摘要
利用热等静压法制备一种金属增韧的Si3N4陶瓷基增压器涡轮。这种新型涡轮既有常规氮化硅材料高强度、高导热系数和低膨胀系数等特性,又在很大程度上克服了陶瓷固有的脆性,增加了金属的可塑性,具有高韧性、高耐磨防腐蚀性能,可以在高强、高压等恶劣环境下工作。用Si3N4陶瓷代替现有K418镍基合金,提高了增压器的响应性,降低了柴油机的排放烟度,消除了涡轮出现的滞后响应。
A metal toughening azotized Si3 N4-based supercharger turbine was manufactured by using hot isostatic pressing. Since the new turbine both has high strength, high thermal conductivity and low thermal expansion coefficient and other characteristics of conventional silicon nitride materials, but also to a large extent overcomes the inherent brittleness of ceramic, an increase of the plasticity of the metal with high toughness, high wear-resistant anti-corrosion, it can be used in high strength, high pressure and harsh environments. Using Si3N4 ceramics instead of the existing K418 nickel-based alloys, the responding character of the supercharger is improved, exhaust smoke of diesel engines is reduced and lag response of the turbine is eliminated.
出处
《机床与液压》
北大核心
2012年第1期30-33,共4页
Machine Tool & Hydraulics
基金
山东省教育厅科技计划项目(J10LD19)
山东自然科学基金(ZR2010EL011)
关键词
SI3N4陶瓷
增压器
涡轮
Si3N4 ceramic
Diesel supercharger
Turbine
