A pulse heating inert gas melting infrared absorption and thermal conductivity method was established using an oxygen nitrogen hydrogen analyzer to determine the oxygen and nitrogen content in metal chrome.A high-grade pure graphite crucible was used,and a high-purity no-clean nickel basket was used as a flux.The optimal measurement conditions were selected(analysis power of 5 000 W,degassing power of 5 500 W,shortest time for oxygen analysis of 40 s,and shortest time for nitrogen analysis of 65 s).Through this method,the precision,accuracy,and recovery rate of flux blank experiments and sample measurements were tested,proving that the method can quickly and accurately determine the oxygen and nitrogen content in metal chrome,and providing an effective approach for the detection of oxygen and nitrogen content in metal chrome.
关键词
脉冲加热惰性气体熔融法/金属铬/氧氮含量/测定
Key words
pulse heating inert gas melting method/metal chrome/oxygen and nitrogen content/determination
维普
万方数据