Ta-W alloys have unique properties but their applications at high temperatures are restricted due to their poor oxidation resistances.The addition of Al and Ti
An investigation of lanthanum oxide (La2O3)addition to tungsten heavy alloy (WHA) with a ternary composition of W-7Ni-3Fe was reported in this study.The mixed p
针对现有光学传感器难以满足大型结构中高频振动监测的需求,提出一种基于椭圆铰链的中高频双光纤布拉格光栅加速度传感器。基于传感器理论模型分析传感器的灵敏度和谐振频率,采用MATLAB和ANSYS软件对传感器的结构参数进行优化及仿真,研制双光纤布拉格光栅传感器,并进行传感器灵敏度标定实验。结果表明:传感器的谐振频率约为780 Hz,灵敏度为132.53 pm/g,横向抗干扰度小于3.3%,可用于80~500 Hz之间振动信号的实时监测。
The W-La2O3-Y2O3-ZrO2materials were prepared by vacuum hot pressing sintering process.The microstructure was characterized by scanning electron microscopy(SEM).The effects of sintering temperature,sin
In order to attain high-quality Ti-Ni-Cu film,the surface morphologies,chemical compositions and mechanical properties of Ti-Ni-Cu thin films prepared by direct current(DC)magnetron sputtering at various processes were characterized by scanning electron m
Ti(C,N)nanoparticles were added to an Al-0.3 Ce alloy by ultrasonic treatment.Further annealing at 570℃for4 h afforded the ultimate tensile strength of 79 MPa and electrical conductivity of 64.0%IACS for the Al-0.3 Ce alloy with1.5 vol%Ti(C,N)addition.Bot
In this work,amorphous Zr55Al10Ni5Cu30 alloy thin film was prepared on D36 steel substrate by magnetron sputtering method.The film was characterized by scanning
The new heat transfer alloy is highly reactive at high temperatures,and the corrosion of the container mate-rial determines the service life of the heat transfe
The microstructure and corrosion resistance of Mg-0.5 Zn-0.2 Ca-0.2 Ce alloy with different processing conditions were investigated.The composition was detected by X-ray fluorescence(XRF),and the microstructure was analyzed by optical microscopy(OM)and sc
Zn-Fe and Y-modified Zn-Fe coatings were prepared on 42 CrMo steel through pack cementation processes at 370,390 and 410℃for 4 h.Y modification was achieved through the co-deposition of Zn and Y2 O3.The effects of Y modification on microstructure,formatio