）。その気中放電の条件は、陽極に１質量％Ａｇ−ＷＣ、陰極に上記記載の接点材料を用いて大気中にて、電流１〜３Ａ、電圧６０Ｖ、放電距離１ｍｍ、３００〜４００Ｈｚで振動させ、断続的に放電させることにより部分的にコーティングを行った（図４）。 After blasting the contact surface of the same contact material as used in Example 1, the coating layer thickness was 100 μm, and the coating layer composition was 1 mass% Ag-WC, which was performed by air discharge (FIG. 1). ). The air discharge conditions were as follows: 1 mass% Ag-WC for the anode and contact materials described above for the cathode were used in the atmosphere to vibrate at a current of 1 to 3 A, a voltage of 60 V, a discharge distance of 1 mm, and 300 to 400 Hz. The coating was partially performed by intermittent discharge (FIG. 4).
上記実施例１に用いたと同様の接点材料の接点表面にブラスト処理を行った後、プラズマ溶射にてコーティングを行った。 The contact surface of the same contact material as used in Example 1 was blasted and then coated by plasma spraying.
プラズマ溶射の条件は、プラズマジェット雰囲気中に粒度５〜１２５μｍのＡｇ粉末とＷ粉末を５０：５０になるように混入し、大気中にて、ジェット電流５００〜８００Ａ、溶射距離１００ｍｍ、プラズマガスにはアルゴンを使用（流量３０ｌ／ｍｉｎ）し、溶射ガンを３００ｍｍ／ｓｅｃにて往復運動させ、コーティング層の厚さ０．１μｍ、コーティング層の組成を５０質量％Ａｇ−Ｗとしてコーティングを行った（図３）。 The plasma spraying conditions are as follows: Ag powder having a particle size of 5 to 125 μm and W powder are mixed in a plasma jet atmosphere so as to have a ratio of 50:50. In the atmosphere, a jet current of 500 to 800 A, a spraying distance of 100 mm, Used argon (flow rate 30 l / min), reciprocated the spray gun at 300 mm / sec, and coated with a coating layer thickness of 0.1 μm and a coating layer composition of 50 mass% Ag-W ( FIG. 3).
上記実施例１に用いたと同様の接点材料の接点表面にブラスト処理を行った後、プラズマ溶射にてコーティングを行った。 The contact surface of the same contact material as used in Example 1 was blasted and then coated by plasma spraying.
プラズマ溶射の条件は、プラズマジェット雰囲気中に粒度５〜１２５μｍのＡｇ粉末とＷＣ粉末を５０：５０になるように混入し、大気中にて、ジェット電流５００〜８００Ａ、溶射距離１００ｍｍ、プラズマガスにはアルゴンを使用（流量３０ｌ／ｍｉｎ）し、溶射ガンを３００ｍｍ／ｓｅｃにて往復運動させ、コーティング層の厚さ２０μｍ、コーティング層の組成を５０質量％Ａｇ−ＷＣとしてコーティングを行った（図３）。 The plasma spraying conditions are as follows: Ag powder having a particle size of 5 to 125 μm and WC powder are mixed in a plasma jet atmosphere so as to have a ratio of 50:50, and a jet current of 500 to 800 A, a spraying distance of 100 mm, Used argon (flow rate 30 l / min), and the spray gun was reciprocated at 300 mm / sec to coat the coating layer with a thickness of 20 μm and a coating layer composition of 50 mass% Ag-WC (FIG. 3). ).
上記実施例１に用いたと同様の接点材料の接点表面にブラスト処理を行った後、プラズマ溶射にてコーティングを行った。 The contact surface of the same contact material as used in Example 1 was blasted and then coated by plasma spraying.
プラズマ溶射の条件は、プラズマジェット雰囲気中に粒度５〜１２５μｍのＡｇ粉末とＷ粉末を５０：５０になるように混入し、大気中にて、ジェット電流５００〜８００Ａ、溶射距離１００ｍｍ、プラズマガスにはアルゴンを使用（流量３０ｌ／ｍｉｎ）し、溶射ガンを３００ｍｍ／ｓｅｃにて往復運動させ、コーティング層の厚さ５００μｍ、コーティング層の組成を９９質量％Ａｇ−Ｗとしてコーティングを行った（図３）。 The plasma spraying conditions are as follows: Ag powder having a particle size of 5 to 125 μm and W powder are mixed in a plasma jet atmosphere so as to have a ratio of 50:50. In the atmosphere, a jet current of 500 to 800 A, a spraying distance of 100 mm, Used argon (flow rate 30 l / min), and the spray gun was reciprocated at 300 mm / sec to coat the coating layer with a thickness of 500 μm and a coating layer composition of 99 mass% Ag-W (FIG. 3). ).
上記実施例１に用いたと同様の接点材料の接点表面にブラスト処理を行った後、プラズマ溶射にてコーティングを行った。
プラズマ溶射の条件は、プラズマジェット雰囲気中に粒度５〜１２５μｍのＡｇ粉末とＷＣ粉末を５０：５０になるように混入し、大気中にて、ジェット電流５００〜８００Ａ、溶射距離１００ｍｍ、プラズマガスにはアルゴンを使用（流量３０ｌ／ｍｉｎ）し、溶射ガンを３００ｍｍ／ｓｅｃにて往復運動させ、コーティング層の厚さ１０００μｍ、コーティング層の組成を９９質量％Ａｇ−ＷＣとしてコーティングを行った（図３）。
The contact surface of the same contact material as used in Example 1 was blasted and then coated by plasma spraying.
The plasma spraying conditions are as follows: Ag powder having a particle size of 5 to 125 μm and WC powder are mixed in a plasma jet atmosphere so as to have a ratio of 50:50, and a jet current of 500 to 800 A, a spraying distance of 100 mm, Used argon (flow rate 30 l / min), and the spray gun was reciprocated at 300 mm / sec to coat the coating layer with a thickness of 1000 μm and a coating layer composition of 99 mass% Ag-WC (FIG. 3). ).
上記実施例１に用いたと同様の接点材料の接点表面にブラスト処理を行った後、プラズマ溶射にてコーティングを行った。 The contact surface of the same contact material as used in Example 1 was blasted and then coated by plasma spraying.
プラズマ溶射の条件は、プラズマジェット雰囲気中に粒度５〜１２５μｍのＡｇ粉末とＷ粉末を５０：５０になるように混入し、大気中にて、ジェット電流５００〜８００Ａ、溶射距離１００ｍｍ、プラズマガスにはアルゴンを使用（流量３０ｌ／ｍｉｎ）し、溶射ガンを３００ｍｍ／ｓｅｃにて往復運動させ、コーティング層の厚さ３００μｍ、コーティング層の組成をＷとしてコーティングを行った（図３）。 The plasma spraying conditions are as follows: Ag powder having a particle size of 5 to 125 μm and W powder are mixed in a plasma jet atmosphere so as to have a ratio of 50:50. In the atmosphere, a jet current of 500 to 800 A, a spraying distance of 100 mm, Used argon (flow rate 30 l / min), and the thermal spray gun was reciprocated at 300 mm / sec, coating was performed with a coating layer thickness of 300 μm and a coating layer composition of W (FIG. 3).
上記実施例１に用いたと同様の接点材料の接点表面にブラスト処理を行った後、プラズマ溶射にてコーティングを行った。 The contact surface of the same contact material as used in Example 1 was blasted and then coated by plasma spraying.
プラズマ溶射の条件は、プラズマジェット雰囲気中に粒度５〜１２５μｍのＡｇ粉末とＷＣ粉末を５０：５０になるように混入し、大気中にて、ジェット電流５００〜８００Ａ、溶射距離１００ｍｍ、プラズマガスにはアルゴンを使用（流量３０ｌ／ｍｉｎ）し、溶射ガンを３００ｍｍ／ｓｅｃにて往復運動させ、コーティング層の厚さ６００μｍ、コーティング層の組成をＷＣとしてコーティングを行った（図３）。 The plasma spraying conditions are as follows: Ag powder having a particle size of 5 to 125 μm and WC powder are mixed in a plasma jet atmosphere so as to have a ratio of 50:50, and a jet current of 500 to 800 A, a spraying distance of 100 mm, Used argon (flow rate 30 l / min), and the thermal spray gun was reciprocated at 300 mm / sec to perform coating with a coating layer thickness of 600 μm and a coating layer composition of WC (FIG. 3).
上記実施例１に用いたと同様の接点材料の接点表面にブラスト処理を行った後、プラズマ溶射にてコーティングを行った。 The contact surface of the same contact material as used in Example 1 was blasted and then coated by plasma spraying.
プラズマ溶射の条件は、プラズマジェット雰囲気中に粒度５〜１２５μｍのＡｇ粉末とＷ粉末およびＡｇ粉末とＷＣ粉末とをそれぞれ５０：５０になるように混入し、大気中にて、ジェット電流５００〜８００Ａ、溶射距離１００ｍｍ、プラズマガスにはアルゴンを使用（流量３０ｌ／ｍｉｎ）し、溶射ガンを３００ｍｍ／ｓｅｃにて往復運動させ、コーティング層の１層の厚さを５０μｍ、コーティング層の組成を１質量％Ａｇ−Ｗ４と１質量％Ａｇ−ＷＣ５として交互に８層のコーティングを行った（図５）。 The plasma spraying conditions were as follows: Ag powder and W powder having a particle size of 5 to 125 μm and Ag powder and WC powder were mixed in a plasma jet atmosphere so as to have a ratio of 50:50, respectively. The spraying distance is 100 mm, the plasma gas is argon (flow rate 30 l / min), the spraying gun is reciprocated at 300 mm / sec, the thickness of one coating layer is 50 μm, and the coating layer composition is 1 mass. Eight layers of coating were alternately carried out as% Ag-W4 and 1% by mass Ag-WC5 (FIG. 5).
上記実施例１に用いたと同様の接点材料の接点表面にブラスト処理を行った後、プラズマ溶射にてコーティングを行った。 The contact surface of the same contact material as used in Example 1 was blasted and then coated by plasma spraying.
プラズマ溶射の条件は、プラズマジェット雰囲気中に粒度５〜１２５μｍのＡｇ粉末とＷ粉末およびＡｇ粉末とＷＣ粉末とをそれぞれ５０：５０になるように混入し、大気中にて、ジェット電流５００〜８００Ａ、溶射距離１００ｍｍ、プラズマガスにはアルゴンを使用（流量３０ｌ／ｍｉｎ）し、溶射ガンを３００ｍｍ／ｓｅｃにて往復運動させ、コーティング層の１層の厚さを５０μｍ、コーティング層の組成を５０質量％Ａｇ−Ｗ６と５０質量％Ａｇ−ＷＣ７として交互に６層のコーティングを行った（図６）。 The plasma spraying conditions were as follows: Ag powder and W powder having a particle size of 5 to 125 μm and Ag powder and WC powder were mixed in a plasma jet atmosphere so as to have a ratio of 50:50, respectively. The spraying distance is 100 mm, argon is used as the plasma gas (flow rate 30 l / min), the spraying gun is reciprocated at 300 mm / sec, the thickness of one coating layer is 50 μm, and the composition of the coating layer is 50 mass. Six layers of coating were alternately performed as% Ag-W6 and 50% by mass Ag-WC7 (FIG. 6).
上記実施例１に用いたと同様の接点材料の接点表面にブラスト処理を行った後、プラズマ溶射にてコーティングを行った。 The contact surface of the same contact material as used in Example 1 was blasted and then coated by plasma spraying.
プラズマ溶射の条件は、プラズマジェット雰囲気中に粒度５〜１２５μｍのＡｇ粉末とＷ粉末およびＡｇ粉末とＷＣ粉末とをそれぞれ５０：５０になるように混入し、大気中にて、ジェット電流５００〜８００Ａ、溶射距離１００ｍｍ、プラズマガスにはアルゴンを使用（流量３０ｌ／ｍｉｎ）し、溶射ガンを３００ｍｍ／ｓｅｃにて往復運動させ、コーティング層の１層の厚さを５０μｍ、コーティング層の組成を９９質量％Ａｇ−Ｗ８と９９質量％Ａｇ−ＷＣ９として交互に４層のコーティングを行った（図７）。 The plasma spraying conditions were as follows: Ag powder and W powder having a particle size of 5 to 125 μm and Ag powder and WC powder were mixed in a plasma jet atmosphere so as to have a ratio of 50:50, respectively. The spraying distance is 100 mm, the plasma gas is argon (flow rate 30 l / min), the spray gun is reciprocated at 300 mm / sec, the thickness of one coating layer is 50 μm, and the coating layer composition is 99 mass. Four layers of coating were alternately performed as% Ag-W8 and 99% by mass Ag-WC9 (FIG. 7).
上記実施例１に用いたと同様の接点材料の接点表面にブラスト処理を行った後、プラズマ溶射にてコーティングを行った。 The contact surface of the same contact material as used in Example 1 was blasted and then coated by plasma spraying.
プラズマ溶射の条件は、プラズマジェット雰囲気中に粒度５〜１２５μｍのＡｇ粉末とＷ粉末およびＡｇ粉末とＷＣ粉末とをそれぞれ５０：５０になるように混入し、大気中にて、ジェット電流５００〜８００Ａ、溶射距離１００ｍｍ、プラズマガスにはアルゴンを使用（流量３０ｌ／ｍｉｎ）し、溶射ガンを３００ｍｍ／ｓｅｃにて往復運動させ、コーティング層の１層の厚さを５０μｍ、コーティング層の組成をＷ１０とＷＣ１１として交互に２層のコーティングを行った（図８）。 The plasma spraying conditions were as follows: Ag powder and W powder having a particle size of 5 to 125 μm and Ag powder and WC powder were mixed in a plasma jet atmosphere so as to have a ratio of 50:50, respectively. The spraying distance is 100 mm, argon is used as the plasma gas (flow rate 30 l / min), the spray gun is reciprocated at 300 mm / sec, the thickness of one coating layer is 50 μm, and the composition of the coating layer is W10. Two layers of coating were alternately performed as WC11 (FIG. 8).
上記実施例１に用いたと同様の接点材料の接点表面にブラスト処理を行った後、プラズマ溶射にてコーティングを行った。 The contact surface of the same contact material as used in Example 1 was blasted and then coated by plasma spraying.
プラズマ溶射の条件は、プラズマジェット雰囲気中に粒度５〜１２５μｍのＡｇ粉末とＷ粉末を９９：１になるように混入し、徐々にＷ粉末を増量して段階的に組成を傾斜変化させ、大気中にて、ジェット電流５００〜８００Ａ、溶射距離１００ｍｍ、プラズマガスにはアルゴンを使用（流量３０ｌ／ｍｉｎ）し、溶射ガンを３００ｍｍ／ｓｅｃにて往復運動させ、コーティング層の１層の厚さを１００μｍ、コーティング層の組成を下から９９質量％Ａｇ−Ｗ８、７５質量％Ａｇ−Ｗ１３、５０質量％Ａｇ−Ｗ６、２５質量％Ａｇ−Ｗ１２、１質量％Ａｇ−Ｗ４としてコーティングを行った（図９）。 The plasma spraying conditions are as follows: Ag powder having a particle size of 5 to 125 μm and W powder are mixed in a plasma jet atmosphere so that the ratio becomes 99: 1. Inside, jet current 500-800A, spray distance 100mm, argon is used as plasma gas (flow rate 30l / min), and spray gun is reciprocated at 300mm / sec. The coating was performed with the composition of 100 μm and the coating layer from the bottom of 99 mass% Ag-W8, 75 mass% Ag-W13, 50 mass% Ag-W6, 25 mass% Ag-W12, 1 mass% Ag-W4 (Fig. 9).
上記実施例１に用いたと同様の接点材料の接点表面にブラスト処理を行った後、プラズマ溶射にてコーティングを行った。 The contact surface of the same contact material as used in Example 1 was blasted and then coated by plasma spraying.
プラズマ溶射の条件は、プラズマジェット雰囲気中に粒度５〜１２５μｍのＡｇ粉末とＷＣ粉末を９９：１になるように混入し、徐々にＷＣ粉末を増量して段階的に組成を傾斜変化させ、大気中にて、ジェット電流５００〜８００Ａ、溶射距離１００ｍｍ、プラズマガスにはアルゴンを使用（流量３０ｌ／ｍｉｎ）し、溶射ガンを３００ｍｍ／ｓｅｃにて往復運動させ、コーティング層の１層の厚さを１００μｍ、コーティング層の組成を下から９９質量％Ａｇ−ＷＣ９、７５質量％Ａｇ−ＷＣ１５、５０質量％Ａｇ−ＷＣ７、２５質量％Ａｇ−ＷＣ１４、１質量％Ａｇ−ＷＣ５としてコーティングを行った（図１０）。 The plasma spraying conditions were as follows: Ag powder having a particle size of 5 to 125 μm and WC powder were mixed in a plasma jet atmosphere so that the ratio was 99: 1, the WC powder was gradually increased, and the composition was gradually changed in gradient. Inside, jet current 500-800A, spray distance 100mm, argon is used as plasma gas (flow rate 30l / min), and spray gun is reciprocated at 300mm / sec. The coating was performed with the composition of 100 μm and the coating layer from the bottom as 99 mass% Ag-WC9, 75 mass% Ag-WC15, 50 mass% Ag-WC7, 25 mass% Ag-WC14, 1 mass% Ag-WC5 (Fig. 10).
比較例１
板厚１．０ｍｍ、３．０ｍｍ角の材料を、酸素分圧０．５〜１．０ＭＰａ、内部酸化温度を４００°Ｃ〜７００°Ｃとし、周期的に変化させて１００時間で内部酸化させることにより９０．５質量％Ａｇ−５．８質量％ＳｎＯ2−３．５質量％Ｉｎ2Ｏ3−０．２質量％ＮｉＯの酸化物形態の異なる酸化層を複数層有する接点材料を作製する。
比較例２
板厚１．０ｍｍ、３．０ｍｍ角の材料を、酸素分圧０．５〜１．０ＭＰａ、内部酸化温度を４００°Ｃ〜７００°Ｃとし、周期的に変化させて１００時間で内部酸化させることにより９２．３質量％Ａｇ−５質量％ＳｎＯ2−２．５質量％Ｉｎ2Ｏ3−０．２質量％ＮｉＯの酸化物形態の異なる酸化層を複数層有する接点材料を作製する。
比較例３
板厚１．０ｍｍ、３．０ｍｍ角の材料を、酸素分圧０．５〜１．０ＭＰａ、内部酸化温度を４００°Ｃ〜７００°Ｃとし、周期的に変化させて１００時間で内部酸化させることにより９１．９質量％Ａｇ−７質量％ＳｎＯ2−１質量％Ｉｎ2Ｏ3−０．１質量％ＮｉＯの酸化物形態の異なる酸化層を複数層有する接点材料を作製する。
Comparative Example 1
A material having a plate thickness of 1.0 mm and a 3.0 mm square is subjected to internal oxidation in 100 hours with an oxygen partial pressure of 0.5 to 1.0 MPa and an internal oxidation temperature of 400 ° C. to 700 ° C., which are periodically changed. making 90.5 wt% Ag-5.8 mass% SnO 2 -3.5 wt% in 2 O 3 -0.2 wt% NiO contact material having multiple layers of different oxide layer of oxide forms of by .
Comparative Example 2
A material having a plate thickness of 1.0 mm and a 3.0 mm square is subjected to internal oxidation in 100 hours with an oxygen partial pressure of 0.5 to 1.0 MPa and an internal oxidation temperature of 400 ° C. to 700 ° C., which are periodically changed. it by making 92.3 wt% Ag-5 weight% SnO 2 -2.5 wt% in 2 O 3 -0.2 wt% NiO contact material having multiple layers of different oxide layer of oxide forms of.
Comparative Example 3
A material having a plate thickness of 1.0 mm and a 3.0 mm square is subjected to internal oxidation in 100 hours with an oxygen partial pressure of 0.5 to 1.0 MPa and an internal oxidation temperature of 400 ° C. to 700 ° C., which are periodically changed. Thus, a contact material having a plurality of oxide layers having different oxide forms of 91.9% by mass, Ag-7% by mass, SnO 2 -1% by mass, In 2 O 3 -0.1% by mass, and NiO is prepared.
以上の各実施例および比較例について接点試験を行った。 A contact test was conducted on each of the above examples and comparative examples.
接点試験は接触抵抗の測定と溶射試験（６０Ａ定格用）ならびにブレーカによる消耗量の測定（ＡＣ２００ ２０Ａ）を行い、電気特性を評価した。 In the contact test, a contact resistance measurement and a thermal spray test (for 60A rating) and a consumption amount measurement using a breaker (AC200 20A) were performed to evaluate electrical characteristics.
１ 電極
２ 接点材料
３ コーティング層
４ １質量％Ａｇ−Ｗ
５ １質量％Ａｇ−ＷＣ
６ ５０質量％Ａｇ−Ｗ
７ ５０質量％Ａｇ−ＷＣ
８ ９９質量％Ａｇ−Ｗ
９ ９９質量％Ａｇ−ＷＣ
１０ Ｗ
１１ ＷＣ
１２ ２５質量％Ａｇ−Ｗ
１３ ７５質量％Ａｇ−Ｗ
１４ ２５質量％Ａｇ−ＷＣ
１５ ７５質量％Ａｇ−ＷＣ
DESCRIPTION OF SYMBOLS 1 Electrode 2 Contact material 3 Coating layer 4 1 mass% Ag-W
5 1% by mass Ag-WC
6 50% by mass Ag-W
7 50 mass% Ag-WC
899 mass% Ag-W
999 mass% Ag-WC
10 W
11 WC
12 25 mass% Ag-W
13 75 mass% Ag-W
14 25 mass% Ag-WC
15 75 mass% Ag-WC
Claims (5)
接点面に１〜９９質量％Ａｇ−Ｗ、１〜９９質量％Ａｇ−ＷＣ、Ｗ、ＷＣの内、１種以上のコーティング層を有することを特徴とする電気接点材料。 In an Ag-oxide-based electrical contact material in which a plurality of oxide layers having different oxide forms are laminated,
An electrical contact material comprising one or more coating layers of 1 to 99 mass% Ag-W, 1 to 99 mass% Ag-WC, W, and WC on a contact surface.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2629954C2 (en) * | 2015-12-28 | 2017-09-05 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Рязанский государственный радиотехнический университет" | Gradiental protective coating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5810319A (en) * | 1981-07-13 | 1983-01-20 | 株式会社東芝 | Composite sintered contact |
| JPS6258524A (en) * | 1985-09-06 | 1987-03-14 | エヌオーケー株式会社 | Electric contact part |
| JP2000251585A (en) * | 1999-02-25 | 2000-09-14 | Toshiba Corp | Arc resistant coating for electric equipment |
| JP2008152971A (en) * | 2006-12-14 | 2008-07-03 | Tokuriki Honten Co Ltd | Ag-oxide based electric contact material and its manufacturing method |
-
2011
- 2011-12-26 JP JP2011284252A patent/JP2013134889A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5810319A (en) * | 1981-07-13 | 1983-01-20 | 株式会社東芝 | Composite sintered contact |
| JPS6258524A (en) * | 1985-09-06 | 1987-03-14 | エヌオーケー株式会社 | Electric contact part |
| JP2000251585A (en) * | 1999-02-25 | 2000-09-14 | Toshiba Corp | Arc resistant coating for electric equipment |
| JP2008152971A (en) * | 2006-12-14 | 2008-07-03 | Tokuriki Honten Co Ltd | Ag-oxide based electric contact material and its manufacturing method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2629954C2 (en) * | 2015-12-28 | 2017-09-05 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Рязанский государственный радиотехнический университет" | Gradiental protective coating |
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