烧结助剂种类对B4C陶瓷摩擦学性能的影响
Effect of sintering additive types on tribological properties of B4C ceramics
张巍 1张杰2
作者信息
- 1. 中国科学院金属研究所沈阳材料科学国家研究中心,辽宁沈阳 110016
- 2. 中国科学院金属研究所沈阳材料科学国家研究中心,辽宁沈阳 110016;沈阳工业大学材料科学与工程学院,辽宁沈阳 110870
- 折叠
摘要
为了研究烧结助剂种类对B4C陶瓷摩擦学性能的影响,以B4C微粉为原料,分别添加4种不同种类的烧结助剂(炭黑、SiC、Al2O3和Al2O3-Y2O3),采用热压烧结工艺制备B4C陶瓷,研究了添加不同种类烧结助剂的B4C陶瓷与SiC对磨球在干滑动条件下的摩擦与磨损行为.结果表明,在本试验条件下,添加Al2O3烧结助剂的B4C陶瓷(B4C(Al2O3))和对应的SiC对磨球具有最光滑的磨损表面,B4C(Al2O3)/SiC摩擦副表现出最低的摩擦系数,B4C(Al2O3)陶瓷表现出最低的磨损率.添加炭黑、SiC和Al2O3烧结助剂的B4C陶瓷的磨损机理主要为晶粒断裂,而添加Al2O3-Y2O3烧结助剂的B4C陶瓷的磨损机理主要为晶粒拔出.
Abstract
In order to investigate the effect of sintering additive types on tribological properties of B4C ceramics,the B4C ceramics were prepared by hot press sintering method using B4C powder as raw materials and adding four different types of sintering additives(carbon black,SiC,Al2O3 and Al2O3-Y2O3),respectively,and the friction and wear behaviors of the B4C ceramics with different types of sintering additives sliding against SiC balls under dry sliding conditions were studied.The results show that under the conditions of this experiment,both the B4C ceramics with Al2O3 sintering additive(B4C(Al2O3))and the corresponding SiC ball have the smoothest worn surfaces,the B4C(Al2O3)/SiC friction pair shows the lowest friction coefficient,and the B4C(Al2O3)ceramics show the lowest wear rate.The wear mechanism of the B4C ceramics with added carbon black,SiC and Al2O3 sintering additives is mainly grain fracture,while the wear mechanism of the B4C ceramics with added Al2O3-Y2O3 sintering additive is mainly grain pull-out.
关键词
B4C陶瓷/烧结助剂/摩擦/磨损/晶粒Key words
B4C ceramics/sintering additive/friction/wear/grain引用本文复制引用
基金项目
辽宁省自然科学基金(2022-MS-013)
中国科学院金属研究所自主部署项目(E255L401)
沈阳材料科学国家研究中心青年人才项目(E21SL412)
出版年
2024
NETL
NSTL
万方数据