CAJ | 학술논문

在MMU-10型多功能摩擦磨损试验机上采用销盘湿式摩擦方式，研究WC-11Co硬质合金与两种花岗岩摩擦副的摩擦磨损性能，利用扫描电子显微镜观察硬质合金的磨损表面形貌。结果表明：在同一摩擦条件下，硬质合金/高硬度花岗岩摩擦副的摩擦因数较低；当载荷为700 N时，硬质合金/高硬度花岗岩摩擦副的硬质合金磨损质量损失较高，与硬质合金/低硬度花岗岩摩擦副的硬质合金磨损质量损失差约为4%；而在其他低载荷摩擦条件下，两摩擦副的硬质合金磨损质量损失差均在12%左右，这表明在较低载荷作用下，配副材料对硬质合金磨损的影响相对增大；硬质合金/高硬度花岗岩的磨损机理主要为Co粘结相塑性变形、WC晶粒脱落，硬质合金/低硬度花岗岩的磨损机理主要为硬质合金表面的刮擦。
재MMU-10형다공능마찰마손시험궤상채용소반습식마찰방식，연구WC-11Co경질합금여량충화강암마찰부적마찰마손성능，이용소묘전자현미경관찰경질합금적마손표면형모。결과표명：재동일마찰조건하，경질합금/고경도화강암마찰부적마찰인수교저；당재하위700 N시，경질합금/고경도화강암마찰부적경질합금마손질량손실교고，여경질합금/저경도화강암마찰부적경질합금마손질량손실차약위4%；이재기타저재하마찰조건하，량마찰부적경질합금마손질량손실차균재12%좌우，저표명재교저재하작용하，배부재료대경질합금마손적영향상대증대；경질합금/고경도화강암적마손궤리주요위Co점결상소성변형、WC정립탈락，경질합금/저경도화강암적마손궤리주요위경질합금표면적괄찰。
The friction and wear properties of WC-11Co cemented carbides against two kinds of granites were evaluated on the MMU-10 pin-on-disk multifunctional friction and wear tester under wet sliding condition, and the morphological analyses of the worn surface were studied by scanning electron microscope. The results show that, under the same friction condition, the friction coefficient of the cemented carbides against granite with higher hardness is lower than those of the cemented carbides against granite with lower hardness. Under the load of 700 N, the mass loss of the cemented carbides against granite with higher hardness is 4% more than that of the cemented carbides against granite with lower hardness; and under the lower load, the mass loss difference of the cemented carbides between the two friction pairs is about 12%, which indicates that rubbing-pair material has relatively decreasing influence on the wear of the cemented carbides. The main wear mechanism of the cemented carbides against granite with higher hardness is the plastic deformation of cobalt binder phase and the removals of some tungsten carbide grains, and scratching mainly occurs in the cemented carbides against granite with lower hardness.