网络稀有金属与硬质合金 网络释义 1. 稀有金属与硬质合金 DGJW40钢结硬质合金的显微... ... 显微缺陷 TG1 TB3稀有金属与硬质合金RARE METALS AND CEMENTED CARBIDES尤 … d.wanfangdata.com.cn|基于21个网页
although the carbide TaC is used in cemented-carbide tools for machining hard metals. Nearly all naturally occurring tantalum is in one stableisotope,tantalum-181. However, a small amount, 0.012 percent, istantalum-180, which has the unusual property of being found in its excited state. The ...
Cemented carbideHydrothermal treatmentResource recoveryTungstenCobalt.Wet processes for recycling of WC-Co scraps by hydrothermal treatment were investigated with the aim to develop a new recycling system for recovery and reuse of WC (or W) and Co with low cost and low energy. Hydrothermal ...
[The Minerals, Metals & Materials Series] Rare Metal Technology 2017 || Disclosure of the Kinetic Relations of Semidirect Cemented Carbide Leaching in Acid... H Kim,S Alam,NR Neelameggham,... 被引量: 0发表: 2017年 Rheo-processing of an alloy specifically designed for semi-solid metal ...
Ti2SnC自蔓延高温合成显微形貌反应机理以2Ti/Sn/C和Ti/Sn/TiC粉末为原料,采用自蔓延高温合成(SHS)技术合成Ti2SnC材料,并研究两种粉末原料对反应合成Ti2SnC的影响.研究结果表明,采用SHS技术以2Ti/Sn/C和Ti/Sn/TiC粉末为原料,均可合成Ti2SnC,产物中含有少量的TiC和Sn.以2Ti/Sn/C原料合成的Ti2SnC,其板条晶粒...
Cemented carbides doped with rare earths: C.Lin et al. (General Research Inst. for Non-Ferrous Metals, Beijing, China.)doi:10.1016/0026-0657(00)93813-XELSEVIERMetal Powder Report
三溴偶氮胂分光光度法硅钙钡合金钡含量研究了三溴偶氮胂与钡的显色反应及共存离子的影响.结果表明,在0.3 mol/L的H_3PO_4介质中,钡与显色剂形成稳定的紫色络合物,最大吸收波长为618 nm,表观摩尔吸光系数为3.90×10~4 L /(mol·cm);在25 mL的溶液中,钡量在0～40 μg范围内符合比尔定律,显色反应具有...
Ni-Co合金镀层单一变量法硬度结合性能退火在硫酸盐体系中采用单一变量法研究了电流密度、镀液温度和pH值对电镀Ni-Co合金镀层硬度的影响规律,确定了电镀Ni-Co合金镀层的优化工艺条件:镀液温度45℃,镀液pH值3,电流密度6 A/dm2;于该条件下在铜铬锆合金基体上制备出了硬度高、结合性能良好的Ni-Co合金镀层,并研究了...
对明矾石精矿经焙烧-焙砂硫酸选择性富集后所得的富镓物进行NaOH浸出,离子交换分离试验研究.结果表明,NaOH浸出过程中,在NaOH浓度75%,浸出时间15 min,L/S=3:1,搅拌速率300 r/min下,Ga浸出率可达98.84%.离子交换过程中,在吸附原液NaOH浓度150 g/L,Rexp-31树脂用量150 g/L,喷淋速率5 mL/min,树脂床高15 cm...
高纯稀土金属制备方法评价手段存在问题发展方向综述了高纯稀土金属的主要制备方法(如真空熔炼、真空蒸馏、区域熔炼、电解精炼、固态电迁移及联合法等)和评价手段,分析了国内高纯稀土金属研究存在的问题以及未来发展的方向.武淑珍江西理工大学工程研究院王铁虎江西理工大学...