| 摘要 |
Tubular components made from densely sintered aluminium nitride which has a satisfactory thermal conductivity, a high electrical resistance, satisfactory dielectric properties, as well as high strength. Advantageously one or more oxidic materials may be added to the aluminium nitride. Preferably yttrium oxide is used as an additive although the additives may consist generally of oxides of alkaline earth metals or of rare earth metals or of transition elements of the IVth, Vth or VIth groups of the periodic system or they may consist of aluminium oxide or silicon oxide. The invention is particularly useful for making laser tube components. |
