Aluminium oxide is a chemical compound of aluminium and oxygen. It has the chemical formula Al2O3. It is the most commonly occurring oxide of aluminium. It is commonly called alumina, however, the other names are aloxite, aloxide and alundum depending the function. It occurs naturally in its crystalline polymorphic form. It is known as corundum, which form several varities of precious gemstones sapphire and rubies. It is major use is in the production of aluminium metal. Due to its hardness it is also used as an abrasive material. Uses of Advanced Ceramics The Advanced ceramics are known for their remarkable properties and uses. Machining Ceramic play a critical role in industries like manufacturing, defence, space exploration, electronics and telecommunications,. 1. Alumina The is highly versatile ceramic and serves important uses in electronic industry. It displays a wide range of electrical properties from insulators to resistors to semiconductors. Machining of Alumina is done to form various grades of advanced ceramic structures. Ceramic Alumina is a good heat conductor. This allows the electronic systems to function efficiently. 2. Boron carbide: This material has very high degree of hardness. These are used to design of body armours. Boron carbide (B4C) is an extremely hard ceramic material used for forming bullet strikes the ceramic plate. 3. Sialons: Sialons are made up of elements such as silicon (Si), aluminium (Al), oxygen (O) and nitrogen (N). These are a new addition to family of ceramic. They have excellent thermal shock resistance materials. ================== I have rich experience in the machining industry. I want to make people aware valuable ceramic elements are machined.