方案摘要
方案下载应用领域 | |
检测样本 | |
检测项目 | |
参考标准 |
Like most carbide-based composites, the two main characteristics of alumina–tungsten carbide (Al2O3–WC) composites are high hardness and high wear resistance. These features confer the composites important engineering applications, in particular when they are used as cutting tools. The present research involved a study of Al2O3–WC nanometric powders obtained through reactive milling. In this process, high-energy milling promotes the reaction in a mixture of reactive powders. The material was milled in a high-energy SPEX 8000 Mixer/Mill, using WO3,Al and C precursor powders. The highly exothermic self-propagating high-temperature synthesis (SHS) type reaction was self-sustained, producing a temperature peak that was detected by a thermocouple attached to the external surface of the vessel. Using stoichiometric proportions of the reagents to reduce theWO3 and to obtainWC, and adding Al2O3 as diluent, the SHS reaction occurred up to a limit of 0.8mols of diluent, forming not only alumina but also aW2C mixture with littleWC. To obtain onlyWC it was required the addition of more than 0.8mols of C, which indicates that the reaction may have occurred through a gaseous phase reaction mechanism.
【CEM】检测葡萄干、苏丹娜和醋栗中的重金属污染
【Hanson】使用垂直扩散池进行透皮贴剂释放测试
【CEM】Fmoc-His(Boc)-OH在基于Fmoc的固相肽合成中的应用
相关产品
CEM Mars6 高通量密闭高压微波消解仪
EDGE全自动快速溶剂萃取仪
CEM MARS-X 微波溶剂萃取系统
ISCO X系列高压高精度柱塞泵
Hanson 6/8杯药物溶出度仪
ISCO 快速制备液相色谱仪
Katanax X600重型电熔样机/熔融炉/熔片机
CEM Smart 6 通用微波水分测量仪
Hanson 14杯药物溶出度仪
CEM Discover 2.0 300mL腔体环形聚焦单模微波合成仪
SPEX大容量液氮冷冻研磨仪
CEM ORACLE通用快速脂肪分析仪
HG-600 Geno/Grinder (原SPEX 2010)高通量动植物组织研磨机
SPEX BM-400/450高能量球磨机(原SPEX 8000M/D)
SPEX CG-500高通量液氮冷冻研磨仪(SPEX 6875D)
关注
拨打电话
留言咨询