Yong Zhihua, Lin Xigang, Liu Wei, Deng Ming. Properties and Applications of the Diamond Like Carbon Films[J]. Journal of Materials Engineering, 1997, 0(1): 3-7.
The technology of diamond like carbon (DLC) films on singlecrystal silicon and other substrates was studied by low-energy ion beam deposition. Properties of DLC films were tested and applications were investigated.
Dai Zhaochen, Liu Yu, Shi Xiaoli, Huang Ying, Li Qiushan. An Investigation on Preparation and Properties of Two Phase Porous Calcium Phosphate Bioceramics[J]. Journal of Materials Engineering, 1997, 0(1): 8-10,20.
In this paper, the process of two phase porous calcium phosphate ceramics made of calcium phosphate colloid chemically synthesized from calcium salt and phosphate has been introduced. Experimental results showed that after foam shaped, heat treated and sintered, the mechanical properties of the ceramics above-mentioned are superior to that of the hydroxylapatite and its biocompatibility is well.
Li Wen, Zhang Ruilin, Yu Ruihuang. Calculation of Effects of Interstitial Impurities on Some Phase Transformation Temperature of Ti-Al Diagram[J]. Journal of Materials Engineering, 1997, 0(1): 11-13,16.
According to the "E. E. T",the effect of interstitial impurities on valence electron structures of α,β and γ (TiAl) phases of Ti-Al system is analyzed,the effect of interstitial impurities on phase transformation temperature is calculated,then some doubtful experimental results are explained quantitatively.
Zhao Haiou, G. E. Totten, G. M. Webster, F. Yim. Poly (Alkylene Glycol) Quenchants for Aluminum Heat Treating[J]. Journal of Materials Engineering, 1997, 0(1): 14-16.
It is the objective of this paper to review the work that has been reported thus far to demonstrate the range of application possibilities for type I by the aerospace industy, one major class of PAG quenchants in aluminum heat treating.
Wei Yuansheng, Wang Zhenqing, Wang Guangsheng. Database of Heat Treatment Process for Aeronautical Materials & CAPP System[J]. Journal of Materials Engineering, 1997, 0(1): 17-20.
It is a matter of great urgency developing a database of heat treatment (HT) process for aeronautical materials and establishing a CAPP system. The ways to launch into a research and the methods to complete which have been expounded in this paper. It will be seen from examples that an integration of both of the database and the microsoft can successfuly realize a disposal of function, numerical calculation and intelligence problem around CAPP by computer. Appearance of the system will propel a development of HT for aerocraft forward.
Wang Qibao, Guo Mengxiong, Han Minfang. A Study on the Rate-determining Step of Growing SiC Whisker[J]. Journal of Materials Engineering, 1997, 0(1): 21-23,27.
It is an important method that synthetic SiC whisker from rice hulls. In this paper, the rate-determining step of the SiC whisker grown by VLS process was studied, and a new composite catalyst that enhanced the reaction rate had been researched. It was found that the reaction generated SiO from SiO2 and C in rice hulls with high temperature was not only the rate-determining step of generating SiC particle, but also SiC whisker.
Zhao Xun, Yang Shengliang, Yang Deming, Jiang Jixiang. A Study of the Ageing Behaviour of SiCw/7475Al Composite[J]. Journal of Materials Engineering, 1997, 0(1): 24-27.
The aging process of SiCw/7475Al composites has been studied via harder test and DSC analysis results. It shows that comparing with the matrix alloy the composites has a lower age-hardening effect, a higher opitimal artifical aging temperature and its aging process has been retarded somewhat. It was analyzed that the precipitation characteristics have a close relationship with the high density of the dislocation in the composite, and the interaction between the precipited phase and the dislocation.
Dong Shangli, Jiang Longtao, Mao Jianfu, Cui Yuexian, Yang Dezhuang. Influence of Ageing on Microstructure and Tensile Properties of a SiCw/Al-Li-Cu-Mg-Zr Composite[J]. Journal of Materials Engineering, 1997, 0(1): 28-31.
Microstructure and tensile properties of a SiCw/Al-Li-Cu-Mg-Zr composite, fabricated by squeeze casting method and then aged at 190℃, were investigated by use of hardness measurement, SEM,TEM and tensile test. The results indicate that the major and secondary strengthen precipitates in the composite are δ’(Al3Li) and δ’(Al2CuMg) phase, respectively. Confirming from the TEM observations, the growth rate of δ’ phase and nucleation of δ’ phase are accelerated by the high density dislocations in the composite matrix. Aging treatment has obvious influence on strength of the composite, while little effect on fractographs.
Zhang Lianrong, Ye Julan, Zhong Zhigang, Wang Xiuyi. Materials Analysis on I-171 Aircraft Brake Parts[J]. Journal of Materials Engineering, 1997, 0(1): 32-34.
In this paper, materials of I-171 aircraft brake parts (pressure assembly, rotor assembly, stator assembly) are analysed and principle on domestic materials selection of brake parts is given.
Sun Jisheng, Liu Xiaofang, Kou Xinping. A Study on Vacuum Brazing of the High-pressure Heat Exchanger Core for Stainless Steel[J]. Journal of Materials Engineering, 1997, 0(1): 35-37.
The technology of vacuum brazing and the selection of brazing powders that is applied to the high-pressure heat exchanger core has been studied. The scheme and technical parameters which was adopted in productive practice was formulated. The results of batch production has been indicated that the adopting technology had been succeeded extremely.
Gan Qingmin, Hu Naixin, Wu Hongming, Yang Bingwen. Study on Preparation of Antimony Trichloride from Antimony Sulphide Ore[J]. Journal of Materials Engineering, 1997, 0(1): 38-39.
By means of distillation-fractional condensation high purity antimony trichloride was made from antimony sulphide ore. This technique has many advantages-simple technology and equipment less energy consumption and high purity.
Huang Yudong, Shen Yi, Zhang Zhiqian, Zheng Xu, Zhang Xiaoming, Fan Hongbin. The Resin Content on-line Monitoring in Composite Prepreg Tapes Using Beta-ray Technique[J]. Journal of Materials Engineering, 1997, 0(1): 40-42.
In this paper a beta-ray gauge with 14C weak source was established to measure both release paper and coated paper with epoxy resin during the direct hot-melting coating manufacture of prepregs. Meanwhile the resin content of coated paper was tested uncontinuously using the weight method. The results indicated that the intensity ratio of beta-ray I/T0 was consistent with the resin content value. Therefore we concluded the beta-ray gauge with 14C weak source is suitable for the monitoring of resin content in prepreg on line.
Xu Shiqing. Failure Analysis of the Hydrogen Embrittlement of Extension Spring[J]. Journal of Materials Engineering, 1997, 0(1): 43-45.
The fracture characteristics of steel 70 extension spring which appeared in manufacturing and employing have been analyzed. The result shows that the fracture of extension spring is a hydrogen embrittlement because of adsorbed hydrogen in the plated procedure. The improvements on processing have been provided.
Cao Shoude. Present Situation and Tendency of Aeronautical Sealants[J]. Journal of Materials Engineering, 1997, 0(1): 46-48.
Present situation and tendency of development and application for aeronautical sealants such as liquid polysulfide polythioether polysiloxane polyurethane flexible polyimide sealant and polymer containing fluoride is reviewed.
