Silicon Carbide

Klaus Liethschmidt

Klaus Liethschmidt

Elektroschmelzwerk Kempten GmbH, Werk Grefrath, Frechen, Germany

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Josef Garbes

Josef Garbes

ESK - SIC GmbH, Frechen, Germany

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First published: 15 April 2008

Abstract

1.

Introduction

2.

Properties

3.

Production

3.1.

Reaction Mechanism

3.2.

Raw Materials

3.3.

The Acheson Process

3.4.

The ESK Process

3.5.

Processing of the Crude Product

3.6.

Other Production Methods

4.

Quality Control

5.

Toxicology and Occupational Health

6.

Uses

6.1.

Abrasives

6.2.

Refractories

6.3.

Metallurgy

6.4.

Electrical Technology

6.5.

Electronics

6.6.

Structural Ceramics

7.

Economic Aspects

Silicon carbide is a highly important industrial product, which has unique chemical and physical properties. It is characterized by a great hardness, excellent chemical resistance, and high thermal shock stability. Silicon carbide is used in metallurgy and electronics, in technical ceramics and refractory materials, and, due to its hardness, as an abrasive. The compound is produced industrially from silicon dioxide and carbon in mainly two production processes. Meanwhile, the majority of production has shifted from Europe and North America to China and South America. Silicon carbide is a nonhazardous material.

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