CN100999789A - Preparation process of silver tin oxide electric contact material - Google Patents

Preparation process of silver tin oxide electric contact material Download PDF

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CN100999789A
CN100999789A CN 200610045639 CN200610045639A CN100999789A CN 100999789 A CN100999789 A CN 100999789A CN 200610045639 CN200610045639 CN 200610045639 CN 200610045639 A CN200610045639 A CN 200610045639A CN 100999789 A CN100999789 A CN 100999789A
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silver
powder
tin oxide
contact material
material
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CN 200610045639
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CN100432250C (en )
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李洪锡
夏春明
程陆凡
张湃
张国虎
姜涛
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沈阳金纳新材料有限公司
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Abstract

The preparation process of silver-tin oxide electric contact material features the material comprising 150 mesh SnO2 powder in 2-12 wt% and 50-1000 mesh AgSn alloy powder with Sn content of 1-5 wt% for the rest. The preparation process includes no-air ball milling or forced mixing the said material to obtain compound powder, and forming before or after internal oxidation to produce the electric contact material. Thus process has powder metallurgy and internal oxidation and the prepared silver-tin oxide electric contact material has excellent electric performance and mechanical performance.

Description

一种银氧化锡电触头材料的制备方法 A method for preparing silver-tin oxide contact material is

技术领域 FIELD

:本发明涉及电触头材料的制备技术,特别提供了一种银氧化锡电触头材料制备方法。 : Preparation of Invention The present invention relates to an electrical contact materials, particularly silver tin oxide is provided an electrical contact material prepared in the method.

背景技术 Background technique

:随着现代工业的高速发展,控制电器工业化、智能化水平越来越高,高压输变电网络负荷日益增加,低压配电系统和控制系统不断发展以及电子工业产品的更新换代。 : With the rapid development of modern industry, industrial electrical control, increasing the level of intelligent, high-voltage power transmission network load increasing, the continuous development of low-voltage distribution systems and electronic control systems and upgrading of industrial products. 电器产品向大容量、小体积的方向发展。 Electrical product development in the direction of large capacity, small volume. 随之对电器产品的心脏元件——电触头材料提出了更高的要求,即要求材料在极大的电弧热和焦耳热的情况下,不发生熔焊,机械磨损及耐电磨损性能好;在分断过程中产生的金属飞溅不宜过多,燃弧时间不宜太长;在直流使用环境下,抗熔焊性好,材料迁移少,接触电阻低而稳定。 Followed by electrical products for heart device - electrical contact material put forward higher requirements, which requires materials under extreme conditions of heat and Joule heat of the arc, welding does not occur, good electrical and mechanical abrasion wear resistance ; metal produced in the process of breaking should not be too much splashing, arcing time is not too long; in the DC environment, good welding resistance, less material migration, low and stable contact resistance.

由于AgCdO合金中的CdO可以在高温下分解,起到吸热、降温的作用,所以其具有良好综合性能,加之加工性能好,已广泛的用于低压电器触头领域,但AgCdO在生产和使用过程中容易产生Cd中毒,对生物造成损害,对环境造成污染,为此欧洲和日本纷纷出台法规,严禁在家用电器和汽车电器中使用AgCdO触点。 Since AgCdO CdO alloy can decompose at high temperatures, the endothermic play, cooling effect, it has a good overall performance, combined with good processing properties, has been widely used in the field of low-voltage electrical contacts, but in the production and use of AgCdO process prone Cd poisoning, causing damage to biological, environmental pollution, for Europe and Japan have introduced regulations prohibited the use of AgCdO contacts in household appliances and automotive appliances. 同时也由于低压电器小型化、高可靠性、长寿命的要求,AgCdO也暴露出抗熔焊性能差、电弧烧损严重等缺点,需要有性能更加优良的银触头材料替代。 Since the low-voltage electrical also requires downsizing, high reliability, long life, robust welding of AgCdO also exposed performance, arc burning serious shortcomings, the need for more excellent performance alternative silver contact material.

目前,银基电触头材料制造工艺有两大类:①合金熔炼内氧化法;②粉末冶金法。 Currently, the silver based electrical contact material manufacturing process, there are two categories: ① the alloy melting oxidation; ② powder metallurgy. 根据制造工艺其产品也可以分为内氧化触头和粉末冶金触头两大系列。 The manufacturing process and its products can be divided into contact and powder oxide contact two series. 日本提出并发布了若干用内氧化方法制备AgSnO2的专利技术,并将此产品投入市场;德国发布了采用粉末冶金方法制备AgSnO2的专利,产品也批量投入市场;国内还有采用包覆法生产AgSnO2的专利技术。 Japan proposed and issued a number of internal oxidation process for the preparation AgSnO2 with patented technology, and this product into the market; Germany issued a patent for preparing the powder metallurgy method AgSnO2, bulk products into the market; as well as the use of domestic production of coated AgSnO2 patented technology. 与AgCdO相比,AgSnO2已经表现出优良的耐电弧烧蚀性能、高热稳定性和优良的抗熔焊能力,成功地应用于继电器、接触器和低压开关,是最有望全面替代AgCdO的无毒材料。 Compared with AgCdO, of AgSnO2 already exhibits excellent arc ablation resistance, high thermal stability and excellent anti-welding capability, successfully applied to the relay, and a low pressure switch contacts are fully replace most promising non-toxic material AgCdO .

目前,一般认为内氧化工艺生产的银氧化锡触头材料密度高,电阻率低,电寿命最长,用这种工艺制备的触点在AC3和AC4条件下,其电寿命比AgCdO好。 At present, the oxidation process is generally believed that production of high silver-tin oxide contact material density, a low resistivity, the longest electrical life, prepared by this procedure using contact AC3 and AC4 conditions under which the electrical life is better than AgCdO. 由于接触器、继电器等操作频繁的电器要求触头耐电磨损及电寿命长,因此一般采用内氧化工艺生产的触头产品,它的缺点是在一些场合表现出较高的温升。 Since the contacts and the relay contacts requires frequent operation of electrical power and electrical wear-resistant, long life, and therefore the oxidation process is generally used in the production of the contact product, it has the disadvantage that in some occasions showed higher temperature rise.

采用粉末冶金工艺生产,加入了氧化钨、氧化钼或者氧化铜的银氧化锡产品,在接点温升方面与内氧化法的接近,在AC4寿命检验方面有更好的结果,但在AC3寿命检验中会有比较差的结果。 Produced by powder metallurgy process, the addition of tungsten oxide, molybdenum oxide, copper oxide or silver tin oxide products, close to the inner aspect of the junction temperature oxidation method, better results in terms of AC4 life test, life test but AC3 there will be relatively poor results.

通常根据电器开关功能、电流等级等要求不同,选用的材料也有所不同。 The electrical switching function normally, different current levels and other requirements, the choice of materials are different. 另外,选用非对称配对也能提高材料的使用寿命。 Further, use of non symmetric pair can improve the service life of the material.

内氧化法是将AgSn合金在富氧环境下加热,通过O2在Ag中的扩散,在合金内部生成氧化锡粒子,这种方法能够获得精细的氧化锡粒子分布,但产品中往往存在氧化锡的成分梯度,表面高,中间少,存在富氧化锡区,晶界区域容易偏析氧化锡,从而降低了触点性能。 The oxidation is AgSn alloy is heated in an oxygen-rich environment, by diffusion of O2 in Ag, tin oxide particles generated inside the alloy, this method can obtain a fine distribution of tin oxide particles, but there is often the product of tin oxide composition gradient, surface, intermediate small, the presence of tin oxide-rich region, the grain boundary easily segregates tin oxide region, thus reducing the performance of the contacts. 并且在AgSn合金中当Sn的含量大于4-5%(以元素金属计)时,不可避免要在这种合金外表面形成连续的Sn氧化膜,从而阻碍氧渗透到合金内部,使得AgSn块体合金内部的Sn很难内氧化,内氧化需要时间长(需要数个月),温度高(500-750度),压力大(一般10-200大气压),耗费能量多。 When AgSn alloy and when the Sn content is more than 4-5% (as elemental metal), it is inevitable to form a continuous surface Sn oxide film outside this alloy, thus preventing oxygen permeation into the interior of the alloy, so that the block AgSn Sn alloy inside the hard oxide, the oxidation requires a long time (several months required), high temperature (500-750 °), pressure (typically 10-200 atm), more energy-consuming. 为了解决这些问题,通常向其中加入0.5-5%的In,以促进内氧化。 To solve these problems, usually 0.5 to 5% of In is added thereto, to promote the oxidation. 但In价格高昂,广泛应用有价格上的障碍,并且即使加入In等促氧化剂,2mm的AgSnO2也需要200小时才能氧化完全。 But In the high price, there are obstacles to widespread use of price, and even pro-oxidants, etc. In adding, 2mm of AgSnO2 also requires 200 hours to complete oxidation. 近年来有采用将AgSn合金雾化制成AgSn合金粉,再进行内氧化的技术。 In recent years the use of AgSn alloy atomized powder made of AgSn alloy, and then oxidizing the art. 但超过4%Sn的AgSn合金粉内氧化仍然慢,同时还是容易形成SnO2包Ag的颗粒情况,粉末冶金加工时,得到SnO2隔离Ag的组织,晶界富SnO2,材料力学性能差,很难冷加工(拔丝、打铆钉等)。 AgSn but the extract was more than 4% Sn alloy oxide is still slow, is also easy to form particles of Ag SnO2 package case, when powder metallurgy processing, Ag isolated tissue obtained SnO2, SnO2-rich grain boundaries, the difference between the mechanical properties, is difficult to cold (Roberts, playing rivets, etc.).

发明内容 SUMMARY

:本发明的目的在于提供一种银氧化锡电触头材料的制备方法,用该方法制备的银氧化锡电触头材料兼备粉末冶金和内氧化的优点,具有优良的电性能和力学性能。 : Object of the present invention is to provide a method for preparing silver-tin oxide contact materials, silver tin oxide material electrically contacts both the advantages of powder metallurgy and internal oxidation produced by this method has excellent electrical and mechanical properties.

本发明提供了一种银氧化锡电触头材料的制备方法,其特征在于:——以2~12%重量的粒度不超过150目的SnO2粉,和余量的粒度在50~500目之间的AgSn合金粉为原料,其中AgSn合金粉中锡含量在1~5%重量之间;——将上述原料粉隔绝空气球磨或强力混合制备SnO2分布均匀的复合粉;——将上述复合粉经过先内氧化再成形制成触头材料,或者经过先成形再内氧化制成触头材料。 The present invention provides a method for preparing a silver-tin oxide contact material, characterized by: - ​​2 to 12% by weight of a particle size not exceeding 150 mesh between the SnO2 powder, and the balance of particle size 50 to 500 mesh the AgSn alloy powder as raw material, wherein the tin content AgSn alloy powder between 1 to 5% by weight; - the raw material powder isolated air ball mill or composite powders prepared by mixing SnO2 strong uniform distribution; - after the above-mentioned composite powder reshaping the first oxide contact material is made, or after forming the first contact is made and then the oxide material.

本发明银氧化锡电触头材料的制备方法中,所述AgSn合金粉还可以含有不超过2%重量的Cu、Re、Zn、In、Bi、Sb或Ce中的一种或者几种。 Preparation of silver-tin oxide contact material of the present invention, the AgSn alloy powder may also contain one or several of not more than 2% by weight of Cu, Re, Zn, In, Bi, Sb or Ce.

本发明银氧化锡电触头材料的制备方法中,所述AgSn合金粉中,锡含量最好在2~4%重量之间。 Preparation of silver-tin oxide contact material of the present invention, the AgSn alloy powder, the tin content is preferably between 2 to 4% by weight.

本发明银氧化锡电触头材料的制备方法中,所述原料粉中还可以含有不超过1%重量的WO3、Bi2O3、MoO3、In2O3、GeO2、CuO、WC、W、C或金刚石粉中的一种或者几种。 Preparation of silver-tin oxide contact material of the present invention, the raw material powder may further contain less than 1% by weight of WO3, Bi2O3, MoO3, In2O3, GeO2, CuO, WC, W, C, or diamond powder of one or several.

本发明银氧化锡电触头材料的制备方法中,所述AgSn合金粉的粒度范围最好在100-325目之间。 Preparation of silver-tin oxide contact material of the present invention, the particle size range of the AgSn alloy powder is preferably between 100-325 mesh.

本发明银氧化锡电触头材料的制备方法中,对于所述先内氧化再成形工艺,参数选择为:内氧化温度400~800℃,时间1~100小时;最好为内氧化温度为550℃,时间为5小时。 Preparation of silver-tin oxide contact material of the present invention, the oxide within said first reshaping process parameters chosen: the oxidation temperature 400 ~ 800 ℃, for 1 to 100 hours; oxidation temperature is preferably within a 550 ℃, time was 5 hours.

本发明银氧化锡电触头材料的制备方法中,对于所述先成形再内氧化工艺,参数选择为内氧化温度500-750℃,时间1-200小时。 Preparation of silver-tin oxide contact material of the present invention, for the first re-shaping the oxidation process, the oxidation temperature parameters selected to 500-750 deg.] C, time is 1 to 200 hours.

本发明银氧化锡电触头材料的制备方法中,对于所述球磨工艺,球料比为5~50∶1,时间为1~20小时。 Preparation of silver-tin oxide contact material of the present invention, with respect to the milling process, the ball to powder ratio of 5 to 50:1, for 1 to 20 hours.

本发明银氧化锡电触头材料的制备方法中,所述AgSn合金粉可以通过气雾化、水雾化、车削后球磨制粉等方式获得,优选为采用空气雾化方法制备。 Preparation of silver-tin oxide contact material of the present invention, the alloy powder can be obtained by AgSn aerosolized, atomized water, after the turning ball milling, etc., is preferably employed for the preparation of an air atomization process.

本发明的关键在于考虑到粉末冶金制备的AgSnO2产品在使用上和性能上与内氧化法的不足,综合内氧化和粉末法的优点,根据AgSn合金氧化特性,即在Sn含量小于4%时,AgSn合金容易氧化和内氧化与AgSn合金颗粒大小或者板材的薄厚有关这个特征,将含Sn小于4%的AgSn合金粉(或者AgSnCu合金粉)与SnO2粉(或者含有CuO、WO3、MoO2的SnO2粉)、在高能球磨机中隔绝氧进行球磨,将SnO2粉呈均匀和超细状态弥散分布在银锡合金粉末基体中,复合粉中锡的总含量在5-20%之间。 The key to the present invention is considered insufficient, the integrated oxidized product AgSnO2 advantages in the use of powder metallurgy and performance of the powder method and the oxidation method, the oxidation characteristics of the alloy according to the AgSn, i.e. Sn content is less than 4%, AgSn alloy is easily oxidized and the oxidation AgSn alloy particle size, or plate Bohou on this feature, a solution of Sn AgSn alloy powder of less than 4% (or AgSnCu alloy powder) and the SnO2 powder (or contains CuO, WO3, MoO2 of SnO2 powder ), isolated in the high-energy ball milling oxygen, the SnO2 powder was uniformly dispersed state and ultrafine silver-tin alloy powder in the matrix, the total content of tin in the composite powder between 5-20%. 球磨后的AgSn与SnO2复合粉,可以直接进行内氧化,也可以制成成品触点后内氧化。 After milling AgSn compound and SnO2 powder, the oxidation can be carried out directly, can also be made within the finished contact oxidation. 由于SnO2的弥散使得内氧化法时少量Sn形成的氧化物无法形成连续阻挡层,氧化可以容易地持续地进行,氧化不会形成内外部的梯度。 Since the SnO2 dispersion such that the oxidation of a small amount of Sn oxide is formed not form a continuous barrier layer, oxidation may be carried out continuously readily oxide do not form within the external gradients. 因此本发明产品即有非常弥散和与银结合精密的SnO2,也有后加入的含有可以增加氧化锡与银润湿的W、Mo和Cu的氧化物,即有内氧化方法的优点,也有粉末法的优点,晶界上析出的不是氧化锡而是纯银,力学性能大大改善。 Thus the product of the present invention that is very diffuse and silver binding precision SnO2, but also after the addition contains may be increased tin oxide and silver wetted W, Mo and Cu oxides, i.e., has the advantage of internal oxidation process, there powder method advantages, grain boundaries are not precipitated but silver tin oxide, is greatly improved mechanical properties.

具体实施方式 detailed description

:实施例1采用空气雾化方法制备含4%Sn的AgSn合金粉,经过筛分银锡合金粉的粒度<100目;将化学法制备的SnO2(含5%CuO)与AgSn粉混合,计算SnO2在混料中最终的含量为10%,在混料罐中混合30分后放入高能球磨机中抽真空通氩气球磨,球料比为30∶1,球磨机速度为500r/min,球磨机外套水冷,时间2小时,球磨后粉末在550℃空气炉中氧化和退火5小时,经冷压、烧结、热压、复烧和复压,挤压成直径6mm的丝,经冷拔到最终尺寸。 Example 1: Preparation of AgSn alloy powder containing 4% Sn using an air atomizing method, subjected to particle size sieving silver-tin alloy powder <100 mesh; the chemical method of SnO2 (containing 5% CuO) powder mixed with AgSn, calculated in the final mixing SnO2 content of 10%, 30 minutes after mixing in the mixing bowl into the high-energy ball mill evacuated argon balloon, material ratio 30:1 ball, ball speed of 500r / min, a ball mill jacket water cooling, for 2 hours, the milled powder at 550 ℃ for air oven annealing oxide and 5 hours after cold pressing, sintering, hot pressing, firing, and complex multi-pressure, extruded 6mm wire diameter, to a final size by drawing .

实施例2采用空气雾化方法制备含2%Sn的AgSn合金粉,经过筛分银锡合金粉的粒度<150目;将化学法制备的SnO2(含2%WO3)与AgSn粉混合,计算SnO2在混料中最终的含量为10%,在混料罐中混合30分后放入高能球磨机中,抽真空通氩气球磨,球料比为20∶1,球磨机速度为400r/min,时间4小时,球磨后粉末在氩气保护气氛下退火,冷压,在氩气保护气氛下烧结、热压、复烧和复压,挤压成直径20×75mm的板,与5mm纯银板热压复合,一次变形量大于60%,经冷轧到最终3mm,然后在空气炉中500度内氧化5小时。 Embodiment 2 A method of atomizing air AgSn alloy powder was prepared containing 2% Sn embodiment, subjected to particle size sieving silver-tin alloy powder <150 mesh; chemical method to SnO2 (containing 2% WO3) powder mixed with AgSn, SnO2 calculated in the final blend in an amount of 10%, 30 minutes after mixing into a high energy ball mill, mill evacuated argon balloon in the mixing tank, feed ratio 20:1 ball, ball speed of 400r / min, time 4 hours, milled powder under an argon atmosphere annealing, cold pressing, sintering under an argon protective gas atmosphere, hot, burning, and complex multi-pressure, extruded into 75mm diameter plate 20 ×, hot plate with silver 5mm compound, a deformation greater than 60%, cold rolled to a final 3mm, followed by oxidation of 500 for 5 hours in an air oven.

实施例3 Example 3

采用空气雾化方法制备含4%Sn和1%Cu的AgSnCu合金粉,经过筛分银锡合金粉的粒度<150目;将化学法制备的SnO2与AgSnCu粉混合,计算SnO2在混料中最终的含量为12%,另外添加1%的In2O3,在混料罐中混合30分后放入高能球磨机中,抽真空通氩气球磨,球料比为20∶1,球磨机速度为400r/min,时间4小时,球磨后粉末在550℃空气炉中氧化和退火2小时,经冷压、烧结、热压、复烧和复压,挤压成直径5mm的丝,经冷拔到最终尺寸。 Using an air atomizing method was prepared containing 4% Sn and 1% AgSnCu Cu alloy powder, the silver-tin alloy powder sieved to a particle size <150 mesh; SnO2 mixing the chemical method and AgSnCu powder, calculated on the final blend to SnO2 content of 12%, further 1% of In2O3, after mixing for 30 minutes in a high-energy ball into the mixing tank, vacuum argon balloon mill, ball to powder ratio 20:1, mill speed of 400r / min, 4 hours, the milled powder at 550 ℃ for annealing and oxidation air oven for 2 hours by cold pressing, sintering, hot pressing, firing, and complex multi-pressure, extruded wire diameter of 5mm, the drawing to the final dimensions.

实施例4采用空气雾化方法制备含4%Sn和1%Cu的AgSnCu合金粉,合金粉的粒度<150目;将化学法制备的SnO2与AgSnCu粉混合,另外添加0.3%的Bi2O3,计算SnO2、CuO和Bi2O3在混料中最终的含量为15%,在混料罐中混合30分后放入高能球磨机中,抽真空通氩气球磨,球料比为20∶1,球磨机速度为400r/min,时间4小时,球磨后粉末置于真空热压机,抽真空10-1par并保持到700℃,持续1小时,升温到780度热压至致密,取出挤压成直径5mm的丝,经冷拔到最终尺寸,在铆钉机上将AgSnO2与Cu大制成复合铆钉,AgSnO2的厚度为200μm,将复合铆钉在500℃氧化3小时,取出后在氨分解气氛(75%H2和25%N2)450℃将氧化的铜还原。 Example 4 air atomizing method was prepared containing 4% Sn and 1% AgSnCu Cu alloy powder, the alloy powder particle size <150 mesh; SnO2 mixed with the chemical method AgSnCu powder, further added 0.3% of Bi2O3, SnO2 calculated , CuO and Bi2O3 in mixing the final content of 15%, placed in a mixing bowl and mixed for 30 minutes in a high energy ball mill, the mill was evacuated argon balloon, feed ratio 20:1 ball, ball speed of 400r / min, 4 hours, milled powder is placed in a vacuum hot press, evacuated to 700 deg.] C and held 10-1par, for 1 hour, heated to 780 degrees to the dense hot, remove the wire diameter 5mm extruded, dried cold drawing to a final size, on the machine AgSnO2 rivet and a composite rivet large Cu, AgSnO2 a thickness of 200 m, the composite oxide rivet 500 ℃ 3 hours, remove the decomposition atmosphere (75% H2 and 25% N2) in ammonia 450 ℃ copper oxide reduction.

Claims (10)

  1. 1.一种银氧化锡电触头材料的制备方法,其特征在于:——以2~12%重量的粒度不超过150目的SnO2粉,和余量的粒度在50~1000目之间的AgSn合金粉为原料,其中AgSn合金粉中锡含量在1~5%重量之间;——将上述原料粉隔绝空气球磨或强力混合制备SnO2分布均匀的复合粉;——将上述复合粉经过先内氧化再成形制成触头材料,或者经过先成形再内氧化制成触头材料。 1. A method for preparing silver-tin oxide contact material, comprising: - a particle size of 2 to 12% by weight of SnO2 powder is not more than 150 mesh, and the balance of particle size between 50 and 1000 AgSn purposes alloy powder as raw material, wherein the tin content AgSn alloy powder between 1 to 5% by weight; - the raw material powder isolated air ball mill or composite powders prepared by mixing SnO2 strength distribution; and - within the first through the composite powder reshaping oxide contact material is made, or after forming the first contact is made and then the oxide material.
  2. 2.按照权利要求1所述银氧化锡电触头材料的制备方法,其特征在于:所述AgSn合金粉中,含有不超过2%重量的Cu、Re、Zn、In、Bi、Sb或Ce中的一种或者几种。 2. A method for preparing a silver tin oxide material of the electrical contact according to claim 1, wherein: said AgSn alloy powder, containing no more than 2% by weight of Cu, Re, Zn, In, Bi, Sb or Ce in one or several.
  3. 3.按照权利要求1或2所述银氧化锡电触头材料的制备方法,其特征在于:所述AgSn合金粉中,锡含量在2~5%重量之间。 1 2 or 3. The silver-tin oxide contact material of electrical production method according to claim, wherein: said AgSn alloy powder, the tin content is between 2 to 5% by weight.
  4. 4.按照权利要求1或2所述银氧化锡电触头材料的制备方法,其特征在于:所述原料粉中还含有不超过1%重量的WO3、Bi2O3、MoO3、In2O3、GeO2、CuO、WC、W、C或金刚石粉中的一种或者几种。 4. The method of preparing the tin silver oxide 1 or 2, the contact material according to claim, wherein: said raw material powder further contains not more than 1% by weight of WO3, Bi2O3, MoO3, In2O3, GeO2, CuO, one or several WC, W, C, or in the diamond powder.
  5. 5.按照权利要求1或2所述银氧化锡电触头材料的制备方法,其特征在于:所述AgSn合金粉的粒度范围在80~325目之间。 5. The preparation as claimed in claim 1 or 2 silver tin oxide material, electrical contacts, wherein: said AgSn alloy powder particle size range is between 80 to 325 mesh.
  6. 6.按照权利要求1或2所述银氧化锡电触头材料的制备方法,其特征在于:对于所述先内氧化再成形工艺,内氧化温度400~800℃,时间1~100小时。 6. The method of claim 1 or 2 Preparation of silver-tin oxide contact material according to claim, wherein: said first oxidation and then to the forming process, the oxidation temperature 400 ~ 800 ℃, for 1 to 100 hours.
  7. 7.按照权利要求6所述银氧化锡电触头材料的制备方法,其特征在于:所述内氧化温度为550℃,时间为5小时。 7. The method of claim 6 prepared silver tin oxide contact material according to claim, wherein: said internal oxidation temperature is 550 deg.] C, for 5 hours.
  8. 8.按照权利要求1或2所述银氧化锡电触头材料的制备方法,其特征在于:对于所述先成形再内氧化工艺,内氧化温度500~850℃,时间1~200小时。 8. The preparation as claimed in claim 1 or 2 silver-tin oxide contact material, wherein: the first for re-shaping the oxidation process, the oxidation temperature of 500 ~ 850 ℃, for 1 to 200 hours.
  9. 9.按照权利要求1或2所述银氧化锡电触头材料的制备方法,其特征在于:对于所述球磨工艺,球料比为5~50∶1,时间为1~20小时。 9. The method of claim 1 or 2 preparing silver-tin oxide contact material according to claim, wherein: with respect to the milling process, the ball to powder ratio of 5 to 50:1, for 1 to 20 hours.
  10. 10.按照权利要求1或2所述银氧化锡电触头材料的制备方法,其特征在于:所述AgSn合金粉采用气雾化方法制备。 10. The preparation of claim 1 or 2 silver tin oxide electrical contact material, characterized in that: the method of preparing aerosolized AgSn alloy powder employed.
CN 200610045639 2006-01-12 2006-01-12 Preparation process of silver tin oxide electric contact material CN100432250C (en)

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CN101649399B (en) 2009-07-20 2010-12-29 温州宏丰电工合金股份有限公司 Preparation method of tin-oxygen-silver electric contact material
CN102041474A (en) * 2010-12-20 2011-05-04 昆明理工大学 Preparation method for nano precious metal particle modified tin dioxide gas sensitive material
CN102509654A (en) * 2011-10-27 2012-06-20 福达合金材料股份有限公司 Preparation method for silver stannic oxide wire
WO2012088736A1 (en) * 2010-12-30 2012-07-05 温州宏丰电工合金股份有限公司 Method for manufacturing ag based oxide electrical contact materials with fibrous structure
CN102568643A (en) * 2012-03-01 2012-07-11 郴州市金贵银业股份有限公司 AgSnO contact material and preparation method thereof
CN103695696A (en) * 2013-12-30 2014-04-02 桂林电器科学研究院有限公司 Method for preparing silver tin oxide electrical contactor material containing additives
CN104493175A (en) * 2014-12-30 2015-04-08 桂林电器科学研究院有限公司 Preparation method of silver tin oxide electric contact material containing additive
CN104588672A (en) * 2015-01-12 2015-05-06 重庆川仪自动化股份有限公司 Preparation method of in-situ doped copper-bearing tin oxide powder and silver tin oxide material
CN105458273A (en) * 2015-11-26 2016-04-06 浙江工业大学 Method for promoting oxidation of Ag-Sn alloy powder through high energy ball milling method

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CN1635582A (en) 2003-12-30 2005-07-06 中南大学 Electric contact material for electric locomotive and method for preparing same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101649399B (en) 2009-07-20 2010-12-29 温州宏丰电工合金股份有限公司 Preparation method of tin-oxygen-silver electric contact material
CN102041474A (en) * 2010-12-20 2011-05-04 昆明理工大学 Preparation method for nano precious metal particle modified tin dioxide gas sensitive material
CN102041474B (en) 2010-12-20 2013-03-06 昆明理工大学 Preparation method for nano precious metal particle modified tin dioxide gas sensitive material
WO2012088736A1 (en) * 2010-12-30 2012-07-05 温州宏丰电工合金股份有限公司 Method for manufacturing ag based oxide electrical contact materials with fibrous structure
CN102509654A (en) * 2011-10-27 2012-06-20 福达合金材料股份有限公司 Preparation method for silver stannic oxide wire
CN102509654B (en) * 2011-10-27 2015-03-11 福达合金材料股份有限公司 Preparation method for silver stannic oxide wire
CN102568643A (en) * 2012-03-01 2012-07-11 郴州市金贵银业股份有限公司 AgSnO contact material and preparation method thereof
CN102568643B (en) 2012-03-01 2013-09-18 郴州市金贵银业股份有限公司 AgSnO contact material and preparation method thereof
CN103695696A (en) * 2013-12-30 2014-04-02 桂林电器科学研究院有限公司 Method for preparing silver tin oxide electrical contactor material containing additives
CN104493175A (en) * 2014-12-30 2015-04-08 桂林电器科学研究院有限公司 Preparation method of silver tin oxide electric contact material containing additive
CN104493175B (en) * 2014-12-30 2016-04-13 桂林电器科学研究院有限公司 Preparation of silver-tin oxide contact material containing additive
CN104588672A (en) * 2015-01-12 2015-05-06 重庆川仪自动化股份有限公司 Preparation method of in-situ doped copper-bearing tin oxide powder and silver tin oxide material
CN105458273A (en) * 2015-11-26 2016-04-06 浙江工业大学 Method for promoting oxidation of Ag-Sn alloy powder through high energy ball milling method

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