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李慕勤, 庄明辉, 尹柯, 王军. 高速火焰喷涂钛——生物玻璃涂层残余应力分析[J]. 焊接学报, 2009, (2): 65-67.
引用本文: 李慕勤, 庄明辉, 尹柯, 王军. 高速火焰喷涂钛——生物玻璃涂层残余应力分析[J]. 焊接学报, 2009, (2): 65-67.
LI Muqin, ZHUANG Minghui, YIN Ke, WANG Jun. Residual stress analysis on the Ti-bioglass coatings produced by high velocity flame spraying[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (2): 65-67.
Citation: LI Muqin, ZHUANG Minghui, YIN Ke, WANG Jun. Residual stress analysis on the Ti-bioglass coatings produced by high velocity flame spraying[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (2): 65-67.

高速火焰喷涂钛——生物玻璃涂层残余应力分析

Residual stress analysis on the Ti-bioglass coatings produced by high velocity flame spraying

  • 摘要: 采用高速火焰喷涂方法及涂层处理技术,以Ti6Al4V为基体,喷涂钛-生物玻璃(G),涂层经700℃晶化处理.采用基于掠入射X射线衍射分析(GIXRD)的残余应力分析方法测量涂层残余应力.高速火焰喷涂Ti/G涂层晶化处理后产生的残余应力均为压应力,其值与生物玻璃含量成正比,与添加底釉生物玻璃粒度有关,G尺寸较大时,粒子飞行携带动能较大,产生残余压应力较大.结果表明,涂层的残余压应力是由于高速火焰喷涂速度快,粒子所带动能大,在涂层表面造成喷射冲击现象,形成喷射冲击残余压应力,这对提高涂层结合强度起到积极作用。

     

    Abstract: High velocity flame spraying and coating process technology was adopted to spray pure titanium powder with addition of glaze glass(G)on Ti6Al4V substrate.The coatings were crystallized at temperature 700℃.The residual macro-stress in the coatings was tested by grazing incidence X-ray diffraction(GIXRD).And the result shows that the coating present residual compressive stress(RCS).The stress is proportional to the content of the glaze glass.The larger particle size, which increased the kinetic energy of the flying particle, produces larger stress.The reason for presenting RCS is that high spray speed and large kinetic energy generated jet impingement which leads to the existence of the RCS.This is helpful to increase the bonding strength of the coatings.

     

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