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Hitachi High-Tech Analytical Science is a leading supplier of handheld laser-induced breakdown spectroscopy (LIBS) technology. Recently, the company was asked whether optical emission spectroscopy (OES) will be replaced by LIBS in the near future.
While LIBS is a relatively new analytical technology that shows immense potential, it is still not ready to replace OES for accurate material identification requirements. Hitachi High-Tech’s Product Manager Mikko Jarvikivi explains why there is a place for both types of technologies.
One major benefit for companies across various industries was the advent of portable instruments — instruments that can accurately inspect the materials’ chemical composition. The right portable analyzer will allow users to perform positive material identification (PMI), material sorting, and control or quality assurance tasks in a fast and efficient way.
日立高科技的瓦肯是基于LIBS的手持分析仪，可提供快速和低成本的解决方案。当用户需要执行PMI测试或分类合金时，Libs Instruments可以通过铝和不锈钢金属提供出色的性能，并通过低合金钢和钛提供良好的性能。Vulcan坚固耐用，在样本上留下较小的标记，只需要最少的用户培训，并且拥有较低的拥有成本。
近年来，使用LIBS技术已经取得了广泛的发展。但是，尽管这一事实，OES分析仪仍具有100％准确性的检测的较低限制，这确实是以可靠的方式分离L级不锈钢所必需的。
两种类型的技术都有一个位置，他们的选择将取决于手头的任务。
Analyzing Steels
在某些合金中，影响金属的硬度，强度，熔点和可行性的元素远低于100 ppm的水平。在这些低水平上，基于激光的分析仪无法提供准确的读数。在大多数情况下，包括基于OES的分析仪在内的Hitachi High-Tech的PMI-MASTER在内，事实证明是一个更好，可靠的选择。
Carbon
当必须将L级与不锈钢中的高级分离时，碳发挥了重要作用。该元素对于钢和铁等级也很重要，可以使无金和低钢的分离。多年来，固定和移动OE一直是这些应用程序的流行且建立了良好的技术。
尽管重点是估计钢中的碳含量，但必须记住，碳不是钢中感兴趣的唯一要素。铬，镍，钛，硅和锰含量的测量都可以用OES分析仪来实现，在必须准确确定碳当量的情况下。另一方面，LIBS设备无法测量磷和硫。如果存在具有高熔点和硬度的耐火元素，包括Hafnium，Tungsten，Tantalum，Niobium和molybdenum，许多现有的LIBS分析仪将很难准确地测量它们。
Duplex Steels
在复式钢的快速生长区域中，通过氮含量快速，轻松地识别和分离双链体等级是一个重要的应用。
Other Important Trace Elements
同时，对低硼浓度的兴趣越来越高 - 低于5 ppm。作为合金元素，硼通过热处理增强了钢合金的坚固性和硬度。它在工具，构造和螺钉等物体中特别有用。
However, boron is not favored in unalloyed steels as it is known to have a negative effect on welding properties. A limit of just 0.0008 ppm is enough to classify boron as alloyed steel. Many customs offices across the globe need to check the incoming imported steel for this very low limit.
As with an array of all technical related elements including carbon, OES analyzers offer more reliable results and better accuracy for boron, nitrogen, and other relevant trace and main elements.
A Trusted Method
Handheld LIBS devices are smaller, faster, and less expensive, but the development of the inbuilt technology is still ongoing. OES has been around for many years and is a reliable means for obtaining accurate readings even in the case of very low levels of detection. The bottom line is: can one afford to get small shifts in the amount of elements, including carbon, wrong?
这fact is that even extremely small shifts in the amount of elements, including carbon, in a sample will impact the strength and brittleness of the material and how it is worked with respect to tools, methods, and temperatures. If a wrongly graded alloy ends up in a machine, part, or tool that eventually fails, it could lead to expensive product recalls, catastrophic accidents, loss of reputation, and lawsuits. However, precision and repeatability can be ensured with OES.
日立高科技已有四十多年来一直在支持广泛的行业。该公司非常意识到，一系列不同的技术必须共存，以为用户提供最佳的分析和应用程序要求解决方案。这就是Hitachi的专家在建议最合适的产品之前了解客户需求的原因。
这基于LIBS的Vulcan手持分析仪is a perfect tool for aluminum and stainless steel sorting, and for certain PMI quality control tasks. The X-MET8000 series of handheld XRF analyzers leads the market for rapid and non-destructive analysis. In order to accurately find out the chemical composition of a complete range of alloys, the OES range of mobile and stationary analyzers delivers excellent performance.
有关更多详细信息，客户可以联系日立高科技分析科学以预订演示。亚博老虎机网登录
This information has been sourced, reviewed and adapted from materials provided by Hitachi High-Tech Analytical Science.
有关此消息来源的更多信息，请访问日立高科技分析科学。亚博老虎机网登录