Non-stick pan coating layer and preparation method thereof

Abstract

The invention provides a non-stick pan coating layer and a preparation method thereof. The coating layer comprises Al-Cu-Fe-Cr-B quasicrystalline alloy which has components as follows by the atomic percentage: 70-90 of Al, 1-15 of Cu, 5-15 of Fe, 5-15 of Cr, and the balance of B and unavoidable impurity. The method comprises the specific steps as follows: (1) smelting alloy materials with a spraying device at a temperature of 900-1100 DEG C to prepare alloy powder; (2) spraying the alloy coating layer on a boiler basal body with a plasma spraying device, with a main gas feed rate of 65 L / min, a secondary gas feed rate of 20-30 L / min, an arc current of 550-590A, an arc voltage of 45-60V, a powder delivering amount of 10-15 g / min, and a coating layer thickness of about 100-200 micro. At a cooking temperature, the invention has the advantages of stable chemical property, large rigidness, lower cost than Teflon or organic silicon, low surface friction coefficient, and the like.

Description

Technical field [0001] The present invention relates to cookware, in particular to the preparation of a non-stick pan coating that does not contain an organic coating (such as polytetrafluoroethylene or organic silicon). Background technique [0002] For a long time, people have used traditional metal pans (cast iron, stainless steel, aluminum and aluminum alloy) to cook food, but the phenomenon of food sticking to the pan often occurs during the cooking process. This not only destroys the shape of the food, but also the food that sticks to the pot is prone to burnt, and even produces harmful substances, which affect human health. In addition, it also increases the difficulty of washing the cookware, which brings inconvenience to cooking. The existing solution to the problem of non-stick pans is to coat a layer of Teflon anti-stick coating on the inner surface of traditional metal pans. The principle is to use Teflon coatings with extremely low surface energy characteristics. . ...

AI Technical Summary

Problems solved by technology

First of all, the strength of the PTFE coating is poor, it is easy to fall off and damage, and it will soften during cooking, so you can only use a wooden spatula, and you cannot cook hard food

At the same time, this kind of non-stick pan is not suitable for cooking acidic food, otherwise it will affect the service life of the non-stick pan

In addition, the service temperature of PTFE coating generally cannot exceed 250°C, and it is difficult for people to strictly control it when using it, and it is easy to be damaged by dry burning.

There has always been controversy over whether PTFE-coated non-stick pans are harmful to human health during use, and disputes continue to arise

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