CN111048339B - 一种表面具有连续抗氧化层的银钼电触头的制作方法及其产品 - Google Patents

一种表面具有连续抗氧化层的银钼电触头的制作方法及其产品 Download PDF

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CN111048339B
CN111048339B CN201911245922.8A CN201911245922A CN111048339B CN 111048339 B CN111048339 B CN 111048339B CN 201911245922 A CN201911245922 A CN 201911245922A CN 111048339 B CN111048339 B CN 111048339B
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molybdenum
silver
electrical contact
resistant layer
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CN111048339A (zh
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费家祥
宋振阳
林旭彤
孔欣
郭仁杰
王达武
陈松杨
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Zhejiang Fuda Alloy Materials Technology Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/048—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by powder-metallurgical processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/1035—Liquid phase sintering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/60—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes
    • C23C8/62—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes only one element being applied
    • C23C8/64—Carburising
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/241—Chemical after-treatment on the surface
    • B22F2003/242—Coating

Abstract

本发明公开了一种表面具有连续抗氧化层的银钼电触头的制作方法，其技术方案包括以下步骤：(1)表面物理处理(2)加工连续抗氧化层，将经步骤(1)处理的银钼电触头在一氧化碳气氛下，置于连续烧结炉中，800‑950℃烧结0.2‑8小时，然后冷却，使银钼电触头表面的钼颗粒碳化得到碳化钼，形成连续抗氧化层；或者本步骤(2)将经步骤(1)处理的银钼电触头与碳粉混在一起，在氢气气氛下，置于连续烧结炉中，800‑950℃烧结0.2‑8小时，然后冷却，使银钼电触头表面的钼颗粒碳化得到碳化钼，形成连续抗氧化层。本发明制得的银钼电触头，连续的表面抗氧化层将钼保护在里面，避免钼颗粒在焊接时被氧化或暴露在湿热的空气中被氧化。

Description

一种表面具有连续抗氧化层的银钼电触头的制作方法及其 产品
技术领域
本发明涉及电触头材料科学领域，具体是指一种表面具有连续抗氧化层的银钼电触头的制作方法及其产品。
背景技术
采用粉末冶金熔渗工艺生产的银钼电触头，因银的良好导电性和钼的高熔点高硬度，整体表现出电阻率低、耐烧损能力强等特点，被广泛应用于各低压断路器中。
该种触头材料采用的是熔渗工艺，其制备方法是：先是制作骨架和银片，再将骨架和银片一对一排在耐高温板上进炉熔渗。熔渗温度一般在1000～1300℃，银片熔化渗入骨架将孔隙填满，得到致密的银钼电触头。
发明人在试验中发现：熔渗后的银钼电触头表面(底面除外)难以形成连续银层，甚至完全没有银层，钼颗粒裸露在表面，容易在焊接时被氧化或在湿热环境下被氧化，造成接触电阻高，甚至不导通现象。因此，有必要改进。
发明内容
为解决现有技术存在的问题和不足，本发明的目的是提供一种表面具有连续抗氧化层的银钼电触头的制作方法。
为实现上述目的，本发明的技术方案是包括以下步骤：
（1）表面物理处理，将银钼电触头用研磨机和抛光机进行研磨抛光，然后清洗干净；
（2）加工连续抗氧化层，将经步骤（1）处理的银钼电触头在一氧化碳气氛下，置于连续烧结炉中，800-950℃烧结0.2-8小时，然后冷却，使银钼电触头表面的钼颗粒碳化得到碳化钼，形成连续抗氧化层；或者本步骤（2）将经步骤（1）处理的银钼电触头与碳粉混在一起，在氢气气氛下，置于连续烧结炉中，800-950℃烧结0.2-8小时，然后冷却，使银钼电触头表面的钼颗粒碳化得到碳化钼，形成连续抗氧化层。
进一步设置是所述的步骤（1）的银钼电触头通过以下步骤制备：
a.将银粉和钼粉混合均匀，然后压制成银钼骨架；
b.将所述银钼骨架下面附银片，在氢气气氛下，置于熔渗炉中熔渗， 1000-1300℃烧结0.5-5小时，使银片熔化渗入银钼骨架，得到银钼电触头。
进一步设置是所述的表面连续抗氧化层厚度为2～20μm。
本发明还提供一种通过以上方法所制备的表面具有连续抗氧化层的银钼电触头。
本发明的有益效果是：本发明提供了一种表面具有连续抗氧化层的银钼电触头的制作方法。采用碳化工艺，选用一氧化碳气氛或氢气气氛（氢气气氛下，银钼电触头需与碳粉混在一起），控制烧结温度和时间，使表层钼颗粒碳化，得到连续的一层抗氧化层。此工艺的优势是，该材料主体成分是AgMo，具有良好的导电性能，更低的温升，而表面是AgMoC，能够很好的抗氧化，且导电性能优异。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合实施例对本发明作进一步地详细描述。
实施例一：
制备AgMo50电触头产品：将Ag粉及Mo粉按照30:70的质量比混合成骨架粉。将骨架粉压制成骨架。将骨架下排上相应的Ag片，将其置于熔渗炉，氢气气氛保护下，1100℃烧结2小时。将熔渗后的产品清洗，得到AgMo50电触头产品。
制备表面具有连续抗氧化层的AgMo50电触头产品：将AgMo50电触头在一氧化碳气氛下，置于连续烧结炉中，950℃烧结0.5小时，然后冷却，使表面钼颗粒碳化得到表面具有连续抗氧化层的AgMo50电触头。
实施例二：
制备AgMo40电触头产品：将Ag粉及Mo粉按照40:60的质量比混合成骨架粉。将骨架粉压制成骨架。在骨架下排上相应的Ag片，将其置于熔渗炉，氢气气氛保护下，1200℃烧结1.5小时。将熔渗后的产品清洗，得到AgMo40电触头产品。
制备表面具有连续抗氧化层的AgMo40电触头产品：将AgMo40电触头与碳粉混在一起，在氢气气氛下，置于连续烧结炉中，900℃烧结1小时，然后冷却，使表面钼颗粒碳化得到表面具有连续抗氧化层的AgMo40电触头。
实施例三
制备AgMo30电触头产品：将Ag粉及Mo粉按照50:50的质量比混合成骨架粉。将骨架粉压制成骨架。在骨架下排上相应的Ag片，将其置于熔渗炉，氢气气氛保护下，1000℃烧结2.5小时。将熔渗后的产品清洗，得到AgMo30电触头产品。
制备表面具有连续抗氧化层的AgMo30电触头产品：将AgMo30电触头与碳粉混在一起，在氢气气氛下，置于连续烧结炉中，850℃烧结1.5小时，然后冷却，使表面钼颗粒碳化得到表面具有连续抗氧化层的AgMo30电触头。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (4)

1.一种表面具有连续抗氧化层的银钼电触头的制作方法，其特征在于包括以下步骤：
步骤（1）表面物理处理，将银钼电触头用研磨机和抛光机进行研磨抛光，然后清洗干净，所述的银钼电触头是通过熔渗工艺制备；
步骤（2）加工连续抗氧化层，将经步骤（1）处理的银钼电触头在一氧化碳气氛下，置于连续烧结炉中，800-950℃烧结0.2-8小时，然后冷却，使银钼电触头表面的钼颗粒碳化得到碳化钼，形成连续抗氧化层；或者将经步骤（1）处理的银钼电触头与碳粉混在一起，在氢气气氛下，置于连续烧结炉中，800-950℃烧结0.2-8小时，然后冷却，使银钼电触头表面的钼颗粒碳化得到碳化钼，形成连续抗氧化层。
2.根据权利要求1所述的制作方法，其特征在于：所述的步骤（1）的银钼电触头通过以下步骤制备：
a.将银粉和钼粉混合均匀，然后压制成银钼骨架；
b.将所述银钼骨架下面附银片，在氢气气氛下，置于熔渗炉中熔渗， 1000-1300℃烧结0.5-5小时，使银片熔化渗入银钼骨架，得到银钼电触头。
3.根据权利要求1所述的制作方法，其特征在于：所述表面的连续抗氧化层厚度为2～20μm。
4.一种如权利要求1-3之一所述制作方法所制备的表面具有连续抗氧化层的银钼电触头。
CN201911245922.8A 2019-12-07 2019-12-07 一种表面具有连续抗氧化层的银钼电触头的制作方法及其产品 Active CN111048339B (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101834070A (zh) * 2009-03-13 2010-09-15 上海电科电工材料有限公司 银碳化钨电触头材料及其制造方法
CN110000374A (zh) * 2019-04-15 2019-07-12 福达合金材料股份有限公司 一种银钼触头材料的制备工艺及其产品
CN110225803A (zh) * 2017-02-02 2019-09-10 株式会社明电舍 用于制造电极材料的方法和电极材料

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101834070A (zh) * 2009-03-13 2010-09-15 上海电科电工材料有限公司 银碳化钨电触头材料及其制造方法
CN110225803A (zh) * 2017-02-02 2019-09-10 株式会社明电舍 用于制造电极材料的方法和电极材料
CN110000374A (zh) * 2019-04-15 2019-07-12 福达合金材料股份有限公司 一种银钼触头材料的制备工艺及其产品

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Address before: No. 518, Binhai 4th Road, Binhai Park, Wenzhou Economic and Technological Development Zone, Zhejiang Province, 325000

Applicant before: FUDA ALLOY MATERIALS Co.,Ltd.

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