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中文摘要：
在硬质合金微型刀具加工高硅铝合金等难加工材料时,通过采用改进的热丝CVD装置开展了DLC涂层硬质合金微钻制备工艺优化,得到了最优沉积工艺,并配合高速加工高硅铝合金（Si15%）材料微小孔钻削性能对比试验,分析了刀具的磨损机理。结果表明：两步预处理方法适合复杂形状硬质合金衬底的预处理方法。钻削高硅铝合金时,DLC涂层具有低摩擦系数和高耐磨损特性,同等切削条件下,涂层微钻的切削寿命比未涂层硬质合金微钻提高了10倍。
英文摘要：
In machining the particle reinforced aluminum based composite material with high Si content using the cobalt-cemented tungsten carbide micro cutting tools, diamond like carbon （DLC） films are deposited on cobalt-cemented tungsten carbide micro-drills with two-step pretreatment method. Characteristics of DLC coated tools are investigated in bias-enhanced HFCVD system with the optimized hot filament arrangement. The optimization deposition technology is obtained and the wear mechanism of cutting tools is analyzed. The drilling performance of DLC coated tools is verified by the experiments of cutting particle reinforced aluminum based composite material （Si 15% in volume） compared with uncoated ones. Experimental results show that the two-step pretreatment method is appropriate for complex shaped cemented carbide substrates and ensures the good adhesive strength between the diamond film and the substrate. The cutting performance of DLC coated tool is enhanced 10 times when machining the Si particle reinforced aluminum based metal matrix composite compared with that of uncoated ones under the same cutting conditions.
同期刊论文项目
同项目期刊论文
Simulation of Substrate Temperature Distribution in Diamond Films Growth on Cemented Carbide Inserts
Simulation of Temperature Field in the Growth of Diamond Crystals by Hot Filament CVD and Experiment
Effect of boron concentration on adhesion and cutting performance of diamond-coated cemented carbide
Influence of Surface Morphology of Diamond Films on Their Frictional Behaviors in Dry and Water Envi
Fabrication and application of nano-microcrystalline composite diamond films on the interior-hole su
Deposition and friction properties of ultra-smooth composite diamond films on Co-cemented tungsten c
Fabrication and characterisation of ultra fine-grained diamond coatings on the interior hole surface
Deposition and Characterization of Nanocrystalline Diamond Films on Co-cemented Tungsten Carbide Ins
Deposition of smooth Fine-grained diamond films with high adhesive strength on tungsten carbide inse
Deposition of diamond films on smooth surfaces of cemented carbide inserts with cobalt boride interl
Fabrication of DLC Coated Cobalt- Cemented Tungsten Carbide Micro-drills and Their Cutting Performan
Study on fabrication and cutting performance of high quality diamond coated PCB milling tools with c
Growth of Nanocrystalline Diamond Films on Co-Cemented Tungsten Carbide Substrates by Hot Filament C
Precise quantitative evaluation of the adhesive strength of diamond thin films by bulge/blister test
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