Cu-Sn-Ti solder and method for brazing Ti2AlC ceramics and Cu with same

A cu-sn-ti, solder technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of short life and high cost of current-carrying friction devices, and achieve good conductivity and high temperature. Excellent thermal stability, high conductivity connection effect
CN101987402AInactive Publication Date: 2011-03-23HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2011-03-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a Cu-Sn-Ti solder and a method for brazing Ti2AlC ceramics and Cu with the same, relating to a Cu-Sn-based solder and a method for brazing Ti2AlC ceramics and Cu with the same and realizing the high-strength and high-conductivity connection of the Ti2AlC ceramics and the Cu. The method comprises the following steps of: respectively grinding, polishing and clearing the Ti2AlC ceramics and the Cu and assembling the Ti2AlC ceramics, the Cu-Sn-Ti solder and the Cu into a brazing assembly unit; and then, brazing in a vacuum brazing furnace. The invention successfully realizes the connection between the Ti2AlC ceramics and the Cu and reaches the joint compression shearing strength of 40.53-187 MPa, the conductivity of 5.13*106-5.997*106 S / m, high joint strength and good electrical conductivity. The Ti2AlC ceramics and Cu connector is used for a carrier friction device and can solve the problems of high cost and shorter service life existing in the carrier friction device in traditional engineering applications.
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Description

Technical field

[0001] The invention relates to a Cu-Sn based solder and brazing Ti with it 2 AlC ceramic and copper method. Background technique

[0002] Ti 2 AlC ceramics are ternary layered ceramics M n+1 AX n One of them, it is a structure / function integrated ceramic with both metal and ceramic properties. Ti 2 The space lattice of AlC ceramics is hexagonal crystal system, and the space group is P6 3 / mmc, by Ti 6 The C octahedral layer and the two-dimensional densely packed Al atomic layer are alternately arranged. First, Ti atoms and Al atoms are combined by van der Waals force, which makes the ceramic have a layered structure and good self-lubricating properties; secondly, Ti atoms and C atoms are covalently bonded, and the Ti-C bond is firm. The combination gives the ceramics excellent physical, chemical and mechanical properties, such as high melting point, high thermal stability; good oxidation resistance; high elastic modulus and high yield strength. In addition, Al ...

Claims

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