Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention provides a ceramic material used for crucibles. The ceramic material is composed of following ingredients, by weight, 50 to 70 parts of boron nitride (BN), 10 to 20 parts of Al2O3, 0.5 to 2 parts of carbon nanotube, 6 to 10 parts of zeolite powder, and 0.5 to 3 parts of a binder. BN is covalent crystal with a hexagonal crystal structure; heat resistance, thermal conductivity, and heat stability are both high; and self-lubricating property and wear resistance are excellent. According to a preparation of the ceramic material, Al2O3, carbon nanotube, and zeolite powder are taken as the raw materials, synergism effects are achieved, and wear resistance of the ceramic material is improved further. In addition, the ceramic material is prepared via ball milling and sintering; and ball milling is capable of ensuring product precision, and increasing economic benefits and work efficiency greatly. It is shown by experiment results that wear resistance of the ceramic material used for crucibles is excellent.
The invention provides a ceramic material used for crucibles. The ceramic material is composed of following ingredients, by weight, 50 to 70 parts of boron nitride (BN), 10 to 20 parts of Al2O3, 0.5 to 2 parts of carbon nanotube, 6 to 10 parts of zeolite powder, and 0.5 to 3 parts of a binder. BN is covalent crystal with a hexagonal crystal structure; heat resistance, thermal conductivity, and heat stability are both high; and self-lubricating property and wear resistance are excellent. According to a preparation of the ceramic material, Al2O3, carbon nanotube, and zeolite powder are taken as the raw materials, synergism effects are achieved, and wear resistance of the ceramic material is improved further. In addition, the ceramic material is prepared via ball milling and sintering; and ball milling is capable of ensuring product precision, and increasing economic benefits and work efficiency greatly. It is shown by experiment results that wear resistance of the ceramic material used for crucibles is excellent.