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?dú)浞治鰞x（熔融法）

力可ONH836系列儀器采用惰性熔融法，提供各種無(wú)機(jī)材料、鋼鐵、有色金屬、硬質(zhì)合金、陶瓷材料中寬范圍的氧氮?dú)渫瑫r(shí)分析。

ONH836系列儀器通過(guò)***采納客戶的反饋意見(jiàn)和創(chuàng)新設(shè)計(jì)，力可***儀器采用觸摸屏技術(shù)和在線軟件平臺(tái)，增強(qiáng)了儀器的可操作性、降低了分析成本、節(jié)省實(shí)驗(yàn)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(dá)到分析控制、方法設(shè)定、在線診斷、數(shù)據(jù)報(bào)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(jiǎn)單易用。力可創(chuàng)新的批次和重復(fù)樣品數(shù)據(jù)分組功能極大簡(jiǎn)化了樣品結(jié)果輸出和結(jié)果標(biāo)準(zhǔn)偏差的自動(dòng)計(jì)算，減少了繁瑣的額外數(shù)據(jù)處理。

穩(wěn)固的爐頭試樣加載結(jié)構(gòu)。

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(zhǎng)壽命的紅外發(fā)射光源和無(wú)漂移的電路設(shè)計(jì)保證檢測(cè)器的長(zhǎng)期穩(wěn)定性。上海專業(yè)元素分析儀價(jià)格

提供各種無(wú)機(jī)材料、鋼鐵、有色金屬、硬質(zhì)合金陶瓷材料中寬范圍的氧氮?dú)渫瑫r(shí)測(cè)定。山東氧氮?dú)浞治鰞x多少錢

氧氮?dú)浞治鰞x的常見(jiàn)故障及解決方法

供電正常、通訊正常，點(diǎn)擊確認(rèn)鍵后分析儀不工作。這是沒(méi)有水流，爐子溫度太高或儀器通道電壓不正常。如沒(méi)有水流，爐子溫度太高這些信息會(huì)顯示在顯示器畫面上，但沒(méi)有信息顯示說(shuō)明這兩項(xiàng)正常。接下來(lái)檢查儀器通道零位電壓，如果比±3V高出1V以上，可能是因?yàn)闅馄靠樟?，或者是空氣進(jìn)入到分析儀中。檢查并更換化學(xué)試劑，如果有空氣進(jìn)入熱導(dǎo)池里，熱導(dǎo)池的電壓就會(huì)＜-6V，此時(shí)打開(kāi)右面的門，堵住爐子氣體進(jìn)口，10s后，熱導(dǎo)池電壓值必然升高。經(jīng)過(guò)逐一排查，**終確認(rèn)堿石棉有問(wèn)題，更換后儀器正常。 山東氧氮?dú)浞治鰞x多少錢