Sun Shoujin, Liu Wenchuan, Li Minjun. C/C Composites Coated With SiC By CVD[J]. Journal of Materials Engineering, 1992, 0(4): 1-4.
Oxidation resistant carbon/carbon (C/C) composites were fabricated by chemical vapor deposition (CVD) of SiC on the surface of C/C composites which were densified in preform of carbon cloth lay-up by chemical vapor infiltration (CVI) of carbon.
Chen Huanmin, Qi Shuhua, Guo Yang. Wall-thickness and Its Accuracy Computation of Composite on Aircraft Covered Plates[J]. Journal of Materials Engineering, 1992, 0(4): 5-7.
This paper introduces mainly the effect of non-uniformity of carbon-fibers and ratio of epoxy weight and solidified technology parameters (pressure, temperature and time etc.) on the thickness of carbon/e-poxy composite. The formulae of thickness in accuracy ware derived based on the principle of accuracy and then through the computation and analysis, the formulae might be proved and applied to practice.
Gao Liangchang. The Properties and Application of the Injection Shaping Type Polyetherimide (YS-30) and its Composites[J]. Journal of Materials Engineering, 1992, 0(4): 8-11,29.
The article introduces the machining, properties and application of the injection shaping type polyetherimide (YS-30) and its composites.
Gan Yongxue, Chen Changqi, Li Chenggong. Effect of Particle Size on the Microwave Attenuation Property of Mn-Zn Ferrite[J]. Journal of Materials Engineering, 1992, 0(4): 12-13.
In this paper, the microwave attenuation property of composite materials containing Mn-Zn ferrite with different particle sizes has been studied. It has been found that four particle sizes of Mn-Zn ferrite embodied epoxy composite materials have similar microwave absorbing characteristics. While the -80~120 mesh Mn-Zn ferrite particle embodied composite has a higher and wider absorbing peak. The central frequency of the peak shifts into high frequency direction.
Wu Yilei, Zhang Shaoqing, Chai Shichang, Yu Zhenghua. The Effect of Oxide on the Superplasticity of P/M Al-Li-Mg Alloy[J]. Journal of Materials Engineering, 1992, 0(4): 14-16.
The effect of oxide on the superplasticity of P/M Al-Li-Mg alloy has been studied by the SEM and image analysis system. It shows that the fracture feature of the alloy would transit from intergranular to inter-PPB with the increasing temperature. The strength of PPB is determined by the content of oxide on it. Under the equal conditions, with the decreasing of power particle diameter, the oxide increases and the superplasticity of the alloy deteriorates.
Zhao Weibiao, Ye Zhizhen, Tao Zhengyan, Wang Xiaozhen. Investigation of High Temperature Strengthening of Platinum Alloy Containing the Trace Y and Zr[J]. Journal of Materials Engineering, 1992, 0(4): 17-19.
The effects of trace element Y and Zr oh the high temperature strengthening of Pt are studied. The influence of Y and Zr on the common mechanical properties, electrical property, creep rapture life and volatilization loss at high temperature of Pt are also investigated in the present paper.
Zhang Keshun, Li Guohao, Wang Yanlong. Study on the Composition Analysis of Hydrogen in Titanium Standard Materials[J]. Journal of Materials Engineering, 1992, 0(4): 20-22.
This paper describes the preparing process and key techniques for the standard materials used for analyzing the hydrogen in titanium. Good results are obtained from the tests to the corresponding problems in determining the standard values.
Zhang Ying, Li Xueming, Gao Yang. The Effect of Heat Treatment on Tensile Properties of a Ti3Al-Based Alloy[J]. Journal of Materials Engineering, 1992, 0(4): 23-25,22.
This paper presents the effect of heat treatment parameters (temperature, cooling rate and ageing times) on tensile properties of Ti-25Al-10Nb-3V-1Mo (atomic percent) at room temperature and at 700℃. By means of TEM, SEM and optical metallography, the microstructure, f ractography, phase structure and dislocation morphology of the alloy are observed and related to the tensile properties.
Chen Weizheng. Study on Casting Technology for Bimetallic Cylinder Block of Hydraulic Pumps[J]. Journal of Materials Engineering, 1992, 0(4): 26-29.
This paper introduces the casting technology of pouring bronze ZQPb15-8 on the cylinder block made of steel 45. The paper enumerates the testing datum of all kinds, such as physical and chemical properties, friction and wear, scanning electron microscope, boundary diffusion, life testing and site check. All proves that this casting technology is simple and reliable.
Zhu Feng, Zhang Honghai, Huang Qikui. The Application of Scanning Acoustic Microscope in Materials Science[J]. Journal of Materials Engineering, 1992, 0(4): 30-32.
This article introduces the development and principle of the SAM (Scanning Acoustic Microscope). The imaging mode, characterization of properties and its applications in materials science are described briefly.
Wu Peiyuan. Study on Fault Reason of the WJ5A-1 Type Engine[J]. Journal of Materials Engineering, 1992, 0(4): 33-37.
The WJ5A-1 type (No.850086) engine fault was occured during the flight service. Through disassemble and check to the engine, we found that both the I stage gas turbine blade and the support component had been fatigue fractured off. the result obtained by macro-micro-fractography and metallography invecsti-gation showed that the cast defects produced in the manufacture process was the primary reason of the failure of blade fracture. The broken blade is the troublemarker of the engine.
Zhou Wen. The Development of Composites Used in Automobile[J]. Journal of Materials Engineering, 1992, 0(4): 47-50.
The article has detailed the applications and developments of composites used in automobile, such as Fiber-reinforced plastics (FRP), plastics blends, sheet molding compound (SMC) and so on. Simultaneously the composite-parts, such as motor-parts, body-parts, bumpers and quarter panels used in automobile have been introduced. The developments of the domestic composites used in automobile have been evaluated also.
