火焰原子吸收法测定高温合金中镁含量

本方法用氯化锶做干扰抑制剂,解决了高温合金中对测定镁有影响的共存元素的干扰问题。用乙炔－空气火焰原子吸收法直接测定高温合金中的微量镁,检出限为０．００００３Ｍｇ／ｍｌ。     

用添加剂抑制固体火箭发动机排气二次燃烧的研究

介绍了采用化学添加剂抑制固体火箭发动机排气二次火焰的实验研究。10种化学添加剂的实验结果表明,其中5种对二次火焰有抑制作用。进而又以它们对一种双基推进剂和一种中能无烟推进剂装药发动机羽流二次火焰的抑制效果,以及羽流对电磁波衰减的影响,进行了实验验证。另外,还用附加药片法对添加剂的消焰效果做了实验,证明这是一种简便实用又不影响推进剂燃烧性能的抑制剂施加方法。     

吸热型碳氢燃料的结焦研究(Ⅰ)测焦装置及结焦抑制剂

建立了一套脉冲微型反应色谱系统，用以研究吸热型碳氢燃料结焦性能和结焦抑制剂效果。以正庚烷为裂解原料，在所研究的四种结焦抑制剂中，首次发现噻吩效果最好，加入质量分数为1×10     

不锈钢裂纹标准块超厚度工程镀铬质量控制

分析了不锈钢镀铬辐射裂纹标准块的镀层质量,叙述了镀铬工艺参数的选择和改进镀层质量的方法。     

集成电路铜互连线的静态腐蚀速率研究

利用静态腐蚀法分别研究了络合剂甘氨酸、氧化剂双氧水、阴离子表面活性剂十二烷基硫酸铵(ADS)、腐蚀抑制剂吡唑在碱性条件下对铜静态腐蚀速率的影响及作用机理.实验结果表明,在一定浓度范围内甘氨酸和双氧水的协同作用会加快Cu的静态腐蚀速率,而高氧化剂浓度会使得Cu表面形成氧化层钝化膜,抑制Cu腐蚀.活性剂ADS对Cu腐蚀有抑...     

不稳定燃烧抑制剂对RDX—CMDB浇注推进剂的影响

对五种物质组成的七种单一或复合不稳定燃烧抑制剂在ＲＤＸ－ＣＭＤＢ（黑索今－复合改性双基）浇注推进剂中应用了研究，发现其中白刚玉（Ａｌ２Ｏ３）和ＳｉＣ对不稳定燃烧的抑制效果较佳。其加入方式和加入量地共不稳定燃烧抑制作用有较大的影响。当白刚 粒度与推进剂中燃烧催化剂的粒度相当时，其粒度变化对剂燃烧性能的影响较明显。且与其在螺压、粒铸推进剂中规律相似，即粒度减小，推进剂燃速增大。     

Investigation on a Sol-gel Coating Containing Inhibitors on 2024-T3 Aluminum Alloy

For a long time, chromate incorporated conversion coatings have been drawn special attention in corrosion protection of aircraft-used aluminum alloys. However, ever-increasing environmental pressures requires that non-chromate conversion coatings be developed because of the detrimental carcinogenic effects of the chromate compounds. In recent years, the sol-gel coatings doped with inhibitors were developed to replace chromate conversion coatings, and showed real promise; A sol-gel coating was prepared and its anti-corrosion behavior was investigated using the potentiodynamic scanning （PDS） and the electrochemical impedance spectroscopy （EIS）. It is found that the sol-gel coating obtained by the hydrolysis and condensation of 3-glycidoxypropyltrimethoxysilane （GPTMS） and tetramethoxysilane （TMOS） is prone to form defects if cured at the room temperature, whereas if cured at a higher temperature （100℃）, these flaws can be avoided. Furthermore, it can be seen that addition of anti-foam agents and surfactants will reduce the faults if cured at the room temperature. Effects of the corrosion inhibitors, CeCl3 and mercaptobenzothiazole （MBT）, in the sol-gel coatings on 2024-T3 aluminum alloy were also investigated. Results show that the corrosion resistance of the sol-gel coatings containing CeCl3 proves to be better than that of the pure and MBT added sol-gel coatings by the electrochemical methods.