文章信息/Info

Title:

Measurement of Thermal Conductivity of Zr-Based Bulk Metallic Glass by Laser Flash Method

文章編號:

1674-3962(2023)02-0181-04

作者:

張振威; 蔣銳; 朱宇瑾; 郭維敏; 趙潔; 陳耘; 李雨蕾; 丁博遠

（中國兵器科學研究院寧波分院，浙江 寧波 315103）

Author(s):

ZHANG Zhenwei;  JIANG Rui;  ZHU Yujin;  GUO Weimin;  ZHAO Jie;  CHEN Yun;  LI Yulei;  DING Boyuan

(Ningbo Branch of Chinese Academy of Ordnance Science, Ningbo 315103, China)

關鍵詞:

激光閃射法; 導熱系數; 比熱容; 熱擴散系數; Zr基非晶合金

Keywords:

laser flash method;  thermal conductivity;  specific capacity;  thermal diffusivity;  Zr-based bulk metallic glass

分類號:

TG115.25

DOI:

10.7502/j.issn.1674-3962.202104015

文獻標志碼:

A

摘要:

激光閃射法是目前較普遍采用的測量材料導熱系數的方法，介紹了激光閃射法測量熱擴散系數與導熱系數的原理，通過NETZSCH LFA467 HT HyperFlash型激光法導熱儀，采用不同標準樣品參比在不同溫度下對Zr基非晶合金熱擴散系數和導熱系數進行了研究。結果表明：在相同標準樣品參比下，Zr基非晶合金的熱擴散系數隨著溫度升高逐漸增大；同一溫度下，在不同標準樣品參比下Zr基非晶合金的熱擴散系數相同；在相同的溫度下，Cu標準樣品參比下Zr基非晶合金導熱系數值最小，9606標準樣品參比下導熱系數值最高，310標準樣品參比下導熱系數值介于兩者之間；在相同標準樣品參比下，Zr基非晶合金的導熱系數值隨著溫度的升高逐漸增大；選用Cu標準樣品作為參比樣品測量Zr基非晶合金導熱系數更精確。

Abstract:

Laser flash method is widely used to measure thermal conductivity at present. In this paper, the principle of laser flash method for measuring thermal diffusivity and thermal conductivity is introduced firstly. The thermal diffusivity and thermal conductivity of Zr-based bulk metallic glass at different temperatures under different referenced standard samples are studied. The results show that: the thermal diffusivity of zirconium-based metallic glass increases gradually with the increase of temperature under the same referenced standard sample; at the same temperature, the thermal diffusivity measured under different referenced standard samples is the same; at the same temperature, the thermal conductivity is the lowest under Cu standard referenced sample, is the highest under 9606 standard referenced sample, is between the above two results under 310 standard referenced sample; the thermal conductivity of Zr based amorphous alloy increases with the increase of temperature. For measuring the thermal conductivity of zirconium-based metallic glass by laser flash method, using Cu standard sample as the reference is more accurate.