Sample Preparation

Typically, titanium and zirconium samples are chemically etched to remove surface contamination when oxygen and nitrogen are determined. However, etching can introduce hydrogen into the sample.

ASTM method E 1409 "Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by the Inert

Gas Fusion Technique", as updated in 1996, permits either etching or abrading (filing) of the test specimen.

ASTM E 1447 "Determination of Hydrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Thermal

Conductivity/Infrared Detection Method" permits surface preparation by abrading (if necessary to remove

contamination). Differences in sample preparation present somewhat of a dilemma regarding simultaneous

determination of O, N, and H in titanium. However, abrading samples with a file to remove surface

contamination will yield accurate O, N, and H results. The ONH836 utilizes a high-power electrode furnace to quickly and efficiently release the target gases from within the sample, which allows for a very rapid simultaneous determination of oxygen, nitrogen, and hydrogen.

Procedure - Solid Samples

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 manually, or, if applicable, remove the crucible and press the analyze button to clean with the automatic cleaner

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

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.

ONH836系列：氧氮氫分析儀（熔融法）

力可ONH836系列儀器采用惰性熔融法，提供各種無機材料、鋼鐵、有色金屬、硬質合金、陶瓷材料中寬范圍的氧氮氫同時分析。

ONH836系列儀器通過***采納客戶的反饋意見和創新設計，力可***儀器采用觸摸屏技術和在線軟件平臺，增強了儀器的可操作性、降低了分析成本、節省實驗室桌面空間。

用戶友好界面的Cornerstone? 軟件

力可**的Cornerstone 氧氮氧分析軟件采用觸摸屏界面使用戶可完整的達到分析控制、方法設定、在線診斷、數據報告。Cornerstone  氧氮氧分析軟件允許用戶在單一分析界面中完成日常的所有工作，快速而且簡單易用。力可創新的批次和重復樣品數據分組功能極大簡化了樣品結果輸出和結果標準偏差的自動計算，減少了繁瑣的額外數據處理。

穩固的爐頭試樣加載結構。

Summary

The determination of the amount of oxygen, nitrogen, and hydrogen in iron, steel, nickel-, and cobalt-base alloys represents some of the most important quality metrics for these materials. Oxygen is used to create steel from pig iron by removing excess carbon. Oxygen content must be controlled to limit the amount of carbon monoxide that can be formed during solidification which may cause excessive porosity. Nitrogen is considered both an impurity as well as an important alloying agent. Itcan be present as a nitride or interstitially in its gaseous form. Increased nitrogen content is known to increase yield and tensile strength, thus decreasing ductility and formability. Excessive levels may evolve during solidification thus increasing porosity. High hydrogen content is the primary cause of embrittlement, blistering and flaking due to its high

mobility through the lattice and provides no potential alloying benefits. The ONH836 utilizes a high-power

electrode furnace to quickly and efficiently release the target gases from within the sample, which allows

for a very rapid simultaneous determination of oxygen, nitrogen, and hydrogen.

長壽命的紅外發射光源和無漂移的電路設計保證檢測器的長期穩定性。上海專業元素分析儀價格

提供各種無機材料、鋼鐵、有色金屬、硬質合金陶瓷材料中寬范圍的氧氮氫同時測定。山東氧氮氫分析儀多少錢

氧氮氫分析儀的常見故障及解決方法

供電正常、通訊正常，點擊確認鍵后分析儀不工作。這是沒有水流，爐子溫度太高或儀器通道電壓不正常。如沒有水流，爐子溫度太高這些信息會顯示在顯示器畫面上，但沒有信息顯示說明這兩項正常。接下來檢查儀器通道零位電壓，如果比±3V高出1V以上，可能是因為氣瓶空了，或者是空氣進入到分析儀中。檢查并更換化學試劑，如果有空氣進入熱導池里，熱導池的電壓就會＜-6V，此時打開右面的門，堵住爐子氣體進口，10s后，熱導池電壓值必然升高。經過逐一排查，**終確認堿石棉有問題，更換后儀器正常。 山東氧氮氫分析儀多少錢