Oxygen, Nitrogen, and Hydrogen in Refractory Metals

Summary

Oxygen and nitrogen are alloying elements in titanium, and are also classified as alpha stabilizing elements as they promote alpha phase alloys. Interstitial oxygen and nitrogen levels can be used to regulate the tensile strength of the material, but due to its high solubility can cause unwanted surface embrittlement. This phenomenon can be leveraged,however, under controlled processing to create surface films that increase surface hardness and wear properties.

Procedure – Powder/Chip Samples

Determine the instrument blank.

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.

Add approximately 0.05 g of *** Graphite Powder to a 782-720 Graphite Crucible.

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

Instrument calibration/drift correction.

a. Login a minimum of 3 Standard replicates.

b. Weigh a ~1.000 gram of a calibration/drift standard, enter the mass and standard identification into appropriate replicate fields.

c. Press the Analyze button on the instrument screen. After a short delay, the loading head slide-block will open.

d. Place the calibration/drift standard into the open port at the top of the loading head.

e. Press the Analyze button on the instrument screen again, the loading head slide-block will close and the lower electrode will open.

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.

減少了繁瑣的額外數(shù)據(jù)處理。

736 Series: Oxygen/Nitrogen by Inert Gas Fusion

The 736 family of Elemental Analyzers is designed for routine measurement of oxygen and nitrogen content of

inorganic materials, ferrous and nonferrous alloys, andrefractory materials using the inert gas fusion technique.

These instruments feature our Cornerstone brand ® software, a custom interface designed specifically for

touch-screen operation. Developed by combining longterm research with customer feedback, this easy-to-use

software gives you complete access to instrument control, analysis settings, diagnostics, reporting, and more—without sacrificing valuable bench space.

改進的紅外檢測池技術(shù)。上海美國LECO分析儀廠家供應(yīng)

***紅外池的恒溫絕熱技術(shù)消除了外界環(huán)境溫度的干擾。湖南專業(yè)元素分析儀優(yōu)惠價格

由于在重大工程、工業(yè)裝備和質(zhì)量保證、基礎(chǔ)科研中，儀器儀表都是必不可少的基礎(chǔ)技術(shù)和裝備重點，除傳統(tǒng)領(lǐng)域的需求外，新興的智能制造、離散自動化、生命科學、新能源、海洋工程、軌道交通等領(lǐng)域也會產(chǎn)生巨大需求。隨著互聯(lián)網(wǎng)的逐步發(fā)展，為光譜儀，色譜儀，質(zhì)譜儀，樣品前處理等產(chǎn)品的傳播提供了一個飛速的平臺。讓儀器儀表行業(yè)從傳統(tǒng)的銷售模式到以互聯(lián)網(wǎng)電子商務(wù)為主的營銷方式的轉(zhuǎn)變，促進了儀器儀表行業(yè)與互聯(lián)網(wǎng)的結(jié)合，推動產(chǎn)業(yè)創(chuàng)新發(fā)展。中國儀器儀表行業(yè)目前正處于高速發(fā)展階段，需要與之相適應(yīng)的從事儀器科技、醫(yī)療科技、檢測科技領(lǐng)域內(nèi)的技術(shù)咨詢、技術(shù)服務(wù)，儀器儀表的修理，儀器儀表、實驗室設(shè)備、機械設(shè)備及配件、機電設(shè)備及配件、電子產(chǎn)品、化工產(chǎn)品及原料（除危險化學品、監(jiān)控化學品、煙花爆竹、民用易爆物品、易制毒化學品）、第二類醫(yī)療器械的銷售，機械設(shè)備租賃，電子商務(wù)，貨物進出口，技術(shù)進出口。產(chǎn)品營銷模式相互配合。從貿(mào)易廣義角度來說，儀器儀表也可具有自動操控、報警、信號傳遞和數(shù)據(jù)處理等功能，例如用于工業(yè)生產(chǎn)過程自動操控中的氣動調(diào)節(jié)儀表，和電動調(diào)節(jié)儀表，以及集散型儀表操控系統(tǒng)也皆屬于儀器儀表。湖南專業(yè)元素分析儀優(yōu)惠價格