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Gas sensitivity of indium oxide HUANG Shi-zhen1, 2, LIN Wei1, 2, CHEN Wen-zhe1, 2 1. Fujian Key Laboratory of Microelectronic IC, Fuzhou University, Fuzhou 350002, China; 2. College... at low heating temperature, and the status is reversed at high heating temperature.. Key words: indium oxide; gas sensor; gas sensitivity ......
°C) [9, 10]. Compared to the pressure regulator scheme, the pressure energy of the high-pressure natural gas can be retrieved by preheating scheme and thus it has become a focus of recent researches... energy [17]. For the PRSs located near the industrial regions, waste heat is also an alternative source for natural gas preheating processes [18-21]. Figure 1 Schematic views of depressurization......
Prediction of preheating conditions for inclined laser assisted machiningKIM Kwang-sun, LEE Choon-man(School of Mechatronics, Changwon National University, Changwon 641-773, Korea)Abstract:For laser assisted machining, shape of preheating laser heat source is changed irregularly because of complexity of material shape. So, the preheating temperature should be controlled by adjusting the feed rate......
by the flame and a better preheating effect on hydrogen can be achieved under g=0. To confirm this, the axial profiles of gas temperature and inner wall temperature of the two cases are plotted in Figure 8.... Therefore, the buoyancy effect is overall negative at very low jet velocities. Key words: micro jet diffusion flame; buoyancy effect; flame structure; flame temperature; air entrainment; preheating effect......
Optimising Gas Quenching Technology through Modelling of Heat Transfer Qingfei Zhang1,Aymeric Goldsteinas2,Xavier Doussot2,Florent Chaffotte3,Didier Domergue3,Linda L4 (1.Air Liquide Shanghai Co., Ltd, Shanghai, PR China;2.ECM Service, Fontaine, France;3.e;4.e)fevre(e) 摘要:Gas Quenching represents an environmentally friendly alternative to more commonly-used oil quenching. Yet,the performances......
; 文章编号:1672-7207(2007)04-0721-07 Influence of different kinds of cathodes on thermal stress distribution of drained cell in gas preheating process WANG Zhi-qi1, XIA..., China) Abstract: A finite element model of half drained aluminum reduction cell in gas preheating process was developed by software ANSYS. The numerical simulation on four kinds of cathodes (amorphous......
Gas Quenching during Age Hardening of the Aluminium Casting Alloy AI-7Si-0.3Mg A.Rose1,H.W.Zoch1,F.Hoffmann1,O.Kessler1 (1.Stiftung Institut fur Werkstofftechnik, Bremen, Germany) 摘要:For quenching... stresses.Particularly at thin-walled or complex shaped parts local plastic deformations can occur by the uneven thermal stresses. In relation to the conventional quenching procedures in aqueous media, gas......
Preparation and performance of a cold gas dynamic sprayed high-aluminum bronze coatingLi Feng1,2,Chang Guan1,Ji-rong Chang1,Hai-min Zhai1,2,Guo-sheng An1,2,Wen-sheng Li1,21. School of Materials... on the coating performance were investigated. The results indicate that the hardness of bronze powders decreased and the coating deposition rate increased after the preheating treatment of the bronze......
Use of nitrogen gas in high-speed milling of Ti-6Al-4V KE Ying-lin(柯映林)1, 2, DONG Hui-yue(董辉跃)1, LIU Gang(刘 刚)1, ZHANG Ming(章 明)1 1. Zhejiang Provinvicial Key Laboratory of Advanced Manufacturing...; Abstract: To inhibit chips burning in the high-speed cutting of Ti-6Al-4V, nitrogen gas with 0.7 MPa pressure was ejected at the milling zone. The high speed flowing of nitrogen gas......
:middlename>, WANG M, YANG D. A selective NH3 gas sensor based on Fe2O3–ZnO nanocomposites at room temperature [J]. Sensors and Actuators B: Chemical, 2006, 114: 910-915. [18] MANI G K, RAYAPPAN J B B.... Nanoparticulate gold catalysts for low-temperature CO oxidation [J]. Journal of New Materials for Electrochemical Systems, 2004, 7: 163-172. [23] TAVOLI F, ALIZADEH N. Optical ammonia gas sensor based......
