2) buffered hydrofluoride acid
氢氟酸缓冲腐蚀液
1.
Results of a study into the etching characteristics of dry thermal trichloroethylene-growth silicon dioxide in different compositions of buffered hydrofluoride acid(BHF) are presented.
根据对掺三氯乙烯(TCE)干氧氧化的S iO2在不同配比氢氟酸缓冲腐蚀液(BHF)中的腐蚀特性的研究结果表明,在HF w t%保持不变的条件下,腐蚀速率先随着NH4F w t%的增大而上升;NH4F大于15w t%~20w t%以后,腐蚀速率反而随之降低。
3) HF etching
氢氟酸刻蚀
1.
The interface was fabricated by using HF etching on a 50 μm i.
对普通石英毛细管表面使用氢氟酸刻蚀技术进行刻蚀,并与商品化鞘流液毛细管电泳-质谱接口(Sheathflow CE-MS interface)结合,将其改装成一种新型的纳升级电喷雾质谱接口。
4) hydrofluoric acid etch
氢氟酸蚀刻
5) corrosion by fluorine
氟腐蚀
1.
By introducing the impact on sulphuric acid system equipment and alum catalyst by fluorine,this paper discusses and put forwards measures against corrosion by fluorine and its damage to catalyst.
介绍氟对硫酸系统设备及钒触媒的影响,讨论防止氟腐蚀及对触媒危害的措施。
6) hydrogen corrosion
氢腐蚀
1.
After twenty two years of operation,the high temperature shift reactor has generated serious failure caused by hydrogen corrosion This paper analyses the reason of the hydrogen corrosion of the high temperature shift reactor Measures such as hydrogen diffusing and adding inner insulating layer were taken which have extended the service life of this equipment effectivel
高温变换炉在使用 2 2年后产生了很严重的氢腐蚀鼓包缺陷。
2.
The analysis of macroforms, chemical compositions, metallographic structure and mechanisms performance as well as x-ray and electronic scanner examination have found that the rupture of the steam injection pipe was caused by hydrogen corrosion.
通过宏观形貌、化学成分、金相组织、力学性能、X射线衍射、扫描电镜观察等分析手段判断出热采注汽管线的最终破裂原因是氢腐蚀造成。
3.
The associated thermal dynamics and dynamics research system were given and the development of hydrogen corrosion testing techniques and research on the hydrogen corrosion was discussed.
综述了高温高压氢腐蚀的工业背景与研究发展历史，对高温高压氢腐蚀的评定方法和实验方法进行了概括，给出了高温高压氢腐蚀的热力学和动力学研究体系，讨论了氢蚀检测技术和有关焊接部位氢蚀研究的进展。
补充资料：缓冲液
【通用名称】
缓冲液
【其他名称】
缓冲液 附录ⅩⅤ D. 缓冲液 枸橼酸-磷酸氢二钠缓冲液(pH4.0) 甲液:取枸橼酸21g或无水枸橼酸19.2g,加水使 溶解成1000ml，置冰箱内保存。 乙液：取磷酸氢二钠71.63g，加水使溶解成1000ml。 取上述甲液61.45ml与乙液38.55ml，混合，摇匀，即得。 氨－氯化铵缓冲液(pH8.0) 取氯化铵1.07g，加水使溶解成100ml， 再加稀氨溶液 (1→30)调节pH值至8.0，即得。 氨－氯化铵缓冲液(pH10.0) 取氯化铵5.4g，加水20ml溶解后，加浓氨溶液35ml， 再加水稀释至100ml，即得。 醋酸－醋酸钠缓冲液(pH3.7) 取无水醋酸钠20g，加水300ml溶解后,加溴酚蓝指示 液1ml及冰醋酸60～80ml，至溶液从蓝色转变为纯绿色，再加水稀释至1000ml，即得。 醋酸－醋酸钠缓冲液(pH4.5) 取醋酸钠18g,加冰醋酸9.8ml,再加水稀释至1000ml， 即得。 醋酸－醋酸钠缓冲液(pH6.0) 取醋酸钠54.6g，加1mol/L醋酸溶液20ml溶解后，加 水稀释至500ml，即得。 醋酸－醋酸铵缓冲液(pH4.5) 取醋酸铵7.7g，加水50ml溶解后，加冰醋酸6ml与适 量的水使成100ml，即得。 醋酸－醋酸铵缓冲液(pH4.8) 取醋酸铵77g，加水约200ml使溶解，加冰醋酸57ml, 再加水至1000ml，即得。 醋酸－醋酸铵缓冲液(pH6.0) 取醋酸铵100g，加水300ml使溶解，加冰醋酸7ml,摇 匀，即得。 磷酸盐缓冲液(pH6.8) 取0.2mol/L磷酸二氢钾溶液250ml,加0.2mol/L氢氧化钠溶 液118ml，用水稀释至1000ml，即得。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条