摘要
采用电解法对电镀法、热压烧结法和钎焊法制备的金刚石刀头进行腐蚀,将腐蚀后的金刚石与原始金刚石进行粒径、表面形貌、透明度、色度等的比较和分析,并对金刚石进行常温冲击强度(TI)和热冲击强度(TTI)测试,研究金刚石工具的制作方法对金刚石性能的影响。结果表明,镀液浸泡和热压后金刚石粒径基本无变化,钎焊使金刚石尺寸变大;使金刚石表面形貌粗糙度由大到小、透明度由差到好和色度值由小到大的制备方法依次为真空钎焊、热压烧结和电镀。冲击强度测试表明,每种方法制作的金刚石工具腐蚀后,金刚石的TI和TTI值都有所下降,下降幅度从大到小依次为真空钎焊、热压烧结和电镀。
The diamond tools（including bit,saw blade etc） fabricated by electroplating,hot press sintering and brazing process were corroded through electrolytic methods.The comparisons of particle size,surface morphology,transparency and chroma of the diamond tools before and after corroded were done.The room and thermal impact strength of diamond tools were measured.The effect of fabrication method on properties of diamond tools was studied.The results show that,particle size of diamond has no change after bath soaking and hot pressing,but it becomes bigger after brazing.Arranging the order of fabrication methods by diamond surface roughness in descending order,transparency from weak to strong and chroma value from low to high is brazing,hot press sintering and electroplating.Impact strength test indicates that both room and thermal impact strength values of diamond decrease after corrosion no matter which manufacturing method,the decrease extent of thermal impact strength order is brazinghot press sinteringelectroplating.
出处
《粉末冶金材料科学与工程》
EI
2011年第4期563-568,共6页
Materials Science and Engineering of Powder Metallurgy
基金
武汉市科技攻关项目(200910321113)
关键词
制作方法
金刚石性能
冲击强度
manufacturing method
diamond performance effect
impact strength
