SrCO<sub>3</sub>添加量对钨合金电极材料组织和性能的影响

张保红; 王玲; 唐亮亮

doi:10.19591/j.cnki.cn11-1974/tf.2018.01.009

SrCO₃添加量对钨合金电极材料组织和性能的影响

doi: 10.19591/j.cnki.cn11-1974/tf.2018.01.009

张保红^{1, 2, ,},
王玲^{1, 2},
唐亮亮^{1, 2}

1.
安泰科技股份有限公司，北京 100081
2.
安泰天龙钨钼科技有限公司，北京 100094

详细信息

通讯作者:
张保红, E-mail: zhangbaohong@atmcn.com

中图分类号: TG146.411
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- 文章访问数: 220
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- PDF下载量: 14
- 被引次数: 0
出版历程
- 收稿日期: 2017-05-17
- 刊出日期: 2018-02-27

Effect of SrCO₃ content by mass on the microstructure and properties of tungsten alloy electrode materials

ZHANG Bao-hong^{1, 2
, ,},
WANG Ling^{1, 2},
TANG Liang-liang^{1, 2}

1.
Advanced Technology and Materials Co., Ltd., Beijing 100081, China
2.
ATTL Advanced Materials Co., Ltd., Beijing 100094, China

More Information

Corresponding author: ZHANG Bao-hong, E-mail: zhangbaohong@atmcn.com

摘要

摘要: 本文分析了SrCO₃添加量（质量分数）对钨合金电极材料组织、密度、硬度、电导率、热导率的影响。结果表明：SrCO₃质量分数在3%~7%范围内对电极材料的组织均匀性影响不大；SrCO₃质量分数为10%时，材料中部分区域出现了Sr₃WO₆的聚集，呈现出明显的组织不均。电极材料的相对密度随SrCO₃质量分数增加缓慢降低，当SrCO₃质量分数达到10%时，降低幅度加大。电极材料的硬度、电导率、热导率等性能随SrCO₃质量分数增大而降低，当SrCO₃质量分数达到10%时降低幅度加大，与相对密度随SrCO₃质量分数增大而变化的趋势一致。在本文研究范围内，SrCO₃最佳添加量（质量分数）为7%。
- SrCO₃ /
- 钨合金 /
- 电极材料 /
- 组织 /
- 性能
Abstract: The effects of SrCO₃ content by mass on the microstructure and properties of tungsten alloy electrode materials were investigated, such as relative density, hardness, electrical conductivity, and thermal conductivity. It is shown that, the microstructures can be hardly affected by the mass fraction of SrCO₃ in the range of 3%~7%. Sr₃WO₆ cluster is present, when the SrCO₃ mass fraction increases to 10%, leading to the locally uneven microstructures. The relative density of tungsten alloy gradually decreases with the SrCO₃ mass fraction increase; when the SrCO₃ mass fraction reaches 10%, the reduction tendency becomes dramatically. As to other properties, such as electrical, thermal conductivity, and hardness, the results have the same tendency. In sum, the optimum mass fraction of SrCO₃ is 7%.
- SrCO₃ /
- tungsten alloy /
- electrode materials /
- microstructure /
- properties

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图 1 SrCO₃添加量对W-Ni-Sr合金相对密度的影响

Figure 1. Effect of SrCO₃ content by mass on relative density of W-Ni-Sr alloy electrode materials

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图 2 添加质量分数为7%SrCO₃的W-Ni-Sr合金电极材料X射线衍射图谱

Figure 2. X-ray diffraction patterns of W-Ni-Sr alloy electrode materials with the SrCO₃ mass fraction of 7%

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图 3 添加不同质量分数SrCO₃的电极材料背散射电子像：（a）3%；（b）5%；（c）7%；（d）10%

Figure 3. Backscattered electron images of W-Ni-Sr alloy electrode materials with different SrCO₃ mass fractions: (a) 3%; (b) 5%; (c) 7%; (d) 10%

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图 4 添加不同质量分数SrCO₃的电极材料金相照片：（a）3%；（b）5%；（c）7%；（d）10%

Figure 4. Metallographic pictures of W-Ni-Sr alloy electrode materials with different SrCO₃ mass fractions: (a) 3%; (b) 5%; (c) 7%; (d) 10%

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图 5 SrCO₃质量分数对W-Ni-Sr合金电极材料硬度的影响

Figure 5. Effect of SrCO₃ content by mass on the hardness of W-Ni-Sr alloy electrode materials

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图 6 SrCO₃质量分数对W-Ni-Sr合金电极材料电导率的影响

Figure 6. Effect of SrCO₃ content by mass on the electrical conductivity of W-Ni-Sr alloy electrode materials

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图 7 SrCO₃质量分数对W-Ni-Sr合金电极材料热导率的影响

Figure 7. Effect of SrCO₃ content by mass on the thermal conductivity of W-Ni-Sr alloy electrode materials

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表 1 实验用W-Ni-Sr电极材料化学成分（质量分数）

Table 1. Composition of experimental W-Ni-Sr sample %

编号 W Ni SrCO₃

1# 94 3 3

2# 92 3 5

3# 90 3 7

4# 87 3 10

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表 2 添加不同质量分数SrCO₃的W-Ni-Sr合金电极材料寿命

Table 2. Electrode life of W-Ni-Sr alloy with different SrCO₃ mass fractions

编号电极寿命/次

3% SrCO₃ 5% SrCO₃ 7% SrCO₃ 10% SrCO₃

1# 68 85 93 81

2# 78 90 98 78

3# 72 93 104 85

平均值 73 89 98 81

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