ZrC-C包晶固定点研制及评价

doi:10.3969/j.issn.1000-1158.2022.01.06

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摘要 ZrC-C包晶固定点因其极高的名义相变温度2882℃,超出了绝大多数高温加热炉的使用上限。通过改进自行设计的HT271型加热炉,使其工作温度上限提高到2900℃以上,满足了ZrC-C包晶固定点的使用要求。采用ZrC粉末和C粉末配置混合粉末,进行了ZrC-C包晶固定点的灌注和复现试验,共得到2组复现循环数据,其中第1次循环结果较为理想,拐点温度为2882.298℃,拐点不确定度为26.3mK。经验证,改进后的HT271型加热炉能够在2900℃以上温度条件下稳定使用30min左右。提出了下一步高温炉改进方案,以期延长HT271型加热炉在极高温条件下的稳定使用时间。

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	孟苏
	刘旭东
	蔡静
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关键词 ：计量学, ZrC-C包晶点, 高温黑体辐射源, 辐射测温

Abstract：The ZrC-C peritectic fixed point has a very high nominal phase transition temperature (2882℃), which is higher than the upper limit of most high-temperature heating furnaces. By improving the self-designed HT271 heating furnace, the upper limit of its working temperature was increased to above 2900℃, which met the requirements of the ZrC-C peritectic fixed point experiments. ZrC powder and C powder were used to configure the mixed powder, and the filling and realizing experiments of the ZrC-C peritectic fixed point were carried out, two sets of realizing cycle data were obtained. The result of the first cycle is better: the inflection point temperature is 2882.298℃; the inflection point uncertainty is 26.3mK. It has been verified that at a temperature above 2900℃, the improved HT271 heating furnace can be used for about 30 minutes stably. In order to extend the stable use time of the HT271 furnace at extremely high temperature, the next improvement plan is proposed.

Key words： metrology ZrC-C peritectic point high temperature blackbody furnace radiation thermometry

收稿日期: 2020-08-04 发布日期: 2022-01-06

PACS:

TB942

基金资助:“十二五”技术基础科研项目(JSJC2013205B203)

通讯作者: 蔡静(1976-),女,河北石家庄人,北京长城计量测试技术研究所研究员,博士,从事温度计量测试研究。Email:caijing@cimm.com.cn E-mail: caijing@cimm.com.cn

作者简介: 孟苏(1991-),男,北京人,北京长城计量测试技术研究所工程师,从事辐射测温计量研究。Email:mengsu@cimm.com.cn

引用本文:

孟苏, 刘旭东, 蔡静, 董磊. ZrC-C包晶固定点研制及评价[J]. 计量学报, 2022, 43(1): 35-39.
MENG Su, LIU Xu-dong, CAI Jing, DONG Lei. The Development and Evaluation of the ZrC-C Peritectic Point. Acta Metrologica Sinica, 2022, 43(1): 35-39.

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http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2022.01.06 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2022/V43/I1/35

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