【摘要】 本文研究了陶瓷结合剂与金刚石的界面反应、界面结构和结合状况。通过对改性Li2O-Al2O3-SiO2微晶玻璃和B2O3-PbO-ZnO-SiO2低熔玻璃镀钛、不镀钛金刚石试样的电镜分析、XRD分析以及两种结合结合剂与镀钛、不镀钛金刚石试样的抗折强度测定,研究了结合剂(Li2O-Al2O3-SiO2微晶玻璃和B2O3-PbO-ZnO-SiO2玻璃)与金刚石(镀钛和不镀钛)的结合机理和结合状况。发现:改性Li2O-Al2O3-SiO2玻璃经过合适的热处理工艺能在金刚石试样中出现以Li2Al2Si3O10为主晶相的微晶体,试条的抗折强度是B2O3-PbO-ZnO-SiO2低熔玻璃金刚石试样的2.5倍以上;镀钛金刚石与微晶玻璃结合剂之间产生化学结合,抗折强度比不镀钛金刚石试条提高20%以上;而对B2O3-PbO-ZnO-SiO2玻璃结合剂而言,金刚石表面镀钛对试条的抗折强度的提高无明显作用。更多还原

【Abstract】 The interface reaction,interface structure and bond status between vitrified bond and diamond with Ti coating was investigated in this paper.Using analytical methods,such as SEM,XRD,the anti-bending strength of vitrified bond diamond blocks was tested,the bonding mechanism and status between vitrified bond and diamond were discussed.It was found that the Li2Al2Si3O10 microcrystal can be found in glass ceramic bonded diamond sample blocks by appropriate crystallization method;the anti-bending strength of glass ceramic bond diamond block is as about 2.5 times as that of B2O3-PbO-ZnO-SiO2 glass bond;there are chemical bonding between glass ceramic bonds and Ti coated diamonds grains,so the anti-bending strength of this sample block can be increased by 20% compared with that of diamonds without Ti coating;while for B2O3-PbO-ZnO-SiO2 glass bond,plating titanium onto diamond crystal has no use in improving the anti-bending strength of diamond sample blocks.更多还原