Boron nitride is a new material with excellent properties and has been widely used in many fields. In this paper, the basic information, properties and structures, preparation methods, application fields and prospects of boron nitride are introduced.

Introduction

Boron nitride is a compound composed of nitrogen and boron with the formula BN. It is a crystal structure composed of alternating boron and nitrogen atoms. Boron nitride has many excellent properties, such as high heat resistance, electrical insulation, chemical stability, etc., which makes it widely used in many fields.

Nature and structure

Boron nitride has many excellent properties. It has high heat resistance and can remain stable at high temperatures. In addition, boron nitride also has good electrical insulation, and its insulation performance is similar to silicon dioxide. Boron nitride also has chemical stability and is not easy to react with acids, bases and other chemicals. In addition, boron nitride also has low density, high strength and other excellent properties.

The crystal structure of boron nitride consists of alternating boron and nitrogen atoms. In the crystal structure of boron nitride, each boron atom is connected to three nitrogen atoms and one boron atom, and each nitrogen atom is connected to three boron atoms and one nitrogen atom. This crystal structure makes boron nitride highly symmetrical and stable.

Preparation method

The preparation methods of boron nitride mainly include heat treatment, dissolution and casting. Among them, heat treatment is one of the most commonly used preparation methods. The method is to react boric acid and sodium nitrate at high temperatures to produce boron nitride and sodium oxide. The solution method is to react boric acid and urea at high temperatures to produce boron nitride and ammonia. The casting method is to cast the mixed boric acid and graphite through the mold into a certain shape of boron nitride products.

Application field

Boron nitride has been widely used in many fields. In the aviation field, boron nitride can be used to manufacture aircraft engine parts, high temperature resistant materials, etc. In the automotive field, boron nitride can be used to manufacture auto parts, brake pads and so on. In the field of machinery, boron nitride can be used to manufacture mechanical parts, bearings, etc. In the field of electronics, boron nitride can be used to manufacture electronic components, circuit boards, etc. In addition, boron nitride can also be used in the manufacture of ceramic products, glass products and other fields.

Prospects and prospects

With the continuous development of science and technology, the application field of boron nitride will continue to expand. In the future, the development of boron nitride will mainly focus on the following aspects:

1. Refinement: By improving the production process and technology, the production of smaller particle size, higher purity boron nitride to meet the needs of high-end fields.

2. Functionalization: By adding other elements or using special surface treatment technology, boron nitride is endowed with more functions, such as conduction and magnetism.

3. Environmental protection: Adopt more environmentally friendly production processes and technologies to reduce the production cost and environmental pollution of boron nitride.

In short, as a new material with excellent properties, boron nitride has been widely used in many fields. With the continuous development of science and technology, the performance and application fields of boron nitride will continue to expand, and make more important contributions to the development of human beings.