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tantalum concentration
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  钽浓度
     It is found that the density of the molten Ni-Ta alloys decreases with a rise in temperature, but increases with the increase of tantalum concentration in the alloys.
     结果表明:熔融Ni-Ta 二元合金的密度随温度的增加而减少,但随合金中钽浓度的增加而增加;
短句来源
     The molar volume of molten Ni-Ta binary alloys increases with the increase of temperature and tantalum concentration. The partial molar volume of tantalum in molten Ni-Ta binary alloy has been approximately calculated.
     熔融Ni-Ta 二元合金的摩尔体积随温度和合金中钽浓度的增加而增加,并对钽在熔融Ni-Ta二元合金中的偏摩尔体积进行了计算。
短句来源
     The effects of tantalum concentration,temperature and reaction time on the particle size and morphology,and the effects of temperature and calcined time on the crystalline of tantalum oxide have been investigated.
     研究了水解过程中乙醇钽浓度、温度、加料时间对产品粒度的影响以及煅烧温度与时间对Ta2O5晶形的影响。
短句来源
  相似匹配句对
     And the concentration
     对HDL、LDL腔内壁面浓度与
短句来源
     At the concentration of 10g.
     10g.
短句来源
     Tantalum and its Alloys
     钽及其合金
短句来源
     Tantalum is used across the entire concentration range at atmospheric boiling and above.
     钽适用于常压沸点及沸点以上的整个浓度范围;
短句来源
     THE CATALYTIC WAVE OF TANTALUM
     钽的催化波
短句来源
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  tantalum concentration
Effect of tantalum concentration on the composition and properties of the
      
The molar volume of liquid Ni-Ta binary alloys increases with the increase of temperature and tantalum concentration.
      
It is found that the density of the liquid Ni-Ta alloys decreases with the increasing temperature, but increases with the increase of tantalum concentration in the alloys.
      
The increase in tantalum concentration has strong influence on the sintering process of the system.
      


Hard metal has been implanted with nitrogen plus tantalum dual ions at temperature of 100℃ and 400℃ with a dose of 8×10 17ions·cm -2.Microhardness measurements were performed to evaluate the surface property improvements.Auger electron spectroscopy is used to determine the nitrogen and tantalum concentration depth profiles.The thickness of implanted layers increased by about an order of magnitude when the temperature was elevated from 100℃ to 400℃.Higher surface hardness is obtained in the higher...

Hard metal has been implanted with nitrogen plus tantalum dual ions at temperature of 100℃ and 400℃ with a dose of 8×10 17ions·cm -2.Microhardness measurements were performed to evaluate the surface property improvements.Auger electron spectroscopy is used to determine the nitrogen and tantalum concentration depth profiles.The thickness of implanted layers increased by about an order of magnitude when the temperature was elevated from 100℃ to 400℃.Higher surface hardness is obtained in the higher temperature implantion,an improvement of 200% for the 400℃ implantation.Scanning electron microscopy image shows distinct microstructure changes,and X-ray diffraction (XRD)showed the presence of nitrides of tantalum,tungsten in the implanted surface.

利用升温离子注入技术 ,在PSII装置中实现了N +Ta双注入对硬质合金的有效表面改性 ,注入剂量为8× 10 1 7ions·cm- 2 ,注入表面温度分别为 10 0℃和 40 0℃。用显微硬度计测定硬度 ,表明试样表面显微硬度均有提高 ,其中 40 0℃试样表面显微硬度提高最大 ,高达 2 0 0 %。用俄歇电子能谱分析元素的浓度剖面 ,发现把温度从 10 0℃提高到 40 0℃ ,其注入层深度显著增加。X射线衍射测出了注入层表面形成的WN、TaN析出相。升温双元离子注入取得升温单元离子注入改性同样的效果 ,并获得比单元注入更好的复合优化强化层

The density of molten Ni-Ta alloys has been measured by a modified pycnometric method. It is found that the density of the molten Ni-Ta alloys decreases with a rise in temperature, but increases with the increase of tantalum concentration in the alloys. The molar volume of molten Ni-Ta binary alloys increases with the increase of temperature and tantalum concentration. The partial molar volume of tantalum in molten Ni-Ta binary alloy has been approximately calculated.

用改良密度法对熔融Ni-Ta 二元合金的液态密度进行了精密测量。结果表明:熔融Ni-Ta 二元合金的密度随温度的增加而减少,但随合金中钽浓度的增加而增加;熔融Ni-Ta 二元合金的摩尔体积随温度和合金中钽浓度的增加而增加,并对钽在熔融Ni-Ta二元合金中的偏摩尔体积进行了计算。

High-purity tantalum oxide nanoparticles were prepared by using tantalum ethoxide as materials through the following three processes,such as hydrolysis,dryness and calcining.The effects of tantalum concentration,temperature and reaction time on the particle size and morphology,and the effects of temperature and calcined time on the crystalline of tantalum oxide have been investigated.The optimum conditions of hydrolysis were chose as tantalum of 1.0 mol/L,at about 50 ℃ for 15 min.After five...

High-purity tantalum oxide nanoparticles were prepared by using tantalum ethoxide as materials through the following three processes,such as hydrolysis,dryness and calcining.The effects of tantalum concentration,temperature and reaction time on the particle size and morphology,and the effects of temperature and calcined time on the crystalline of tantalum oxide have been investigated.The optimum conditions of hydrolysis were chose as tantalum of 1.0 mol/L,at about 50 ℃ for 15 min.After five minutes,the pH value was adjusted to about 8~9 by adding ammonia aqueous,at the same time,the temperature increased to about 80℃-85℃,then keeping the temperature constant for half an hour.The optimal calcining conditions were chose at 800℃ for 2 h.The tantalum oxide content is more than 99.997% and the granularity is about 35 nm.

以自制高纯乙醇钽为原料,通过水解、干燥与煅烧生产粒度约35nm的高纯Ta2O5纳米粉。研究了水解过程中乙醇钽浓度、温度、加料时间对产品粒度的影响以及煅烧温度与时间对Ta2O5晶形的影响。选取水解最佳条件为:乙醇钽浓度1.0mol/L,水解温度50℃左右,加料时间约15min。加完后,搅拌5min,接着加入氨水溶液调节pH值到8~9,同时升温至80℃~85℃保温30min;煅烧温度800℃,时间2h。得到的Ta2O5产品粒度约35nm,纯度>99.997%。

 
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