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            首頁   >>   資料下載   >>   O, N determination in titanium samples
            
		
            
	
            
        
            
        
            
	
            
				
            
					
            
						
            
						
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            O, N determination in titanium samples
            
        			
            閱讀：5734      發(fā)布時間：2015-05-15
        				
            
							
				
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        				  Suitable analyzers
            n ON 900
            n ONH 2000
            Used accessories
            n Inner graphite crucibles (90180)
            n Outer graphite crucibles (90185)
            n Nickel basket (90250) or AR 2344
            n Suitable calibration material (NIST or other)
            Settings
            n Comparator level: 20 mV
            n Minimum time: 15 sec
            n Maximum time: 3:00 min
            n Post waiting: 30 sec
            n Base line deviation: 200 mV;
            Step: 16 mV; Time: 10 sec
            n Mode: continuous
            n Outgas
            Time: 45 sec
            Power: 6 kW
            n Time
            Purge: 20 sec
            Stability: 45 sec
            n Integration delay
            IR cell: 2 sec
            TC cell: 10 sec
            n Analyse (1)
            Time: 75 sec
            Power (1): 6 kW
            Power (2): 6 kW
            Sample preparation
            Make sure that the surface of the titanium is free
            from contaminations; otherwise clean the sample with
            acetone p.a. and let dry at atmosphere.
            Procedure
            n Prepare ELTRA analyzer (exchange anhydrone,
            sodium hydroxide, copper oxide when necessary),
            clean furnace, sample drop mechanism, electrode tip
            n Run three blanks with empty crucibles
            n Calibrate the analyzer with suitable calibration
            material (NIST or other)
            (1) Fill one empty inner crucible (90180) in one outer
            crucible (90185) and place them on the electrode
            tip, close furnace (F2 Button)
            (2) Weigh calibration material and give it into a nickel
            basket (90250 or AR2344)
            (3) Place nickel basket with calibration material or sample
            in the sample drop mechanism and start analysis
            (F5 Button)
            After analysis give the inner crucible into waste and
            fill in a new one. The outer crucibles can be used
            approximay 10 times.
            Repeat steps (1) – (3) at least three times;
            Mark the results and use the calibration function in the
            software.

            
                        
            
                            
            
                                
                                    
            
                                        
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                                        弗爾德（上海）儀器設(shè)備有限公司
                                        
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