【金刚石-cBN-硬质合金超硬复合体的研制】张祖培.pdf

Dissertation Submitted to Changchun University of Science and TechnologyforPhDDegree DEVELOPMENTOFDIAMOND,CUBICBORON NITRIDEANDHARDMETALULTRAHARD COMPOSITEBODY PhD Student:Ma Baosong Major:Exploration Engineering Tutor:Prof.

题目:金刚石-cBN-硬质合金超硬复合体的研制金刚石-cBN-硬质合金超硬复合体的研制(摘要)毕业专业:探矿工程博士导师:张祖培教授博士生:马保松关键词:金刚石,立方氮化硼,硬质合金,低温活化烧结,耐磨性,抗冲击性能,机理分析目前,国内冲击凿岩用的潜孔锤钻头、钎头以及牙轮钻头等,其切削具一般都采用YG类硬质合金柱齿,由于硬质合金的耐磨性相对较低,在钻进坚硬岩层时,钻头的寿命和钻进时效都很低.金刚石超硬复合材料钻头具有较高的耐磨性,已被广泛地应用于钻并工程,但由于其抗冲击性能较差,不适于冲击凿岩钻进,只能用于回转钻进。

题目:金刚石-cBN-硬质合金超硬复合体的研制 Development of Diamond, Cubic Boron Nitride andHardmetal Ultrahard CompositeBody(ABSTRACT) KEYWORDS:Diamond,CubicBoronNitride,Hardmatel,UItrahard Composite Body,Low temperature activation sintering,Hot pressing Abrasiveresistance,Toughness against impact,Analysis of mechanis