| 摘要 |
<p>The invention relates to the use of ceramic materials containing a crystalline phase generically defined as 'oxide' and consisting of at least one metal, one semi-metal or one non-metal such as phosphorus, arsenic, carbon and selenium bonded chemically to oxygen, and represented for example by silicates such as mullite and/or cordierite, and a phase defined as 'non-oxide' and consisting of compounds of the type comprising carbides and/or nitrides of metallic and/or semi-metallic elements, and/or of metals such as aluminium and nickel and/or metal alloys such as nickel, cobalt or aluminium alloys, and/or steels. Such oxide/non-oxide ceramic materials containing the oxide and non-oxide phases in predetermined proportion are used for manufacturing ceramic products such as refractory ceramic rollers and other extruded supports for industrial firing kilns. The ceramic products obtained in this manner possess considerable properties which can solve those particularly severe situations which arise in the operation of industrial kilns such as deformation and insufficient resistance due to temperature changes. The refractory ceramic rollers and the other extruded refractory supports produced using the oxide/non-oxide ceramic material are also claimed as such, as is the process for their preparation.</p> |
