Pollution-free manufacturing method for surface electric heating elements

Abstract

A pollution-free manufacturing method for surface electric heating elements is characterized in that a formula of a surface modification solution comprises, by weight, 100g of stannous fluoroboric acid, 1-1.2g of antimony trifluoride, 0.2-0.4g of cupric acetate monohydrate, 0.2-0.4g of magnesium acetate tetrahydrate, a proper amount of hydrofluoric acid and a proper amount of acetic acid, and 100-500ml of distilled water. The pollution-free manufacturing method for the surface electric heating elements comprises the steps of (1) preparing the surface modification solution, wherein the distilled water is acidized through the acetic acid, the stannous fluoroboric acid, the cupric acetate monohydrate and the magnesium acetate tetrahydrate are weighed, stirred and melted in the acidized distilled water respectively, antimony trifluoride is quickly weighed, stirred and added in the acidized distilled water, the mixture is stirred, and all the solutions are mixed evenly, sealed and stored at a shady, cool and ventilating place for use; (2) cleaning base materials; (3) feeding the base materials into a surface modification furnace which is 550-650 DEG C to carry out surface modification on the base materials; (4) brushing silver paste at proper positions of radiant faces, and carrying out mechanical wire leading; (5) powering on to carry out aging by using voltages 1.25 times using voltages. The pollution-free manufacturing method for the surface electric heating elements is suitable for manufacturing the pollution-free surface electric heating elements.

Description

technical field [0001] The invention belongs to semiconductor heat source technology, in particular to a pollution-free manufacturing method of a surface electric heating element. Background technique [0002] With the rapid development of the semiconductor industry and electrothermal technology, especially the rapid rise of electrothermal film technology, its electrothermal elements have significant advantages such as small thermal inertia, easy temperature control, high electrothermal conversion efficiency, and energy saving, which have been widely used. [0003] However, the current electrothermal film technology, except for the coating and sintering film forming technology (this technology has poor film uniformity and poor bonding force; easy to crack and fall off), most of those who use the spraying pyrolysis method to form a film use the corresponding metal chloride. The compound is dissolved in anhydrous ethanol or a mixed solution of hydrochloric acid and ethanol as ...

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Problems solved by technology

[0003] However, the current electrothermal film technology, except for the coating and sintering film forming technology (this technology has poor film uniformity and poor bonding force; easy to crack and fall off), most of those who use the spraying pyrolysis method to form a film use the corresponding metal chloride. The compound is dissolved in anhydrous ethanol or a mixed solution of hydrochloric acid and ethanol as a film-forming solution

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