利用自制的球-棒疲劳试验机，研究了纳米金刚石粉对钢球接触疲劳寿命的影响。
Effects of nano diamond particles on contact fatigue life of steel ball were evaluated on a self-made ball-rod contact fatigue tester.
金刚石比钢还硬。
本研究成功地解决了胎体与钢基体结合强度、同心度及金刚石掉块等关键技术问题。
The key technical problems of the bond strength between the matrix and steel body, the concentricity and diamond segments sealing off from the body are successfully resolved in the studies.
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