摘要
本文对三种低温陶瓷结合剂的性能进行综合研究,结果发现:耐火度为775℃,流动性为110%~130%,线膨胀系数为5.79×10-6℃-1的低温陶瓷结合剂V2的综合性能优异。通过差热分析发现,在测定温度范围内结合剂V2没有明显的晶相产生。用结合剂V2制备的陶瓷结合剂CBN磨具试样在800℃烧成后,磨具试样的抗弯强度达到最佳值67.5 MPa。制备的磨盘在磨削时锋利性好,磨削中间修整次数少,磨盘的耐用度高。运用扫描电子显微镜(SEM)对磨削后CBN磨片的磨削面形貌进行观察,表明结合剂对磨粒黏结牢固,断面组织均匀。
Properties of three different kinds of low-temperature vitrified bonds were studied.It was found that vitrified bond V2,of which refractory was 775 ℃,fluidity was 110%～130%,thermal expansion was 5.79×10-6 ℃-1,had good colligation properties.TG and TGA analysis results showed that no crystals were observed in bond in the testing temperature.The flexural strength of CBN tools made with vitrified bond V2 were 67.5 MPa when sintered under temperature 800 ℃.Vitrified bond CBN tools were tested and showed good sh...
出处
《金刚石与磨料磨具工程》
CAS
北大核心
2009年第1期75-78,共4页
Diamond & Abrasives Engineering
基金
河南省重点科技攻关项目072102230005
关键词
CBN研磨盘
陶瓷结合剂
强度
CBN face grinding wheel
vitrified bond
strength
