This standard specifies the method for the determination of the amounts of nickel, zinc and indium in silver tin oxide indium oxide electrical contact materials. This standard is applicable to the determination of nickel, zinc and indium content in silver tin oxide indium oxide electrical contact materials. The measurement range is shown in Table 1.
JB/T 7777.5-1995 history
2008JB/T 7777.5-2008 Test methods for chemical analysis of silver-tin oxide-indium oxide electric contact material.Part 5:Determination of nickel,zinc and indium contents
1995JB/T 7777.5-1995 Silver tin oxide indium oxide electrical contact material chemical analysis method flame atomic absorption spectrometry Determination of nickel, zinc and indium content