介绍了电火花表面沉积工艺的基本原理和技术特点,以及国内外电火花沉积技术在钛合金表面强化领域的研究现状.在钛合金表面进行电火花沉积,可得到具有高硬、耐磨、耐高温氧化、低摩擦系数的特殊表面涂层.虽然电火花表面强化技术具有特殊的强化效果,但存在着电火花强化层的表面粗糙度不容易控制、生产效率低、强化工艺不稳定的缺点.因此,今后要深入研究电火花放电机理,进一步提高强化效率,研究不同电极、基体材料的强化工艺.
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