| 1. | Technical specification for silver - metaloxide electrical contacts by alloy internal oxidation method 合金内氧化法银金属氧化物电触头技术条件 |
| 2. | At present , the majority of the fabrication methods of this composite are internal oxidation and power metallurgy which have some drawbacks such as complicated fabrication , high cost and so on 目前,其制备方法主要为内氧化法和粉末冶金工艺路线,这些都存在着工艺复杂、成本昂贵等问题。 |
| 3. | Fortunately , we have succeeded to prepare cu - mgo interface specimen by internal oxidation . a plenty of different orientations with different interfaces between cu and mgo have been observed and selected by tem 我们用内氧化方法成功地制备了cu - mgo界面,运用透射电子显微镜对大量不同取向的界面进行了研究。 |
| 4. | During the course of new type vacuum internal oxidation reaction , homogeneous dispersed a - aljos particles were formed in copper matrix . the average size of a12o3 particles and their distance are 120nm and 400nm respectively 在新型真空内氧化过程中,铜基体内生成了均匀弥散分布的g - al2o3粒子,其平均尺寸和颗粒间距分别为120nm和400nm 。 |
| 5. | In this paper , metastable cu - al alloy powder with different aluminum content was prepared by mechanical alloying technique . high strength and high conductivity cu - al2c > 3 composites were prepared by a new type vacuum internal oxidation technique 本文采用机械合金化法制备了不同铝含量的亚稳态的cu - al合金粉末,采用新型真空内氧化工艺制备了不同成分的高强度高导电cu - al2o3复合材料。 |
| 6. | Two types of internal oxidation techniques were adopted , namely internal oxidation under nitrogen protect and new type vacuum internal oxidation in the present study . both techniques can achieve the oxygen partial pressure that the internal oxidation reaction of cu - al alloy can take place 本文采用的两种内氧化工艺,即氮气保护下的内氧化和新型真空内氧化工艺,都可以满足cu - al合金发生内氧化的气氛条件。 |
| 7. | The condition which the internal oxidation reaction of cu - al alloy can take place has been studied ; technique parameters have been set on the basis of theoretical analyze ; different factors which can affect the microstructure and properties of cu - al2o3 composites have also been discussed . the ambient temperature properties and the thermal stability of composites were tested . several electrical conductivity models were optimally selected to calculate the electrical conductivity of cu - ahoa composites . the results showed that : 1 研究了cu - al系合金粉末发生内氧化所需的条件,根据理论分析制定出相应的工艺参数;分析研究了各种影响cu - al2o3复合材料组织与性能的因素;测试了本课题制备的cu - al2o3复合材料的室温性能,热稳定性能;优选了适合cu - al2o3复合材料的电导模型。 |