Abstract In this paper, V2O5 was added into vitrified bond as a surfactant to improve the holding force of the vitrified bond to diamond abrasive and to improve the grinding performance of vitrified diamond grinding wheel. Results showed that the refractoriness of the vitrified bond with 4 wt% V2O5 reached 555 °C, 17 °C lower than that of the vitrified bond without V2O5. During sintering, vanadium ions in the bond was enriched on the diamond surface and combined with the unsaturated carbon atom existed on the surface of diamond to form V C bond, which can improve the wettability between vitrified bond and diamond abrasive; Li2Si2O5 phase began to precipitate in bond when addition of V2O5 content reached 2 wt%; The Flexural strength and Rockwell hardness were significantly improved from 83.7 MPa and 87.4 HRB to 112.6 MPa and 108.1 HRB, 34.5% and 23.7% higher than those of diamond composites without V2O5, respectively. The performance of the diamond grinding wheel prepared by adding 2 wt% V2O5 to the vitrified bond was improved, The roundness and straightness errors of the 50th zirconia workpiece in one dressing cycle decreased from 3.31 and 2.11 μm to 3.02 and 1.9 μm, respectively, as compared with the vitrified diamond wheel without V2O5.

中文翻译：

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V2O5添加量对陶瓷结合剂对金刚石磨料润湿性及金刚石砂轮磨削性能的影响

摘要 本文在陶瓷结合剂中加入V2O5作为表面活性剂，以提高陶瓷结合剂对金刚石磨料的保持力，提高陶瓷金刚石砂轮的磨削性能。结果表明，含 4 wt% V2O5 的玻璃化结合剂的耐火度达到 555 °C，比不含 V2O5 的玻璃化结合剂的耐火度低 17 °C。在烧结过程中，结合剂中的钒离子富集在金刚石表面，与金刚石表面存在的不饱和碳原子结合形成VC结合剂，可提高陶瓷结合剂与金刚石磨料的润湿性；当V2O5的加入量达到2wt%时，Li2Si2O5相开始结合析出；弯曲强度和洛氏硬度从 83.7 MPa 和 87.4 HRB 显着提高到 112.6 MPa 和 108.1 HRB，提高了 34.5% 和 23。分别比不含 V2O5 的金刚石复合材料高 7%。在陶瓷结合剂中加入2 wt% V2O5制备的金刚石砂轮性能得到改善，第50个氧化锆工件在一个修整周期内的圆度和直线度误差分别从3.31和2.11 μm降低到3.02和1.9 μm，如下所示与不含 V2O5 的陶瓷金刚石砂轮相比。