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以Fe_(41)Co_7Cr_(15)Mo_(14)C_(15)B_6Y_2非晶合金为基体,通过掺杂Co_(65)Cr_(15)Zr_(10)W_(10)非晶合金成功获得了低热导率的Fe基大块非晶合金。利用四探针电阻率测试仪和激光闪射热导率测试仪分别测量合金的室温电阻率和25~150℃下的热导率。研究Co_(65)Cr_(15)Zr_(10)W_(10)非晶合金掺杂对电阻率和热导率的影响以及热导率随温度的变化关系。结果表明:在25~150℃范围内,Fe基大块非晶合金热导率随温度升高呈线性增加。Co_(65)Cr_(15)Zr_(10)W_(10)非晶合金的掺杂导致Fe基大块非晶合金的热导率和电阻率降低,当掺杂含量高于10 at%后,热导率趋于稳定。掺杂主要引起常温下声子热导率的变化,对电子热导率影响很小。提出了通过晶化温度Tx推算Fe基大块非晶合金常温下热导率的公式,声子热导率与Tx之间的关系符合Y=0.06756X-37.31568,总热导率与Tx之间的关系符合Y=0.06228X-30.58814。
The Fe_ (41) Co_7Cr_ (15) Mo_ (14) C_ (15) B_6Y_ (2) amorphous alloy was successfully obtained as a base by doping Co_ (65) Cr_ (15) Zr_ (10) W_ (10) Conductivity of Fe-based bulk amorphous alloy. The four-probe resistivity tester and the laser flash thermal conductivity tester were used to measure the room temperature resistivity of the alloy and the thermal conductivity at 25-150 ° C. respectively. The effects of the doping of amorphous Co_ (65) Cr_ (15) Zr_ (10) W_ (10) amorphous alloys on the resistivity and thermal conductivity and the dependence of thermal conductivity on the thermal conductivity were investigated. The results show that the thermal conductivity of Fe-based bulk amorphous alloy increases linearly with increasing temperature in the range of 25-150 ℃. The doping of Co_ (65) Cr_ (15) Zr_ (10) W_ (10) amorphous alloys led to the decrease of thermal conductivity and resistivity of Fe-based bulk amorphous alloys. Thermal conductivity tends to be stable. Doping mainly causes the change of phonon thermal conductivity at room temperature, which has little effect on electronic thermal conductivity. The formula for calculating the thermal conductivity at room temperature of Fe-based bulk amorphous alloys by the temperature Tx is proposed. The relationship between the phonon thermal conductivity and Tx is in accordance with Y = 0.06756X-37.31568. The total thermal conductivity and Tx The relationship with the Y = 0.06228X-30.58814.