采用在镍基钎料中分别添加3%、5%和7%(质量分数)Cu-P-Sn组成新型复合钎料，并进行金刚石磨粒的钎焊实验，利用SEM、EDS和XRD对金刚石焊后的界面碳化物形貌及钎料组织进行测试分析。结果表明：添加5%Cu-P-Sn的复合钎料进行金刚石钎焊时，钎焊温度有所下降，金刚石表面碳化物较规整，并且数量有所下降，降低金刚石的热损伤。新型钎料中形成树枝晶α-Ni基固溶体和枝晶间Ni 31 Si 12、Cr 7 C 3等化合物的组织，不同含量Cu-P-Sn与Ni-Cr-B-Si合金可以较大程度互溶，可以实现钎料性能的调控，降低金刚石的热损伤。
A series of new composite brazing fillers metal were got by adding 3%, 5% or 7% (mass fraction) Cu-P-Sn in the primary brazing filler metal Ni-Cr-B-Si, respectively, then, they were used to braze diamond particles. The interface morphology of diamond carbide and the microstructure of brazing filler metal were tested by SEM, EDS and XRD. The results show that, when the composite brazing filler metal containing 5% Cu-P-Sn alloy, the carbide on the surface of the diamond is more regular and less with brazing temperature decreases, which decreases the thermal damage to the diamond. In the brazing filler alloy, the microstructures, such as dentrite included solid solution of Ni with some carbides like Ni31Si12 and Cr7C3, are formed. As the added component, Cu-P-Sn at different proportions can be dissolved into the primary brazing filler Ni-Cr-B-Si in large degree, which can adjust the properties of the filler and reduce the heat damage to the diamond.
参考文献
| [1] | 吴茂;曹车正;Rafi-ud-din;何新波;曲选辉.金刚石/铜复合材料与氧化铝陶瓷的Ag-Cu-Ti活性钎焊[J].中国有色金属学报（英文版）,2013(6):1701-1708. |
| [2] | 王美娟;王日初;彭超群;冯艳;张纯.固结磨粒金刚石线锯的研究进展[J].中国有色金属学报,2013(5):1368-1379. |
| [3] | Duan, Duan-Zhi;Xiao, Bing;Wang, Wei;Zhang, Zi-Yu;Wang, Bo;Han, Peng;Ding, Xiao-Yang.Interface characteristics and performance of pre-brazed diamond grains with Ni-Cr composite alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2015:626-631. |
| [4] | Bojiang Ma;Feng Lian.Study on the use of CuSnTi brazing alloy for induction brazing of diamond grits surface-treated by direct current plasma chemical vapor deposition[J].International Journal of Refractory Metals & Hard Materials,2013NOV.(NOV.):339-344. |
| [5] | 卢金斌;徐九华.真空钎焊金刚石界面碳化物的形貌[J].中国有色金属学报,2007(7):1143-1148. |
| [6] | 卢金斌;汤峰;孟普;王志新.Ni-Cr合金真空钎焊金刚石的热损伤分析[J].焊接学报,2010(8):25-28. |
| [7] | 郑炜;黄国钦;徐西鹏.高温钎焊过程中 Ni-Cr 合金对金刚石磨粒静压强度的影响[J].金刚石与磨料磨具工程,2014(3):39-42. |
| [8] | Yan Chen;Yucan Fu;Honghua Su.The effects of solder alloys on the morphologies and mechanical properties of brazed diamond grits[J].International Journal of Refractory Metals & Hard Materials,2014Jan.(Jan.):23-29. |
| [9] | Duan, Duan-Zhi;Xiao, Bing;Wang, Bo;Han, Peng;Li, Wen-Jie;Xia, Si-Wei.Microstructure and mechanical properties of pre-brazed diamond abrasive grains using Cu-Sn-Ti alloy[J].International Journal of Refractory Metals & Hard Materials,2015:427-432. |
| [10] | 陈燕;徐鸿钧;傅玉灿;苏宏华.Ni-Cr合金真空钎焊金刚石的表面石墨化[J].焊接学报,2009(9):21-24. |
| [11] | 赵彬;贺亚勋;卢金斌;赵鹏;张理想.添加Cu粉对Ni-Cr合金真空钎焊金刚石磨粒界面组织的影响[J].中原工学院学报,2014(3):29-32,78. |
| [12] | 贾磊 .Cu-Ni-Si合金近平衡相变过程与导电机制研究[D].西安理工大学,2009. |
| [13] | 柳瑞清;杨胜利;王刚;廖钰敏;钟强强.Si对Cu-7.5Ni-5Sn合金铸态组织的影响[J].特种铸造及有色合金,2014(3):237-240. |
| [14] | 宋月清;甘长炎;夏志华;袁冠森;李永良.金刚石工具胎体性能的弱化问题研究[J].人工晶体学报,1998(4):368-372. |
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