Li Jingui, Wang lean, Qan Xinyuan. Carry out Assigned Vendors System of Aviation Process Materials for Improving the Quality of Aviation Products[J]. Journal of Materials Engineering, 1994, 0(7): 1-2,35.
The necessity for assigned vendors system of aviation process materials is discued. The implicationand the type of aviation process materials,the procedure and the characteristic of examination and approvalof aviation process materials at home and abroad are intrtoduced. In authors' view, to unity the approval ofasslgned vendors system of aviation process materials is fit to our national conditions. Finally,the principleof putting the major before the general and putting the ease before the difficulty for asslgned vendors system of ayiation proress materials in China is recommend.
Dong Yunming, Mi Ronggen. Development of Breather Material for Composite Moulding[J]. Journal of Materials Engineering, 1994, 0(7): 3-4.
Property compartion hotween American brea ther materi al produced by Airtech Company and Chinesebreather materials produced by Shanghai Non-Woven Cloth Factory and Beijing Capet Wcollen Spinning No.1 Factory has been camied out in the papor. The 330g/m2 woollen-type polyester non-woven cloth,propeties of which are more near to those of Airweave N10,preduced by Beijing Carpet Wcollen Spinning No.1 Factory has been recmmended as the breather material for use in composite monlding.
Li Sueming, Du Juan, Gao Yang. Analysis of Cracks in the Tenon of Ti-55 Titanium Alloy Blades[J]. Journal of Materials Engineering, 1994, 0(7): 5-8.
On the baais of analyzing the cracks in the tenon of Ti-55 high temperanire titanium alloy blade un-dergoing vibration fatigue test,the characteristic of fretting wear and fatigue,fracture mechanism and factors of effct on fretting fatigue have been studied in this paper.
Lu Peizhen, Chen Biankun. Summary of Prhecipitation in the Process of ultra-fine Powder Manufacture[J]. Journal of Materials Engineering, 1994, 0(7): 11-13.
Illustrates mainly about the effect of pH,Precipituting velocity and dispersant on the manufacture and properties of ultra-fine ceramic powder. It shows that we should take overall consideration on the actual kinetics and thermodynamics for different kind of powder and it determines the ultimate process,In order to produce the cheepost and the best ultra-fine cerarmic powder,the suitable alignment of these factors is needed.
Wang Hongtao. A Study on Optimizing the Heat-Treatment Parameters of Heat-Resistant Stainless Steel 1Cr12Ni3Mo2VA[J]. Journal of Materials Engineering, 1994, 0(7): 14-17.
Structurtes,precipitaion of carbides and dislocation structures in 1Cr12Ni3Mo2VA martensitic stainlesssteel at different tempering tempratures are explained. The study shows that adavantageous comblnationproporties are obtained after heat treating of austenization at 1050℃ for 1 hour and air queching to roomtemporature and aging at 650℃ for 2 hours air ccoling.
Zhang Lifang, Tong Fuqiang, Ren Baolin, Jiang Hancheng. Factor Study on Electroplating of Carbon Fibre with Nickel[J]. Journal of Materials Engineering, 1994, 0(7): 18-21.
This popor introduces process of electroplating with nickel on carbon fibre. Some effective factors are studied emphatically,they are treatment before electroplating, current density of negative electrode and electroplating times etc,which effect structure of layer and mnrphology of surface. The base in practice to use of the process is provided,Cu-Ni bilayer on carbor fibre are also researched.
Xia Liming, Wang Xinggui, Liu Chunmei, Zhu Suidong, Cong Xin. Study on the N+Beam Bombardment on the Surface of 65Nb Steel[J]. Journal of Materials Engineering, 1994, 0(7): 22-23.
The new type of 65Nb die steel after quenching and temporing,the sample surfaces of which were bomborded with N+ heam, was made research on abrasion resistance by means of the interferometry. The optimum process of N+ beam bombardiment on abrasion resistance was given. This preeess was used for the crossed punch of 65Nb,the average life-span of which was increased greaily.
zhao Xinwei, Pei Zhibin, Tian Changsheng. The Preparation of Ferroelectrics Thin Films by So1-Gel Processing[J]. Journal of Materials Engineering, 1994, 0(7): 24-26,31.
The essential principle, technological process and advantages of the ferroelectric thin films prepared by sol-gel prcessing are introduced.New achievement in the preporation of ferroelectric thin films by sel-gel processir1g is reviewed.
Gui Minchang, Jia Jun, Li Qngchun, Feng Jianhong. Design and Application of the Instrument of Electrical Resistivity Measurement for Liquid Metal[J]. Journal of Materials Engineering, 1994, 0(7): 29-31.
The methods of measureing the electrical resistivity of liquid metal have ben reviewed. The instrument of electrical resistivity meastirement by four-probe methed has been deaigned and made. The electricalresistivity of the liquid Al has been measured by means of the insrmment,and the instrument has beenproved to available.
Wang Lean. The Technologies of Physical Simulation for Forging Process[J]. Journal of Materials Engineering, 1994, 0(7): 32-35.
The methods of physical simulation are exporimental science combined thcory with experiment on the basis of similar principle. It is important method to study straim field and stress field in forging process. In this peper, similar conditions of physical simulation in forging process are discussed. The methods of physical simulation and simulant materials which are commonly used in forging process are compared. Finally,it is noted that physical simulation in forging preeess must be researched for raising qulity of important closed die forgings of powder suporalloy turbine disk and landing gear before forged material object.
