阅读说明：本技术 用于金属化陶瓷和金属零件钎焊的银铜焊料层制备方法 (The silver-copper brazing alloy layer preparation method being brazed for metallized ceramic and metal parts ) 是由 高沛君 翟文斌 姚明亮 于 2019-07-31 设计创作，主要内容包括：本发明公开了一种用于金属化陶瓷和金属零件钎焊的银铜焊料层制备方法,包括步骤为：将银铜混合粉与有机粘结剂混合得到银铜焊膏,再将所述银铜焊膏涂覆在金属化陶瓷的镍层表面,最后进行烧结,得到固化有银铜焊料层的金属化陶瓷。通过上述方式,本发明通过在金属化陶瓷的镍层表面烧结银铜焊料,只需要直接将金属零件放置在金属化陶瓷表面即可,不再需要放置银铜焊片,从而节约了人工成本,也消除了漏放或少放而造成的问题,操作简单,投入成本低,容易实现自动化生产。(The invention discloses a kind of silver-copper brazing alloy layer preparation methods being brazed for metallized ceramic and metal parts, including step are as follows: silver-bearing copper mixed powder and organic binder are mixed to get silver-bearing copper soldering paste, again by the silver-bearing copper paste application on the nickel layer surface of metallized ceramic, it is finally sintered, obtains solidifying the metallized ceramic for having silver-copper brazing alloy layer.Through the above way, the present invention is by being sintered silver-copper brazing alloy on the nickel layer surface of metallized ceramic, it only needs that metal parts is directly placed on metallized ceramic surface, it no longer needs to place silver-bearing copper weld tabs, to save cost of labor, the problem of leakage puts or puts and cause less is also eliminated, it is easy to operate, input cost is low, automated production easy to accomplish.)

1. a kind of silver-copper brazing alloy layer preparation method being brazed for metallized ceramic and metal parts, which is characterized in that including step Suddenly are as follows: silver-bearing copper mixed powder and organic binder are mixed to get silver-bearing copper soldering paste, then the silver-bearing copper paste application is made pottery in metallization The nickel layer surface of porcelain, is finally sintered, and obtains solidifying the metallized ceramic for having silver-copper brazing alloy layer.

2. the silver-copper brazing alloy layer preparation method according to claim 1 being brazed for metallized ceramic and metal parts, It is characterized in that, the silver-bearing copper mixed powder is to be mixed to get silver powder and copper powder, the mass ratio of the silver powder and the copper powder are as follows: 1- 3:1。

3. the silver-copper brazing alloy layer preparation method according to claim 2 being brazed for metallized ceramic and metal parts, It is characterized in that, the silver powder and the copper powder are submicron orders, and the silver powder and copper powder mixing are obtained by ball mill.

4. the silver-copper brazing alloy layer preparation method according to claim 1 being brazed for metallized ceramic and metal parts, It is characterized in that, the organic binder is the mixture of ethyl cellulose and terpinol, the ethyl cellulose and the pine tar The mass ratio of alcohol is 1:20-30.

5. the silver-copper brazing alloy layer preparation method according to claim 4 being brazed for metallized ceramic and metal parts, It is characterized in that, the preparation process of the organic binder are as follows: the ethyl cellulose and the terpinol are heated to 80-120 Degree is made.

6. the silver-copper brazing alloy layer preparation method according to claim 1 being brazed for metallized ceramic and metal parts, It is characterized in that, the mass ratio of the silver-bearing copper mixed powder and the organic binder is 1:3-5.

7. the silver-copper brazing alloy layer preparation method according to claim 1 being brazed for metallized ceramic and metal parts, Be characterized in that, the silver-bearing copper soldering paste be the silver-bearing copper mixed powder and the organic binder rolled in roller bottle machine be made；It is described The viscosity of silver-bearing copper soldering paste is 5000-50000cp.

8. the silver-copper brazing alloy layer preparation method according to claim 1 being brazed for metallized ceramic and metal parts, It is characterized in that, the coating of the silver-bearing copper soldering paste is applied and realized by silk-screen printing or manual pen；The coating of the silver-bearing copper soldering paste With a thickness of 10-100um.

9. the silver-copper brazing alloy layer preparation method according to claim 1 being brazed for metallized ceramic and metal parts, It is characterized in that, the sintering is carried out in hydrogen atmosphere protection stove.

10. the silver-copper brazing alloy layer preparation method according to claim 1 being brazed for metallized ceramic and metal parts, It is characterized in that, the temperature of the sintering is 700-850 degrees Celsius, and the sintering time is 10-30 minutes.

Technical field

The present invention relates to soldering tech fields, more particularly to a kind of silver being brazed for metallized ceramic and metal parts Brazing bed of material preparation method.

Background technique

Soldering refers to that solder and weldment lower than weldment fusing point while heated to after brazing filler metal melts temperature, utilize liquid solder The welding method that the gap of filling solid workpieces connects metal.It is existing be using silver-bearing copper weld tabs made of vacuum smelting method or Welding wire, which is put between metallized ceramic and metal parts, to be brazed, detailed process are as follows: selected first according to soldered component Suitable silver-bearing copper weld tabs is selected, then by after the cleaning of silver-bearing copper weld tabs, metallized ceramic surface is placed by manual mode, then again will The metal parts for needing to be brazed is placed on weld tabs.Together by the metallized ceramic placed, silver-bearing copper weld tabs and metal parts finally It takes in vacuum drying oven or hydrogen furnace and is brazed at a proper temperature.Its principle being brazed is: silver-bearing copper weld tabs is in vacuum drying oven Or it is melted after being heated in the range of 779-850 degree in hydrogen shield atmosphere furnace, one side and metallized ceramic after the melting of silver-bearing copper weld tabs Nickel layer dissolve each other reaction, frit reaction occurs for another side and metal parts, and silver-copper brazing alloy layer occurs solidifying after stove cooling Gu to realize metallized ceramic in conjunction with the connection of metal parts.

Such method for welding needs to place silver-bearing copper weld tabs or welding wire, needs manually to be placed, increases cost of labor.By It is very thin in silver-bearing copper weld tabs very thin (thickness is in 0.06-0.1mm) and welding wire, it is bad to take when being put into metallized ceramic surface, manually There are problems that leakage is put or put less when placement, is easy welding caused by occurring no weld tabs or welding wire after brazing and leaks, weld Connect bad problem.With industrialized propulsion, the automated production of current technology needs silver-bearing copper weld tabs and is placed into ceramic part The movement on surface, the mechanism design comparison complexity of solder is placed in automation and the production cost manufactured is also higher, multiple simultaneously The problem that miscellaneous mechanism can also bring automation equipment reliability low.

Summary of the invention

The invention mainly solves the technical problem of providing a kind of silver-bearing coppers being brazed for metallized ceramic and metal parts Solder layer preparation method is adapted for use with metallized ceramic and can cut down metal parts or oxygen-free copper etc. that silver-copper brazing alloy is brazed The part of metal.

In order to solve the above technical problems, one technical scheme adopted by the invention is that: it provides a kind of for metallized ceramic With the silver-copper brazing alloy layer preparation method of metal parts soldering, including step are as follows: mix silver-bearing copper mixed powder with organic binder It is finally sintered to silver-bearing copper soldering paste, then by the silver-bearing copper paste application on the nickel layer surface of metallized ceramic, obtaining solidification has The metallized ceramic of silver-copper brazing alloy layer.

In a preferred embodiment of the present invention, the silver-bearing copper mixed powder is to be mixed to get silver powder and copper powder, the silver The mass ratio of powder and the copper powder are as follows: 1-3:1.

In a preferred embodiment of the present invention, the silver powder and the copper powder are submicron orders, the silver powder and institute Copper powder mixing is stated to obtain by ball mill.

In a preferred embodiment of the present invention, the organic binder is the mixture of ethyl cellulose and terpinol, The mass ratio of the ethyl cellulose and the terpinol is 1:20-30.

In a preferred embodiment of the present invention, the preparation process of the organic binder are as follows: by the ethyl cellulose 80-120 degree is heated to the terpinol to be made.

In a preferred embodiment of the present invention, the mass ratio of the silver-bearing copper mixed powder and the organic binder is 1:3- 5。

In a preferred embodiment of the present invention, the silver-bearing copper soldering paste is the silver-bearing copper mixed powder and the organic binder It rolls and is made in roller bottle machine；The viscosity of the silver-bearing copper soldering paste is 5000-50000cp.

In a preferred embodiment of the present invention, the coating of the silver-bearing copper soldering paste is applied in fact by silk-screen printing or manual pen Existing；The coating thickness of the silver-bearing copper soldering paste is 10-100um.

In a preferred embodiment of the present invention, the sintering is carried out in hydrogen atmosphere protection stove.

In a preferred embodiment of the present invention, the temperature of the sintering is 700-850 degrees Celsius, and the sintering time is 10-30 minutes.

The beneficial effects of the present invention are: the silver-copper brazing alloy layer system being brazed for metallized ceramic and metal parts of the invention Preparation Method, by being sintered silver-copper brazing alloy on the nickel layer surface of metallized ceramic, it is only necessary to metal parts are directly placed on metal Change ceramic surface, it is no longer necessary to place silver-bearing copper weld tabs, to save cost of labor, also eliminate leakage and put or put and make less At the problem of, easy to operate, input cost is low, automated production easy to accomplish.

Specific embodiment

The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects It encloses.