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Oxygen, Nitrogen, and Hydrogen in Refractory Metals

Summary

One of the most critical chemical specifications of titanium alloys is the hydrogen content. Too high of a

hydrogen content can cause hydrides to precipitate, which can lead to embrittlement and subsequent

cracking when the alloy is stressed. Hydrogen pickup typically occurs during downstream processing steps

such as heat treating, pickling, and cleaning.

The LECO ONH836 is a simultaneous oxygen, nitrogen, and hydrogen determinator that utilizes an electrode furnace, inert carrier gas, and both infrared and thermal conductivity detection to meet the analytical needs of the refractory metal industry. 

This application note was written specifically for use with the LECO ONH836 series determinator.

Procedure - Solid Samples

Instrument calibration/drift correction.

Add approximately 0.05 g of *** Graphite Powder to a *** Graphite Crucible.

Firmly place the crucible on the lower electrode tip or appropriate autoloader position.

Press the Analyze button on the instrument screen, the lower electrode will close and the analysis sequence will start and end automatically.

Repeat steps 3b through 3j a minimum of three times for each calibration/drift standard used.

Calibrate/drift following the procedure outlined in the operator's instruction manual.

Procedure – Powder/Chip Samples

Instrument calibration/drift correction.

Add approximately 0.05 g of *** Graphite Powder to a***Graphite Crucible.

Firmly place the crucible on the lower electrode tip or appropriate autoloader position.

Press the Analyze button on the instrument screen,the lower electrode will close and the analysis sequence will start and end automatically.

Repeat steps 3b through 3i a minimum of three times for each calibration/drift standard used.

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.

力可创新的批次和重复样品数据分组功能极大简化了样品结果输出和结果标准偏差的自动计算。

ONH836氧氮氢分析仪

高频燃烧红外检测技分析无机材料中的碳、硫含量。

采用惰性气体保护熔融法，提供各种无机材料、钢铁、有色金属、硬质合金、难熔金属、陶瓷等材料中宽范围的氧氮氢同时分析。

该仪器配置MS Windows®的软件接口，专为触摸屏操作定制。长期的开发研究与客户反馈相结合，这个简单方便的软件使得用户可以快速完整访问仪器控制，分析设置，故障诊断，数据报告， **提高日常分析的效率并节省用户宝贵的时间。 可选的Cornerstone® Mobile软件功能，使得用户可以在手机，便携式电脑及台式电脑上便捷的访问仪器数据，分析曲线图形以及仪器的状态，实现对仪器的遥控。

Cornerstone氧氮氧分析软件允许用户在单一分析界面中完成日常的所有工作，快速而且简单易用。新疆LECO分析仪优惠价格

全自动分析系统（可选） 。山西美国LECO分析仪优惠价格

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

山西美国LECO分析仪优惠价格

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