Tungsten-copper alloy and preparation method thereof
A tungsten-copper alloy and tungsten-copper technology, applied in the field of tungsten-copper alloy and its preparation, can solve the problems of inability to meet the new tungsten-copper alloy, reduced efficiency, increased cost, etc., and achieves improved mechanical properties, extended service life, and excellent electrical conductivity. and thermal conductivity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0022] A preparation method of tungsten copper alloy, comprising the following steps:
[0023] (1) Preparation of tungsten-copper composite oxide powder, taking by weighing 28.2% ammonium tungstate solution 320g, placing it in an electronic stirrer, dissolving copper nitrate (Cu(NO3) 2) with deionized water to form a solution, Under stirring conditions (speed: 1000rpm, stirring time: 60min), the mixture of Cu(NO3)2 solution and concentrated nitric acid (concentration 68%) (55g Cu(NO3)2 5H2O, 75g concentrated nitric acid) was added to ammonium tungstate The solution undergoes a chemical precipitation reaction, continuously stirred for 30-90 minutes, and then the precipitate is taken out, calcined at 150°C for 3 hours, ground and pulverized to obtain a tungsten-copper oxide composite powder.
[0024] (2) Reduction of tungsten-copper oxide composite powder, put the tungsten-copper oxide composite powder in a ventilated strong drainage tube furnace for hydrogen reduction to obtain...
Embodiment 2
[0028] (1) Take 320 g of ammonium tungstate solution with a concentration of 28.2%, place it in an electronic stirrer, mix Cu(NO3)2 solution and concentrated nitric acid (68% concentration) (55g Cu(NO3)2·5H2O, Add 75g of concentrated nitric acid into the ammonium tungstate solution under stirring conditions (rotating speed 1500rpm, stirring time 90min) for chemical precipitation reaction, then put the precipitate in a drying oven at 200°C for 2.3h, and then grind and crush it.
[0029] (2) The tungsten-copper oxide composite powder obtained in the above steps is reduced in the air-permeable strong drainage pipe furnace H2 atmosphere, the reduction temperature is 700°C, the reduction time is 1.3h, and the hydrogen flow rate is 40ml / min to obtain the nano-tungsten-copper mixed powder (average Grain ≤ 50nm).
[0030] (3) Put the mixed powder obtained in the above steps into a steel mold, and press it under a pressure of 180 MPa to make a green compact.
[0031] (4) Place the com...
Embodiment 3
[0033] (1) Weigh 320g of ammonium tungstate solution with a concentration of 28.2%, place it in an electronic stirrer, and mix Cu(NO3)2 solution and concentrated nitric acid (concentration 68%) mixture (55g Cu(NO3)2·5H2O, 75g concentrated nitric acid) was added to the above ammonium tungstate solution for chemical precipitation reaction, and then the precipitate was dried in a 300°C drying oven for 1.8h, and then ground and broken.
[0034] (2) The tungsten-copper oxide composite powder obtained in the above steps is reduced in the gas-permeable strong drainage pipe furnace H2 atmosphere, the reduction temperature is 750°C, the reduction time is 1h, and the hydrogen flow rate is 35ml / min to obtain nano-tungsten-copper mixed powder (average crystal Particles ≤ 50nm).
[0035] (3) Put the mixed powder into a steel mold and press under a pressure of 230MPa to make a green compact.
[0036] (4) Place the compact in a hydrogen furnace for sintering, the heating rate is 10°C / min, t...
PUM
| Property | Measurement | Unit |
|---|---|---|
| size | aaaaa | aaaaa |
| electrical resistivity | aaaaa | aaaaa |
| hardness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More