How Does Graphene Make Tungsten Carbide Coating Longer?
- Details
- Category: Tungsten Information
- Published on Monday, 23 October 2017 21:28
Thermal spraying tungsten carbide coating is mainly used in aviation, aerospace, machinery etc., key friction movement parts surface wear protection.
In the actual working environment, because the tungsten carbide coating of high hardness and friction coefficient of friction system for larger, matched with the friction wear is serious, and even affect the service life of wear protective coating.
In 2004, graphene material published in the world, this is called "the king of new materials," the new carbon material to the industry has brought tremendous changes. Some scholars have found that graphene is carbon atoms tightly packed into a new carbonaceous material single two-dimensional honeycomb lattice structure, is the basic unit of construction of solid lubricant graphite is the most common, with lower friction coefficient than graphite, additive for self lubrication and antifriction coating of tungsten carbide coating.
Graphene itself is also a carbon element, some scholars believe that graphene as a combination of carbon and tungsten on it. The graphene is lubricated as tungsten carbide, the main method is to grow nano tungsten carbide in situ on the surface of graphene oxide. The carbon source is supplied with graphene as carrier and reacted with ammonium metatungstate to produce WC under high temperature H2 atmosphere.
AMT and GO were mixed in the ratio of 1: 5 ratio, at the reduction temperature of 700 °C, the heating rate of 70 °C / min environment, AMT reaction adsorption on graphene oxide to form dispersed nano-WC particles, the lamellar structure of graphene oxide is relatively complete, and the original film state of graphene oxide is effectively preserved.
By strengthening the above processes, the graphene carbide composite material has achieved its self lubrication function, the friction coefficient has been greatly reduced, and its material properties have been strengthened step by step.
- Tungsten Carbide Manufacturer & Supplier, Chinatungsten Online: tungsten-carbide.com.cn
- Tungsten News & Prices of China Tungsten Industry Association: www.ctia.com.cn
- Molybdenum News & Price: news.molybdenum.com.cn
- Tel.: 86 592 5129696; Fax: 86 592 5129797; Email: sales@chinatungsten.com
sales@chinatungsten.com
闽公网安备 35020602000140号