Procedure - Solid Samples：

--Instrument calibration/drift correction.

Place the nickel basket containing the calibration/drift standard 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 manually, or, if applicable, remove the crucible and press the analyze button to clean with the automatic cleaner.

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.

美國分析儀裝有自動旁路閥的可快速拆裝氧水捕集裝置。

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 – Powder/Chip Samples

Determine the instrument blank.

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

Repeat steps 2b through 2g a minimum of three times.

Set the blank following the procedure outlined in the operator's instruction manual.

Instrument calibration/drift correction.

Login a minimum of three Standard reps.

Weigh approximately *** grams of a calibration/drift standard into a *** Nickel Capsule; enter the mass and standard identification into appropriate rep fields. If applicable, place the nickel capsule in the appropriate autoloader position.

采用三個**的紅外器檢測氧含量，同時檢測CO和CO2，然后在轉化為CO2集中檢測。

氧氮氫分析儀

氧氮氫分析儀是一種用于材料科學領域的儀器，于2016年03月09日啟用。

技術指標

測量范圍： ON 低氧0.0－300ppm OH 低氧0.0－300ppm 高氧0.0－2% 高氧0.0－2% 低氮0.0―300ppm 低氫0.0－50ppm 高氮0.0－2% 高氫0.0－1000ppm 靈敏度： 氧0.01ppm；氮0.1ppm；氫0.01ppm。

主要功能

該儀器配置有16位微處理器和兩個**的分別檢測高氧和低氧的 紅外檢測池。氮和氫通過雙重范圍的熱導檢測池測量。分析過程中可自動實現(xiàn)從 低范圍到高范圍的切換。樣品在高功率脈沖爐的石墨坩堝中加熱可達3000℃以上 高溫，脈沖爐采用循環(huán)水冷卻。該儀器具有靈敏度高、性能好、測量范圍寬和分 析結果準確可靠等優(yōu)點。ONH-2000氧氮氫分析儀是為快速、準確測定銅、鋼、鑄 鐵、合金、鈦、鎳、鉬、鋯、陶瓷和其它無機材料中氧、氮、氫的含量而專門設計 制造的。 無需人工干預的全自動清掃系統(tǒng)。廣東專業(yè)分析儀廠家報價

穩(wěn)固的爐頭試樣加載結構。廣東專業(yè)分析儀廠家報價

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.