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TC-500 氧氮聯(lián)合測(cè)定儀

簡(jiǎn)要描述：簡(jiǎn)單說明：TC500系列儀器質(zhì)量、性能、工藝滿足您對(duì)金屬、難熔物、其他無機(jī)材料日常生產(chǎn)中氮/氧分析的需要

  • 產(chǎn)品型號(hào)：TC-500
  • 廠商性質(zhì)：生產(chǎn)廠家
  • 更新時(shí)間：2025-07-17
  • 訪  問  量：2786
詳情介紹

詳細(xì)說明:

TC500系列儀器質(zhì)量、性能、工藝滿足您對(duì)金屬、難熔物、其他無機(jī)材料日常生產(chǎn)中氮/氧分析的需要

Determination of Oxygen and Nitrogen in
Reactive/Refractory Metals and Their Alloys*
 
Approval
ASTM E-1409 Oxygen Determination in Titanium and Titanium Alloys
ASTM E-1569 Oxygen Determination in Tantalum
ASTM E-1937 Nitrogen Determination in Titanium and Titanium Alloys
 
Sample Preparation
A clean representative sample is required in order to obtain optimum results. Solid samples can be leached in suitable acid or abraded with a clean file, rinsed in acetone, and dried with warm air. Refer to ASTM methods above for further details.
 
Accessories
782-720 Crucible; 782-721 Electrode Tip; 502-344 UHP Nickel
Baskets; 501-073 Graphite; 503-032 Glass Accelerator Scoop;
501-059 Tin Capsules—for powdered samples. （Additional steps required for powdered samples are noted in parenthesis.）
 
Calibration Standard
LECO 501-320 Titanium Pin, 502-047 Zirconium Pin, NIST, or other suitable reactive/refractory metal standard.
 
Method Parameters
Analysis Parameters
Outgas Cycles                           2
Analysis Delay （seconds）             20
Analysis Comparator                 1
Analysis Type                              Auto
 
Element Parameters                  Oxygen           Nitrogen
Minimum Time （seconds）
35
55
Integration Delay （seconds）
5
15
Comparator Level （%）
1
1
 
Furnace Parameters
Furnace Control Mode             Power
Purge Time （seconds）                    15
Outgas Time （seconds）                20
Cool Time （seconds）                    5
Outgas Power （Watts）                 6300
Analyze Power （Watts）                5300
 
 
 
 
 


 

*This includes Ti, Zr, W, Mo, Ta, Nb, Hf, and their alloys.

 
TC500


 

 
Typical Results
 
 
 
Titanium Pin
Mass （g）
Oxygen （%）
Nitrogen （%）
 
0.1135
0.1808
0.0189
 
0.1133
0.1843
0.0194
 
0.1134
0.1831
0.0184
 
0.1138
0.1819
0.0188
 
0.1133
0.1821
0.0195
 
0.1131
0.1829
0.0185
 
0.1134
0.1833
0.0191
 
0.1143
0.1849
0.0194
 
0.1125
0.1837
0.0189
 
0.1072
0.1830
0.0191
 
Average
0.1830
0.0190
 
Std. Dev.
0.0012
0.0004
 
Zirconium Wire
 
Mass （g）
 
Oxygen （%）
 
Nitrogen （%）
 
0.1067
0.1246
0.0017
 
0.0978
0.1273
0.0017
 
0.1180
0.1246
0.0019
 
0.1097
0.1235
0.0014
 
0.1141
0.1272
0.0017
 
0.1017
0.1226
0.0018
 
0.1140
0.1269
0.0020
 
0.0987
0.1239
0.0020
 
0.1015
0.1233
0.0022
 
0.1197
0.1270
0.0020
 
Average
0.1251
0.0018
 
Std. Dev.
0.0018
0.0002
 
Procedure
 
 
 
1.   Determine the blank as follows:
a.   Enter the "blank" ID code with a 1.0000 g weight in the weight stack.
b.   Press the loader control switch, the sample loader will open.
c.   Place one 502-344 UHP Nickel basket into the loading head using clean tweezers.
（Place a 501-059 Tin capsule into the Nickel basket before placing it in the loading head.）
d.   Press the loader control switch, the sample loader will close and seal and the furnace electrode will open.
e.   Remove crucible from electrode tip and discard.  Clean furnace area using the appropriate brushes.  Vacuum away loose dust.
f.    Place ~0.05 g 501-073 into the bottom of a 782-720 crucible.  ~0.05 g is approximay a ¼ full
503-032 glass accelerator scoop.
g.   Place the crucible on the lower electrode.
h.   Press the loader control switch, the furnace electrode will close and the analysis sequence will start automatically.
i.    Repeat steps 1a through 1h at least four more times.
j.    Enter blank following routine outlined in operator's instruction manual.
2.   Calibrate the instrument as follows:
a.   Weigh the calibration sample. （Weigh the calibration sample into the tin capsule.）
b.   Enter the calibration sample ID code and sample weight in the weight stack.
c.   Place the calibration sample （capsule） into a nickel basket.
d.   Press the loader control switch, the sample loader will open.
e.   Carefully place the calibration sample/nickel basket （capsule） into the loading head using clean tweezers.  Make sure that the calibration sample （capsule） stays in the basket and the basket
stays upright.
f.    Press the loader control switch, the sample loader will close and seal and the furnace electrode will open.
continued on page 3


 

Procedure （continued from page 2）
g.   Remove crucible from electrode tip and discard.  Clean furnace area using the appropriate brushes.  Vacuum away loose dust.
h.   Place ~0.05 g graphite into the bottom of a crucible.
i.    Place the crucible on the lower electrode.
j.    Press the loader control switch, the furnace electrode will close and the analysis sequence will start automatically.
k.   Repeat steps 2a through 2j a minimum of three times.
l.    Complete a calibration by following the auto calibration procedure as outlined in the operator's instruction manual.
m.  Verify the calibration by analyzing the calibration sample again.  It should fall within the expected tolerances.  If not, repeat steps 2a through 2l again.
3.   Analyze the samples as follows:
a.   Weigh ~0.1 g sample. （Weigh the sample into the tin capsule.）
b.   Enter the sample ID code and sample weight in the weight stack.
c.   Place the sample （capsule） into a nickel basket.
d.   Press the loader control switch, the sample loader will open.
e.   Carefully place the sample/nickel basket （capsule） into the loading head using clean tweezers.
Make sure that the sample （capsule） stays in the basket and the basket stays upright.
f.    Press the loader control switch, the sample loader will close and seal and the furnace electrode will open.
g.   Remove crucible from electrode tip and discard.  Clean furnace area using the appropriate brushes.  Vacuum away loose dust.
h.   Place ~0.05 g graphite into the bottom of a crucible.
i.    Place the crucible on the lower electrode.
j.    Press the loader control switch, the furnace electrode will close and the analysis sequence will start automatically.
 
Theory of Operation
The TC500 is a microprocessor-based, software-controlled instrument that measures both nitrogen and oxygen in a wide variety of metals, refractories, and inorganic materials. The inert gas fusion principle is employed. A weighed sample, placed in a high-purity graphite crucible, is fused under a flowing helium gas stream at temperatures sufficient to release oxygen, nitrogen, and hydrogen. The oxygen in the
sample, combines with the carbon from the crucible to form carbon monoxide. The nitrogen present in
the sample releases as molecular nitrogen, and any hydrogen present is released as hydrogen gas. The helium carries the sample gases through heated rare earth copper oxide which converts carbon
monoxide to carbon dioxide （CO2） and hydrogen to water （H2O）. The nitrogen passes through
unchanged. The gases are then passed through a CO2  infrared （IR） cell where the oxygen is measured as
CO2. CO2  and H2O are then removed by a Lecosorb/Anhydrone trap, while the nitrogen passes through
to a thermal conductivity （TC） cell for determination.


 

TC500 Flow Diagram
 
 
 
 
 

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