Preparation and application of diamond tool case

To expand a large diamond tool applications, developed diamond film coated tools. It is the use of the CVD method, the diamond crystal deposition in tungsten, cobalt

(Top K10) carbide or silicon nitride ceramic substrate. Can be synthesized thickness of less than 30 ~ 50μm thin film coating, or made into large

At 0.5mm thick film, directly as the Diamond blade is welded to the tool blank. It is a chemical vapor deposition method into holocrystalline pure polycrystalline diamond

material, the grain is a radical gap between the gap. It is generally attached to the substrate surface membranous, it is also often called diamond films

. Preparation of CVD diamond cost far less than large particles of high quality natural single crystal diamond, and surfaces can be a large area, it also has exactly

the same structure with the natural diamond. As a natural diamond, PCD and CVD diamond comparative data on the mechanical properties. Figure 1CVD Diamond

SEM images of stone membrane can be seen from Table 1, CVD diamond tool as compared with the PCD cutting tools, PCD cutting tools due to the cobalt metal binding

agent, making it more resistant to breakage, the PCD will reduce the hardness of cobalt, on the corrosion sensitivity ( especially processed plastics), cobalt at high

temperatures will accelerate the diamond

Transition to graphite, it is suitable for roughing and PCD tool cutting tool has a higher fracture toughness requirements of the occasion. CVD diamond metal bond

tools do purity close to 100%, the hardness, wear resistance and high thermal conductivity, mechanical properties of natural diamond PCD CVD comparison

Diamond HV hardness.