【摘 要】
：
Laser cladding experiments were done on a 5-kW continuous wave CO2 laser to synthesize TiC and TiB reinforced titanium matrix composite coatings on Ti-6Al-4V al
【机 构】
：
National Engineering Research Center for Nonferrous Metal Composites
论文部分内容阅读
Laser cladding experiments were done on a 5-kW continuous wave CO2 laser to synthesize TiC and TiB reinforced titanium matrix composite coatings on Ti-6Al-4V alloy with a mixture of Ti and B4C precursor powder. The thermodynamics of the reactions were calculated and analyzed. The microstructure and phase evolution of TiB and TiC composites were investigated. The results showed that the chemical reaction between Ti and B4C would release much heat, and these compounds, TiC, TiB, and small amount of TiB2, can be formed on the surface of Ti-6Al-4V alloy if the supplied energy is sufficient to excite the reaction among the initial products. A good metallurgical bond between the coating and the substrate can be achieved. The microhardness of coating was irregular and the maximum value was approximately HV600.
其他文献
For optimizing the cutting depth of spiral drum type cutting head, the relations among collecting ratio, interfusing ratio of mullock and cutting depth of the m
By using the binary anionic/cationic surfactants system CH3(CH2)nOSO-3/CH3(CH2)nN+(CH3)3 as an example, the molecular exchanging energy (ε) of adsorption on th
介绍了长子县水资源紧缺状况,提出了节水型社会建设是解决长子县水问题的根本途径,介绍了长子县节水型建设中的主要经验和做法,并对下一步的发展提出思考及建议.
Because of limits of cost, in general, the test data of weapons are shortness. It is always an important topic that to gain scientific results of weapon perform
The calculation error of the gauge-meter model will affect the gap setting precision and the self-learn precision of rolling force. The precision of the gauge-m
An energy model for the melt of bulk metallic glass (BMG) with clusters was established, the Gibbs free energy and interfacial energy for the Zr-Al-Ni ternary a
The influence of InAs deposition thickness on the structural and optical properties of InAs/InAlAs quantum wires (QWR) superlattices (SLS) was studied. The tran
Optical emission spectroscopy (OES) was used to study the gas phase composition near the substrate surface during diamond deposition by high-power DC arc plasma
Through phase transformation kinetic analysis and experimental observation, the δ/γ transformation occurring in the non-equilibrium peritectic Fe-4.33at.%Ni a
Ni-W-P coatings were deposited on the surface of glass fibers by the electroless plating process. The bath was very stable through the palladium salt test. Ther