National Bureau of Standards Miscellaneous PublicationU.S. Government Printing Office, 1964 |
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Results 1-5 of 55
Page 4
... homogeneity of chemical composition . ( 3 ) Investi- gation had shown that test samples with an induced white structure could be prepared in the foundry for most types of iron ; these could thus be analyzed directly relative to 4.
... homogeneity of chemical composition . ( 3 ) Investi- gation had shown that test samples with an induced white structure could be prepared in the foundry for most types of iron ; these could thus be analyzed directly relative to 4.
Page 5
iron ; these could thus be analyzed directly relative to the white iron standards . The white structure can be induced in at least a portion of the test samples either by using a rapid chill - casting procedure or by making certain ...
iron ; these could thus be analyzed directly relative to the white iron standards . The white structure can be induced in at least a portion of the test samples either by using a rapid chill - casting procedure or by making certain ...
Page 29
... relative to the NBS wrought standards are not biased because of differing fabrication techniques or heat treatment . When the copper content of an alloy is high , 90 percent or more , the heat conductivity , and hence the volatility ...
... relative to the NBS wrought standards are not biased because of differing fabrication techniques or heat treatment . When the copper content of an alloy is high , 90 percent or more , the heat conductivity , and hence the volatility ...
Page 17
... relative position for both sample and synthetic standards . The same acids must be used to prepare the synthetics as were used to dissolve the samples and the final acid concentra- tion should be the same for both standard and samples ...
... relative position for both sample and synthetic standards . The same acids must be used to prepare the synthetics as were used to dissolve the samples and the final acid concentra- tion should be the same for both standard and samples ...
Page 5
... relative standard deviation is 0.02 percent . Principle of Method The sample is burned in a stream of oxygen , and the carbon dioxide in the evolved gases is collected in a suitable absorbent and weighed . Interferences Oxides of sulfur ...
... relative standard deviation is 0.02 percent . Principle of Method The sample is burned in a stream of oxygen , and the carbon dioxide in the evolved gases is collected in a suitable absorbent and weighed . Interferences Oxides of sulfur ...
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Common terms and phrases
acid solution add 10 ml aliquot alloy ammonium Analytical Analytical curve assay average beaker boil Bureau of Standards butyl acetate calibration carbon Cartridge Brass cents chemical shift chill-cast chromium composition Cool copper Copper-Base Spectrochemical Standards COPPER-BASE STANDARDS determination dilute Dissolve electrolyte electron probe electron probe microanalysis elements Erlenmeyer flask ferrite Figure filter free-cutting brass fumes glass grain heat homogeneity inclusions Institute for Materials Laboratory Low-Alloy Steel manganese Materials Research mean free path measurement metal method microns ml of H2SO4 ml of HNO3 ml of water Mossbauer National Bureau NBS Misc NBS Miscellaneous Publication NBS Spectrometric nickel nitric acid obtained oxide paper pearlite percent photometric precipitate procedure Publ Reagents sodium sodium nitroprusside spectrometer standard deviation Standard Reference Materials sulfate sulfuric acid Technology titration Transfer uranium Vacuum fusion values vanadium viscosity volumetric flask wash weight white cast iron x-ray zinc