| TiC-TiN-TiC-Al_2O_3涂层CP3型硬质合金抗弯强度及其分散性的研究 |
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| 引用本文： | 高见,李建平,马文存,吴婉,沈保罗,易勇.TiC-TiN-TiC-Al_2O_3涂层CP3型硬质合金抗弯强度及其分散性的研究[J].工具技术,2002,36(11):10-12. |
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| 作者姓名： | 高见 李建平 马文存 吴婉 沈保罗 易勇 |
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| 作者单位： | 1. 成都工具研究所
2. 四川大学 |
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| 摘 要： | 通过X衍射法对CP3型硬质合金涂覆TiC TiN TiC Al2 O3 四层硬质层的组织结构进行了研究 ,用扫描电镜观察了涂层的断口形貌 ,用划痕法测定了涂层与基体的结合力 ,用三点弯曲法测定了涂覆前、后该硬质合金的抗弯强度 ,并应用Weibull统计方法对该材料的抗弯强度及其分散性进行了分析。研究结果表明 :涂层组织由TiC、TiN和Al2 O3 组成 ,涂层中无发达的柱状晶 ,涂层与基体结合良好 ,涂覆后硬质合金的平均抗弯强度从涂覆前的2 119MPa下降到 15 80MPa ,但其抗弯强度的分散性变化不大
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| 关 键 词： | 硬质合金 CVD 涂层结构 抗弯强度 分散性 |
Study on Bending Strength of CP3 Cemented Carbide Coated with Four Coated Layers (TiC-TiN-TiC-Al2O3) and Its Scatter |
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| Gao Jian Li Jianping Ma Wencun,et al.Study on Bending Strength of CP3 Cemented Carbide Coated with Four Coated Layers (TiC-TiN-TiC-Al2O3) and Its Scatter[J].Tool Engineering(The Magazine for Cutting & Measuring Engineering),2002,36(11):10-12. |
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| Authors: | Gao Jian Li Jianping Ma Wencun |
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| Affiliation: | Gao Jian Li Jianping Ma Wencun et al |
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| Abstract: | The structures of CP3 cemented carbide coated with four coated layers(TiC TiN TiC Al 2O 3)by CVD process were investigated through XRD. The appearance of fracture of the coating was observed by using stereoscan. Bonding force between coating and basal body was measured by scratching method. Three point bending strength was surveyed and its scatter was also analyzed by Weibull statistic. Results show that the coating consists of TiC, TiN and Al 2O 3, in which there is no developed column crystal, bonding between coating and base is very nice, after coating bending strength of the hard metal decreases from 2119 MPa to 1580 MPa and the scatter of bending strength has little change. |
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| Keywords: | cemented carbide CVD coating structure bending strength scatter |
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