烧结参数对镍粉毛细芯性能的影响

doi:10.11949/j.issn.0438-1157.20170618

化工学报 ›› 2017, Vol. 68 ›› Issue (S1): 178-183.DOI: 10.11949/j.issn.0438-1157.20170618

烧结参数对镍粉毛细芯性能的影响

宋赫, 董景明, 韩志涛, 陈旭立, 李策略, 潘新祥

大连海事大学轮机热能工程研究所, 辽宁大连 116026

收稿日期:2017-05-15 修回日期:2017-05-22 出版日期:2017-08-31 发布日期:2017-08-31
通讯作者: 董景明,dmudjm@hotmail.com
基金资助:
国家自然科学基金项目（51409034）；辽宁省自然科学基金项目（2014025013）；中央高校基本科研业务费专项资金项目（3132016337）。

Effects of sintering parameters on performance of Ni porous wick

SONG He, DONG Jingming, HAN Zhitao, CHEN Xuli, LI Celue, PAN Xinxiang

Institute of Marine Engineering and Thermal Science, Dalian 116026, Liaoning, China

Received:2017-05-15 Revised:2017-05-22 Online:2017-08-31 Published:2017-08-31
Supported by:
supported by the National Natural Science Foundation of China (51409034),the Natural Science Foundation of Liaoning Province (2014025013) and the Fundamental Research Funds for the Central Universities (3132016337).

摘要/Abstract

摘要：

毛细芯（多孔介质）是环路热管的核心部件，金属粉末烧结是目前制备毛细芯的常用方法，研究烧结参数对毛细芯性能的影响有利于提高环路热管的性能。以镍粉为原料，利用烧结的方法制备了具有不同烧结参数的毛细芯，实验研究了烧结参数对毛细芯微观结构和性能参数的影响。实验表明，烧结参数对毛细芯的微观结构和性能参数具有明显的影响。随着烧结温度的升高和保温时间的延长，毛细芯的孔隙率、平均孔径和渗透率呈下降趋势；毛细芯的抽吸质量和抽吸速率与毛细芯的渗透率呈正相关；在750~800℃范围内改变烧结温度和在40~50 min范围内改变保温时间，毛细芯结构和性能参数变化明显。

关键词: 毛细芯, 烧结, 孔隙率, 渗透率, 毛细抽吸性能, 制备

Abstract:

Sintered nickel porous wick is a key component in the loop heat pipe system,metal powder sintering is a common method to product porous wicks,performance of loop heat pipe will be improved by investigating the effects of sintering parameters on the microstructures and characteristics of wicks. In this paper,sintered nickel porous wicks were fabricated,besides,effects of sintering temperature and time on the microstructure and characteristics of wicks were studied. Sintering temperature changed from 750℃ to 850℃ and sintering time varied in the range of 30-40 min. Results reveal that sintering parameters affect the microstructure and characteristics of wicks obviously. Voidage,average pore size and permeability decreases with increasing sintering temperature and time. Capillary pumping amount and capillary pumping speed are positive to permeability of the wick. Moreover,the microstructure and characteristics of wicks are sensitive to sintering temperature of 750-800℃ and sintering time of 40-50 min.

Key words: porous wick, sintering, voidage, permeability, capillary pumping characteristic, preparation

中图分类号:

TK124

宋赫, 董景明, 韩志涛, 陈旭立, 李策略, 潘新祥. 烧结参数对镍粉毛细芯性能的影响[J]. 化工学报, 2017, 68(S1): 178-183.

SONG He, DONG Jingming, HAN Zhitao, CHEN Xuli, LI Celue, PAN Xinxiang. Effects of sintering parameters on performance of Ni porous wick[J]. CIESC Journal, 2017, 68(S1): 178-183.

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烧结参数对镍粉毛细芯性能的影响

Effects of sintering parameters on performance of Ni porous wick

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