端子鍍金層硝酸氣試驗(yàn)方法-預(yù)覽頁(yè)
【正文】 tric acid is checked and added up to 500 ml if need. Density of acid must check using density hydrometer.After every three months the whole test solution must be change. Disposals of HNO3 waste need to be done according to local legal instructions.The test solution must be changed immediately if any of the samples falls into the acid.The test solution must be changed immediately if any visual color change of the acid solution occurs.試驗(yàn)的將樣品固定器從試驗(yàn)器皿中移出來(lái),水洗干凈。需要注意的是,要將蓋子關(guān)閉三十分鐘后，才可開始一項(xiàng)新的實(shí)驗(yàn)。 每 3 個(gè)月，試驗(yàn)用的溶液必須更換。 4. PROCESS Sample preparation 準(zhǔn)備樣品The type of sample needs to be taken into account when the samples are prepared for the test. The surfaces objected to the tests need to be undamaged and untouched. The samples need to be fixed in the test vessel. One option is to hang the samples using acid proof material like PTFE. One easy solution is to connect two connectors by solderin a short wire (510 cm) between two legs.Wet cleaning is not remended since it will affect the test results. External solid depositions on contact surface can be removed by pressed air. 準(zhǔn)備試驗(yàn)時(shí),必須考慮到樣品類型滿足試驗(yàn)需要。一個(gè)簡(jiǎn)單的辦法是通過(guò)焊焊接的方式將兩個(gè)連接器樣品之間的兩條腿用一條小金屬線（ 510 厘米）連接上。 Test chamber preparation 試驗(yàn)區(qū)準(zhǔn)備Use a clean and pletely dry vacuum dessicator. Keep the dessicator in the fume hood. Measure 500 ml fresh HNO3 in a graduated glass cylinder and poor it carefully into the vacuum dessicator. Close the lid and let the test chamber stabilize for at least 30 min.使用清潔和完全干燥的真空干燥器 。根據(jù)厚度的鍍層做兩個(gè)試驗(yàn)。 Analysis of the samples 樣品分析Analyse the tested samples after they have cooled down to room temperature. For the analysis, optical microscopes (stereo/metallurgic microscope) or scanning electron microscope can be used. Save the microscope images and pare them with the graphic gauges in Section and Appendix III, and mark the score for each contact in the records.將試驗(yàn)的樣品冷卻至室溫后進(jìn)行分析。 date 制作地點(diǎn)和時(shí)間? Test information 試驗(yàn)信息o Sample amount 樣品數(shù)量o Test time 試驗(yàn)時(shí)間o Condition of nitric acid 硝酸條件? Analysis information 分析信息o Microscope used 使用顯微鏡o Test score 試驗(yàn)記錄? Images of the tested samples 試驗(yàn)圖片? Records for all tested contacts (number of contacts for each score) 每個(gè)接觸點(diǎn)的記錄? Possible actions 措
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