G4 Phoenix DH

Accurate and rapid diffusible hydrogen measurements allow you to avoid embrittlement, hydrogen-induced cracking and other costly failures.

Hydrogen-induced damage is a wide-spread and dreaded phenomenon. During welding, hydrogen is generated from the dissociation of water vapor (e.g. humidity) or hydrocarbons in the welding arc, and the molten metal can rapidly pick up hydrogen. Once in the metal, hydrogen atoms can diffuse swiftly inside the microstructure of the metal. Diffusible hydrogen causes hydrogen induced cracking (also known as cold or delayed cracking), where components fail under the influence of mechanical stress - suddenly and without prior indication. Thus, diffusible hydrogen is critical to assess because of embrittlement, hydrogen induced or assisted cracking (HIC/HAC) or hydrogen delayed fracture among other damaging effects.

G4 Phoenix DH，利用载气萃取液，以快速自动确定各种矩阵中的扩散氢。

关键好处：

• High-end, long term stable thermal conductivity detector (TCD) with dedicated reference gas channel, heat exchanger and ng/g analysis capabilities
• 独特的红外（IR）炉具有低热质量，可用于准确的温度控制，可编程快速加热（和冷却）最多900°C接受大型样品
• Optional thermocouple kit for direct sample temperature readings
• Additional resistance heated furnace for higher temperatures up to 1100 °C as option
• 在整个测量范围内通过氢或氦气校准的自动且可靠的气体校准，该集成气体给药单元具有10个不同的体积
• Optional interface to external sampling canisters to cover the GC method of ISO 3690
• 具有四极质谱仪的G4 Phoenix MS将检测极限提高了一个以上的数量级，从而评估了超低扩散氢浓度或同位素的评估，并研究了钢铁中不同氢陷阱的研究