CAJ | 학술논문

为研究接触表面之间的微摩擦力，建立振子模型。采用该模型计算镍钛形状记忆合金2个原子之间的摩擦力，并用原子力显微镜对镍钛形状记忆合金马氏体和奥氏体相的摩擦力大小进行测量。结果表明，在纳米条件下摩擦力与外载荷和表面物理性质，如弹性模量、泊松比、晶格常数等关系密切；镍钛形状记忆合金奥氏体相的摩擦因数小于马氏体相。理论分析和实验结果基本一致，证明采用振子模型计算微摩擦力符合实际情况。
위연구접촉표면지간적미마찰력，건립진자모형。채용해모형계산얼태형상기억합금2개원자지간적마찰력，병용원자력현미경대얼태형상기억합금마씨체화오씨체상적마찰력대소진행측량。결과표명，재납미조건하마찰력여외재하화표면물이성질，여탄성모량、박송비、정격상수등관계밀절；얼태형상기억합금오씨체상적마찰인수소우마씨체상。이론분석화실험결과기본일치，증명채용진자모형계산미마찰력부합실제정황。
An oscillator model was set up to study on micro?friction between the contact surfaces. The friction between two atomic of NiTi shape?memory alloys was calculated using oscillator model,and the friction force of NiTi shape?memory alloys at the martensite phase and austenite phase was measured through atomic force microscope ( AFM ) . Results show that,at nanoscale,friction is greatly influenced by load and surface physical property,such as elastic modulus,Poisson’ s modulus,and lattice constant.The friction coefficient of martensite phase is lower than that of austenite phase.Theoretical a?nalysis and experimental results are consistent,which confirms that the atomic scale friction force calculation using oscilla?tor model conforms to the actual situation.