摘要
研究了PtRhMoReCr高温电阻应变合金铸态组织、退火组织、电阻-温度特性、抗氧化性及物理性能。结果表明,高频感应熔炼时,采用特殊冷却结晶器制备的合金铸锭可以避免出现穿晶组织,得到易于加工的等轴、细小的柱状晶;PtRhMoReCr合金1200℃的氧化增重量较低,高温抗氧化性能优于其他同类型合金;合金具有较高的电阻率和抗拉强度等综合性能;在0~1000℃温度区间,合金的电阻-温度保持线性关系,PtRhMoReCr合金可将材料测温范围从0~900℃拓宽到0~1000℃。
The cast structure,annealing structure,resistance-temperature relationship,oxidation resistance and physical properties of the PtRhMoReCr high temperature resistance strain alloys were studied.The results showed that the alloy ingot prepared by a special solidification method could avoid the occurrence of trans granular structure during high-frequency induction melting and had easy-to-machine equiaxed and fine columnar crystals.The PtRhMoReCr alloy had low oxidation weight gain at 1200℃,and its high temperature oxidation resistance was better than other similar alloys.The alloy also had high resistivity and tensile strength.The resistance-temperature linear range of the alloy increased from 0~900℃to 0~1000℃.
作者
尹俊美
万吉高
刘毅
张国全
李强
浦恩祥
桓源辉
申丽琴
YIN Junmei;WAN Jigao;LIU Yi;ZHANG Guoquan;LI Qiang;PU Enxiang;HUANG Yuanhui;SHEN Liqin(State Key Laboratory of Advancde Technologies for Comprehensive Utilization of Platinum Metals,Sino-platinum Metals Co.Ltd.,Kunming 650106,China)
出处
《贵金属》
CAS
CSCD
北大核心
2019年第4期54-58,共5页
Precious Metals
基金
云南省应用基础研究重大项目(2016FC006）
昆明市科技创新重大项目(2015-2-R-01367）
上海市空间飞行器机构重点实验室资助项目
关键词
金属材料
PtRhMoReCr
高温电阻应变合金
电阻-温度特性
抗氧化性
metal materials
PtRhMoReCr
high temperature resistance strain alloy
resistancetemperature relationship
oxidation resistance
