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Copper-manganese based prealloy powder for metal-diamond soldering, and its prodn. method

A technology of pre-alloyed powder and pre-alloyed powder, applied in the field of pre-alloyed powder and its preparation, can solve the problems of increasing the degree of thermal damage of diamond, damaged mechanical properties and toughness, high price, etc. Good antioxidant properties

Inactive Publication Date: 2008-11-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, relevant exploratory work has also been carried out in China. CuSnTi alloy powder has been trial-produced by mechanical pulverization. By increasing the Sn content, the melting point of the alloy has been reduced by about 900 ° C, but its mechanical properties, especially toughness, have been severely damaged; some people have used AgCuTi alloy , not to mention that the high Ag content makes it impossible to use it in large quantities in the manufacture of diamond products due to the high price, and it is not easy to synthesize the powder alone; there are also powders such as NiCrBSi prepared by the atomization method, and the sintering temperature is as high as 1050 °C The above will increase the degree of thermal damage to the diamond, and even carbonization will occur.

Method used

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  • Copper-manganese based prealloy powder for metal-diamond soldering, and its prodn. method
  • Copper-manganese based prealloy powder for metal-diamond soldering, and its prodn. method
  • Copper-manganese based prealloy powder for metal-diamond soldering, and its prodn. method

Examples

Experimental program
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Embodiment 1

[0027] The copper-manganese-based pre-alloy powder for metal-diamond brazing in this embodiment is made of the following components by weight percentage: Cu 60%, Mn 31.7%, Ti 8%, La 0.3%.

[0028] The preparation method of the pre-alloyed powder of the present embodiment is carried out in the following steps:

[0029] (1) Take the ingredients according to the above proportioning ratio, and place them in the smelting furnace;

[0030] (2) Under the condition of vacuum degree of 10MPa, heat to 1200°C to melt the ingredients;

[0031] (3) Fill the powder collector with 6m 3 The purity is 99.999% high-purity argon;

[0032] (4) Pour the melted ingredients into a thermal insulation leak bag with a temperature of 1300°C, use high-purity argon as the atomizing gas, atomize the above-mentioned melted ingredients through the atomizing nozzle, and form powder in the powder collector , the atomizing gas pressure is 4MPa, the particle size of the obtained pre-alloyed powder is less tha...

Embodiment 2

[0034] The preparation steps are the same as in Example 1, except that the weight percentage of each component is changed: Cu 62%, Mn32.9%, Ti 5%, La 0.1%, appended Figure 4 It is shown that the melting point of the pre-alloyed powder of this embodiment is between 850-880°C.

Embodiment 3

[0036] The preparation steps are the same as in Example 1, only changing the weight percentage of each component: Cu 58.6%, Mn31.2%, Ti 10%, La 0.2%, with Figure 5 It is shown that the melting point of the pre-alloyed powder of this embodiment is between 860-880°C.

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Abstract

A CuMn-based prealloy powder used for the soldering between metal and diamond is proportionally prepared from Cu, Mn, Ti, and La or Ce through mixing, vacuum smelting, and atomizing in high-purity argon gas.

Description

technical field [0001] The invention relates to a pre-alloyed powder and a preparation method thereof, in particular to a copper-manganese-based pre-alloyed powder of a metal-diamond hybrid composite material product and a preparation method thereof. Background technique [0002] Due to its extremely high hardness, diamond is widely used in geological drilling, oil extraction, architectural decoration, microelectronic components and machinery manufacturing, especially in hard and brittle materials such as ceramics, glass, stone, silicon wafers, polymers, It plays an irreplaceable role in sawing, scribing, grooving, drilling, grinding and polishing of quartz crystals, magnetic materials and hard alloys. [0003] The diamonds used in industry are in the form of fine particles, generally 0.01-0.50mm in size, and cannot perform the cutting function independently as a single component, and usually need to be used in combination with the base (carcass) material. The core of compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B22F9/08
Inventor 徐可为南俊马赵宁袁洁
Owner XI AN JIAOTONG UNIV
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