金刚石翻译3..doc

Coating thickness effects on diamond coated cutting tools F. Qin, Y.K. Chou,D. Nolen and R.G. Thompson Available online 12 June 2009 金刚石涂层刀具的涂层厚度的影响 作者：F. Qin, Y.K. Chou,D. Nolen and R.G. Thompson 发表日期：2009 Abstract： Chemical vapor deposition (CVD)-grown diamond films have found applications as a hard coating for cutting tools. Even though the use of conventional diamond coatings seems to be accepted in the cutting tool industry, selections of proper coating thickness for different machining operations have not been often studied. Coating thickness affects the characteristics of diamond coated cutting tools in different perspectives that may mutually impact the tool performance in machining in a complex way. In this study, coating thickness effects on the deposition residual stresses, particularly around a cutting edge, and on coating failure modes were numerically investigated. 化学气相沉积法（CVD），金刚石薄膜的发现，作为涂层刀具的应用。即使传统的金刚石涂层的使用似乎是公认的切削，为不同的加工操作选择适当的涂层厚度没有经常研究。涂层厚度影响涂层刀具在不同的角度，可能相互影响，在复杂的方式，在机械加工工具金刚石工具的性能特点。在这项研究中，在沉积层厚度对残余应力，特别是围绕一个前沿，对涂层的破坏模 式进行了数值研究 On the other hand, coating thickness effects on tool surface smoothness and cutting edge radii were experimentally investigated. In addition, machining Al matrix composites using diamond coated tools with varied coating thicknesses was conducted to evaluate the effects on cutting forces, part surface finish and tool wear. The results are summarized as follows. Increasing coating thickness will increase the residual stresses at the coating–substrate interface. On the other hand, increasing coating thickness will generally increase the resistance of coating cracking and delamination. Thicker coatings will result in larger edge radii; however, the extent of the effect on cutting forces also depends upon the machining condition. For the thickness range tested, the life of diamond coated tools increases with the coating thickness because of delay of delaminations. Keywords: Coating thickness; Diamond coating; Fi