Refractory metal refers to metal materials with melting point greater than 2000℃, mainly including tungsten, molybdenum, tantalum, niobium, rhenium, vanadium and other six metal elements, as well as alloy materials based on the six metal elements [1]. Due to the high temperature performance, creep r...

Acetabular bone defects are a common orthopedic problem whose main etiologies include trauma, infection, tumors, and various congenital diseases [1]. This bone defect poses a great challenge to artificial total hip replacement surgery, especially in acetabular reconstruction the key to successful su...

Tungsten is an important refractory metal with the characteristics of high melting point, high density, high strength, good thermal conductivity and low thermal expansion coefficient. It is widely used in aerospace, military weapons, electronics and nuclear industries [1,2]. In the International The...

Abstract: Tantalum-based alloys have become one of the important candidate materials for high temperature structural parts in the aerospace field due to their high melting point and good high temperature strength, but poor high temperature oxidation resistance is the key problem restricting their ap...

Refractory metals are widely used in many fields such as aerospace, defense and military and nuclear power industries due to their high melting points, excellent high temperature resistance, corrosion resistance and radiation resistance [1]. The application of tungsten and tantalum in the electric l...

0 Introduction Ta-W alloy has high high temperature strength, good ductility, weldability and excellent corrosion resistance. It is suitable for working environments such as high temperature, high pressure and corrosion resistance. It is widely used in chemical industry, aerospace, atomic energy ind...

Abstract: This paper introduces the research progress of additive manufacturing of pure tungsten, high-density tungsten alloys and W-Cu composites from the aspects of forming process and microstructure of formed parts, and introduces the application and main problems of additive manufacturing of tun...

1 Introduction In recent years, tantalum metal is widely used in aerospace, defense, chemical industry and other fields due to its high melting point and low vapor pressure [1]. In addition, tantalum and its alloys have been increasingly used in 3D printing of medical human implants due to its excel...

Abstract: The high carbon niobium tungsten alloy HCNb521 sintered bars were subjected to secondary electron beam melting to control the carbon, zirconium and gas content of the alloy. The microstructure of the smelted ingot after high temperature annealing was analyzed, and the mechanical properties...

0 Preface The rail/attitude control two-component liquid rocket engine is the power core of missiles, satellites, spacecraft and other space vehicles. In order to meet the demand of high specific impulse, lightweight, long life and high reliability of the engine, the material of the thrust chamber o...

Tungsten (W) and its alloys are widely used in electronic engineering, manufacturing, aerospace, medical [1-5] and other fields due to its high density, high melting point, high thermal conductivity, high recrystallization temperature, low coefficient of thermal expansion, and high strength and hard...

possesses good modulus of elasticity, induced easy to produce bone tissue, good wettability and other characteristics, which has become the most ideal hard tissue implantation material recognized by the medical community [5-7]. The design of porous tantalum cells with millimeter-scale pore size can...