通过无压浸渗法制备铁基金刚石复合材料

Fabrication of Fe-Based Diamond Composites by Pressureless Infiltration.

作者信息

Li Meng, Sun Youhong, Meng Qingnan, Wu Haidong, Gao Ke, Liu Baochang

机构信息

College of Construction Engineering, Jilin University, Changchun 130000, China.

Key Laboratory of Drilling and Exploitation Technology in Complex Conditions of Minsitry of Land and Resources, Changchun 130000, China.

出版信息

Materials (Basel). 2016 Dec 12;9(12):1006. doi: 10.3390/ma9121006.

DOI:10.3390/ma9121006

PMID:28774124

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5457001/

Abstract

A metal-based matrix is usually used for the fabrication of diamond bits in order to achieve favorable properties and easy processing. In the effort to reduce the cost and to attain the desired bit properties, researchers have brought more attention to diamond composites. In this paper, Fe-based impregnated diamond composites for drill bits were fabricated by using a pressureless infiltration sintering method at 970 °C for 5 min. In addition, boron was introduced into Fe-based diamond composites. The influence of boron on the density, hardness, bending strength, grinding ratio, and microstructure was investigated. An Fe-based diamond composite with 1 wt % B has an optimal overall performance, the grinding ratio especially improving by 80%. After comparing with tungsten carbide (WC)-based diamond composites with and without 1 wt % B, results showed that the Fe-based diamond composite with 1 wt % B exhibits higher bending strength and wear resistance, being satisfactory to bit needs.

摘要

为了获得良好的性能并便于加工，通常使用金属基基体来制造金刚石钻头。为了降低成本并获得所需的钻头性能，研究人员对金刚石复合材料给予了更多关注。本文采用无压浸渗烧结法，在970℃下保温5分钟，制备了用于钻头的铁基浸渍金刚石复合材料。此外，将硼引入铁基金刚石复合材料中。研究了硼对密度、硬度、抗弯强度、磨削比和微观结构的影响。含1 wt%硼的铁基金刚石复合材料具有最佳的综合性能，磨削比尤其提高了80%。与含和不含1 wt%硼的碳化钨（WC）基金刚石复合材料相比，结果表明含1 wt%硼的铁基金刚石复合材料具有更高的抗弯强度和耐磨性，满足钻头需求。