Requirements for metals and their alloys that can be connected to glass

    In the production of electronic devices, there are many types of metals that are often connected to glass, but not all metals can form connectors with glass. The metal that can form a connection with glass must meet the connection requirements of glass. The basic requirements of metals and their alloys that can be connected to glass are as follows:

    ①The melting point of metals and their alloys must be higher than the processing temperature of glass;

    ②Metals and their alloys must have precise thermal expansion coefficient and be the same or similar to glass;

    ③The purity of the chemical composition of metals and their alloys is high, and the impurity content cannot exceed the minimum limit;

    ④Metals and their alloys must have sufficient plasticity and ductility, and must have flexibility during processing and be free of any defects;

    ⑤ No allotropic transformation is allowed in metals and their alloys, because metals and their alloys will undergo different changes in thermal expansion coefficients during allotropic transformations, which directly affect the quality of the joint;

    ⑥The glass surface is metalized, and the film and some oxide layers must be firmly adhered to the glass surface without falling off;

    ⑦The metal and its alloy metallized and connected with the glass surface must meet the requirements of electrical conductivity, thermal conductivity and other working characteristics.

    ⑧Metals and their alloys are easier to metallize the glass, and the metallized thin layer can be joined to the glass very firmly.

    ⑨Metals and alloys must have good weldability and castability with other metals and alloys.

    The metal types that meet the above requirements and commonly used in production mainly include Cu, Ti, Ni, Zr, Ta, W, Ag, Pt, Mo, Nb, Fe, etc. Commonly used alloys mainly include Fe-Ni, Fe-Ni-Co, Fe-Cr, Fe-Cr-Ni, Ni-Cu, W-Cu, Zr-Ti, Ti-Mo, Ti-V, etc.

(Huiputech)