A sintering powder comprising: a first type of metal particles having a mean longest dimension of from 100 nm to 50 μm.

A sintering powder comprising: a first type of metal particles having a mean longest dimension of from 100 nm to 50 μm.

A braze coating material with a nickel core and a coating, a preparation method thereof, and a braze coating method are provided. The braze coating material with a nickel core and a coating requires no binder and has strong adhesion ability, and includes the nickel core, a coating layer, a hardened layer, and a protective layer sequentially from inside to outside. The nickel core is metallic nickel having a surface subjected to a roughening treatment. The coating layer is a first brazing flux layer including hard particles, a first brazing flux, and a brazing filler metal powder. The hardened layer contains a second brazing flux and is covered with the protective layer mainly composed of a silicate.

A braze coating material with a nickel core and a coating, a preparation method thereof, and a braze coating method are provided. The braze coating material with a nickel core and a coating requires no binder and has strong adhesion ability, and includes the nickel core, a coating layer, a hardened layer, and a protective layer sequentially from inside to outside. The nickel core is metallic nickel having a surface subjected to a roughening treatment. The coating layer is a first brazing flux layer including hard particles, a first brazing flux, and a brazing filler metal powder. The hardened layer contains a second brazing flux and is covered with the protective layer mainly composed of a silicate.

The invention relates to a metal paste, containing (A) 75 to 90% by weight of copper and/or silver particles that are provided with a coating containing at least one organic compound, (B) 5 to 20% by weight of an organic solvent, and (C) 2 to 20% by weight of at least one type of metal particles different from the particles of (A) and having an average particle size (d50) in the range of 0.2 to 10 μm. The metal particles of component (C) are selected from the group consisting of molybdenum particles and nickel core-silver shell particles with a silver content of 10 to 90% by weight.

The invention relates to a metal paste, containing (A) 75 to 90% by weight of copper and/or silver particles that are provided with a coating containing at least one organic compound, (B) 5 to 20% by weight of an organic solvent, and (C) 2 to 20% by weight of at least one type of metal particles different from the particles of (A) and having an average particle size (d50) in the range of 0.2 to 10 μm. The metal particles of component (C) are selected from the group consisting of molybdenum particles and nickel core-silver shell particles with a silver content of 10 to 90% by weight.

A sintering powder comprising: a first type of metal particles having a mean longest dimension of from 100 nm to 50 μm.

A sintering powder comprising: a first type of metal particles having a mean longest dimension of from 100 nm to 50 μm.

A braze preform includes a filler metal, a flux in communication with the filler metal, and a luminescent material covering at least a portion of the filler metal. The luminescent material is equal to or less than 0.15% total weight of the braze ring. Further, the luminescent material includes at least one of a luminescent ink, a solvent, and a binder. The solvent may be one of a bromide-based solvent or a non-chlorine-based solvent. The binder may be an acrylic resin.

A braze preform includes a filler metal, a flux in communication with the filler metal, and a luminescent material covering at least a portion of the filler metal. The luminescent material is equal to or less than 0.15% total weight of the braze ring. Further, the luminescent material includes at least one of a luminescent ink, a solvent, and a binder. The solvent may be one of a bromide-based solvent or a non-chlorine-based solvent. The binder may be an acrylic resin.