Meaning
Quantitative test methodology determines the concentration of trace oxygen within metallic and ceramic materials by melting the sample in a graphite crucible. Using oxygen fusion analysis provides material scientists with precise data on the level of oxide contaminants present in raw powders. This measurement is complete once the evolved carbon monoxide is measured by an infrared detector.
Analytical Method
Heating the sample occurs under a flow of high-purity inert gas to prevent atmospheric contamination. The carbon in the crucible reacts with oxygen to generate carbon monoxide gas.
Powder Quality
Manufacturing specifications for metal powders used in additive manufacturing or battery electrodes require very low oxygen levels. When using oxygen fusion analysis, quality control teams can identify batches that have begun to oxidize during storage. These oxidized batches are rejected because they produce weak weld joints and poor electrochemical performance.
Battery Performance
High oxygen content in silicon or carbon anode powders increases first-cycle capacity loss. Procurement departments use this analytical technique to audit suppliers and ensure that the incoming materials meet strict purity limits. Consistently low oxygen levels lead to batteries with higher round-trip efficiency and longer cycle life.
This verification step prevents expensive production failures and material wastage.
