Oxygen, Nitrogen, and Hydrogen in Refractory Metals
Summary
Titanium is a metal that can be combined with elements such as aluminum, vanadium, molybdenum, and tin to produce high-strength, lowdensity, and corrosion-resistant alloys. Titanium alloys are used by the military, medical devices, sporting goods, and aerospace industries because of these properties, and due to the strict demands of these industries, effort needs to be taken to assure that the material meets the highest of quality standards.
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Sample Preparation
Sampling and sample preparation of refractory metals such as titanium and zirconium is somewhat different from that of steel. Unlike steel samples, hydrogen is not as mobile in this group of materials; therefore, storage in liquid nitrogen or dry ice is not required. However, it is important to keep the sample cool when cutting or sectioning. Sample preparation for oxygen and nitrogen determination has beendifferent from that of hydrogen determination.
湖南LECO氧氮氢分析仪咨询报价新型气路管道减少气路连接阀，使得漏气，断路故障更少。
Procedure – Powder/Chip Samples
Instrument calibration/drift correction.
Calibrate/drift following the procedure outlined in the operator's instruction manual.
Login Sample with the appropriate number of reps.
Weigh approximately *** grams of appropriately prepared sample into a *** Nickel Capsule, enter mass and sample identification into appropriate rep fields. If applicable, place the nickel capsule in the
appropriate autoloader position.
Repeat steps 3c through 3i for sample analysis.
Procedure – Powder/Chip Samples
Instrument calibration/drift correction.
Press the Analyze button on the instrument screen. After a short delay, the loading head slide-block will open.
Place the Nickel Capsule containing the sample into the open port at the top of the loading head.
Press the Analyze button on the instrument screen again, the loading head slide-block will close and the lower electrode will open.
Clean the upper and lower electrode either manually or remove the crucible and press the analyze button to clean with an automatic cleaner if applicable.
Instrument Highlights and Features
Optional Features
Optional boom-mounted touch-screen interface package (M) promotes an ergonomic workspace
Optional Performance Package (P) adds a three-stage carrier gas purification system, and a dual-loop gas dose module
Optional Dual Cooling Package (D) adds an integratedliquid-to-air radiator with dual cooling fans. This DC
option gives the user the choice of liquid-to-liquid cooling, liquid-to-air cooling, or a combination of both
Optional integrated autocleaner (H) automatically cleans the upper electrode and lower electrode tip
Optional 20-sample shuttle loader available
试样加载过程中完全密闭，消除大气的中可能带来的杂质的污染。山东进口分析仪厂家直销
可选具有压力补偿和温度控制性能的标气检测气路。江苏美国分析仪厂家供应
Determine the instrument blank.
a. Login a minimum of 3 Blank replicates.
b. Press the Analyze button on the instrument screen. After a short delay, the loading head slide-block will open.
c. Press the Analyze button on the instrument screen again, the loading head slide-block will close and the lower electrode will open.
d. Clean the upper and lower electrode manually, or, if applicable, remove thecrucible and press the analyze button to clean with the automatic cleaner.
e. Firmly place a graphite crucible on the lower electrode tip.
f. Press the Analyze button on the instrument screen, the lower electrode will close and the analysis sequence will start and endautomatically.
g. Repeat steps 2b through 2f a minimum of three times.
h. Set the blank following the procedure outlined in the operator's instruction manual.
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