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Superplastic forming of Ti6Al4V alloy using ZrO2-TiO2 ceramic die with adjustable linear thermal expansion coefficient JIANG Shao-song(蒋少松), ZHANG Kai-feng(张凯峰) National Key Laboratory...; Abstract: Firstly, the relation between the coefficient of thermal expansion(CTE......
/DLC/W-S-C composite film; magnetron sputtering; adhesion strength; friction coefficient 1 Introduction Transition metal dichalcogenides (MS2) such as MoS2 and WS2, are most widely used in the aerospace parts due to their low friction coefficient and high wear resistance in vacuum and dry gas conditions. Their low friction coefficient is based on the lamellar structure, where a sheet of M atom......
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Regularized determination of interfacial heat transfer coefficient during ZL102 solidification process SUI Da-shan(隋大山), CUI Zhen-shan(崔振山) National Die and Mould CAD Engineering Research Center...; Abstract: The interfacial heat transfer coefficient(IHTC) between the casting and the mould is essential......
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respectively, in order to work out the wear rate and friction coefficient. The microstructural and structural characterization of the as-received feedstock wires and coatings was obtained by scanning... is the wear rate; Δm is the mass loss; NC is the number of cycles. The value of the static friction coefficient is obtained by the equation below: ......
The Influence of Carburizing Parameters on Carbon Transfer Coefficient Tadeusz Sobusiak1 (1.Institute of Precision Mechanics, Warsaw, Poland) 摘要:Definition of coefficient of carbon transfer..., and actual surface carbon content".In this paper, a model is presented of carbon transfer from endothermic atmospheres to carbon steel. The carbon transfer coefficient values were determined......
speed jet electroplating and then processed with plasma transferred arc(PTA) scanning process. The microstructure, microhardness and friction coefficient of PTA scanning treated specimens were.... The composite coating has an average microhardness of approximately HV 800. The friction coefficient of PTA scanning treated specimens (oscillated at around 0.25) is considerably lower than that of TiN/Ni......
Trans. Nonferrous Met. Soc. China 25(2015) 2342-2351 Effect of friction coefficient in deep drawing of AA6111 sheet at elevated temperatures Wen-yu MA1, Bao-yu WANG1, Lei FU2, Jing ZHOU1, Ming-dong... September 2014; accepted 28 November 2014 Abstract: The effect of friction coefficient on the deep drawing of aluminum alloy AA6111 at elevated temperatures was analyzed based on the three conditions......
. The results show that the friction coefficient (0.1170-0.1332) between the chromium-plated piston rings and cast iron cylinder liners increases with the increase of wear time, and the mechanism is adhesive wear. On the other hand, the laser cladding processes reduce the wear losses of the piston ring and partner cylinder liner and have the lower friction coefficient (0.067-0.085), which reduces......
