端子镀金层硝酸气试验方法试题.doc

硝酸蒸汽测试方法 Test method试验方法 The nitric acid used in this test is a strong acid and special caution should be taken. Read Material Safety Data Sheet before starting the test. The test is done in a fume hood. Suitable protective cloths, gloves and eye protection must be used. During the whole test process, particular caution is required for contact areas in sample handling, avoiding any touching/scratching by hands and tools. 用在项硝酸是一种强酸性。阅读。 这项在一个。必须防护衣服手套保护眼睛。 在整个过程中，尤其要注意样品处理接触，避免划伤。 Test Equipment and Chemicals 试验设备/药品 Below is a list of equipment needed to perform the test: 清单 2 x vacuum desiccators with ground joint and tap e.g. Model Novus, Schott NS24/ id. 250 mm 2个带磨口连接和活栓的干燥器 Dessiccant, Blue Silica Gel 干的/蓝硅胶 Sample holder made of inert material e.g. PTFE / Teflon Nitric acid, reagent grade, concentrated 69±2% HNO3, relative density 20°C 1.39 to 1.42 硝酸,试剂等级,浓缩 69±2% HNO3,相对密度 20°C 1.39 to 1.42 g/cm3. Read Material Safety Data Sheet before starting the test! 试验前阅读MSDS Density hydrometer e.g. Widder, scale 1.00- 1.50 密度液体比重计 如,方,刻度1.00- 1.50 Graduated glass cylinder 500 ml 有刻度的玻璃杯 圆柱形 500 ml Glass funnel 玻璃漏斗 Timer alarm clock 计时器 闹钟 Oven for drying the tested samples 烘箱 Microscope for analyzing samples显微镜 Optical microscopes Stereo/metallurgical microscope 光学显微镜 SEM, Scanning electron microscope 标准电子块,扫描电子显微镜 Protective Gloves e.g. nitrile-base 保护手套 Safety goggles 防护眼镜 NaHCO3 to neutralization splashes form table or floor in case of accident . For skin use tap water to dilute acid splashes. 若发生事故 用NaHCO3 中和台面和地面的喷着点,若滴落皮肤上,用自来水稀释酸的喷着点 NaHCO3, Fume hood 通风橱 Test setup Figure 1. Graduated glass cylinder, nitric acid bottle and test chamber in the fume hood. 图一,带刻度的玻璃杯,硝酸瓶,通风橱控制下的试验区 The following procedure is performed in a fume hood. The test is done in the fume hood. Measure 500 ml Nitic acid with the glass cylinder and pour it carefully into the empty and clean dessicator. Close the lid and let the test vessel stabilitze for