蓝色系列炉的快速冷却模式

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-01-29 DOI:10.3233/jnr-190128

C. Goodway, P. Mcintyre, A. Sears, Nadir Belkhier, G. Burgess, O. Kirichek, E. Lelièvre-Berna, F. Marchal, Sébastien Turc, S. Wakefield

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引用次数: 0

摘要

蓝色系列顶载炉通常用于中子设施，以进行高达1700◦C的实验。使用间接电阻加热方法控制样品温度，该方法包括将样品放入由钒或铌制成的辐射圆柱形加热器中，其中高达180 a的电流循环。为了防止被加热元件的氧化和变质，样品、加热器和隔热罩处于二级真空中，这极大地限制了冷却速度。我们提出了一种自动快速冷却技术，该技术将冷却时间减少了4到5倍，而不会影响被加热元件的寿命。这种方法现在在ILL和ISIS设施中经常使用，并大大减少了波束时间损失。

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A fast-cooling mode for blue series furnaces

Blue series top-loading furnaces are regularly used at neutron facilities to carry out experiments at up to 1700◦C. The sample temperature is controlled using the indirect resistance heating method which consists in placing the sample inside a radiating cylindrical heater made from vanadium or niobium into which a current of up to 180 A circulates. To prevent the oxydation and deterioration of the heated elements, the sample, the heater and the heat shields are in a secondary vacuum which limits very much the cooling rate. We present an automated fast-cooling technique which reduces the cool-down time by a factor of 4 to 5 without impacting the lifetime of the heated elements. This method is now routinely used at the ILL and ISIS facilities and reduces very much beam time losses.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.