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      • Renyuan Hu
        Vol. 09, Issue 8, (1986)
        摘要：Ion implantation changes mechanical and optical properities of the glass surface. After ion bombardment the change of refractivity of glass surface has been measured. It has been found that the change of refractivity is concerned with Na ion migrations of glass surface during Ar ion bombardment and consists with Na composition contribution measured by NRA in related references. Network damage and volume contraction during Ar ion bombardment was observed.  
        关键词：ion implantation modification of glass;network damage;Na ion migration   
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        发布时间：2022-08-16
      • Zhonglie Wang,Yahong Qian,Xunliang Ding,Renyuan Hu,Yili Liu
        Vol. 09, Issue 8, (1986)
        摘要：Tungsten silicide was formed by ion beam mixing at different temperatures and its crystallographic structure was investigated. The comparison was made between the sili-cides of directly sintering and of ion-beam-induced. It was found that the temperature of forming tungsten silicide was decreased by ion beam mixing. A "three-step" model was given in an attempt to explain the mechanism of silicide induced by ion beam.  
        关键词：tungsten silicide;Ion beam mixing;sintering;silicide phase   
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        发布时间：2022-08-16
      • Zhonglie Wang,Renyuan Hu,Yili Liu,Wenxun Wang,Jianqiang Lü
        Vol. 09, Issue 8, (1986)
        摘要：The behaviour of atomic mixing for multilayer W-Cu and Ta-Cu systems irradiated by 180 keV Xe+ beam to a dose of 4.5×1015/cm2 at the temperatures ranging from 77K to 600K has been studied. The completely different results for W-Cu and Ta-Cu systems were found. For the W-Cu system the results of experiments show that the Cu atoms migrate to and accumulate on the surface of sample. With increasing of the temperature during ion irradiation the amount of migrated Cu atoms from the inner Cu layers to the surface of sample increases. For the Ta-Cu system it was found that atomic mixing occurs while irradiated at 77K and demixing of Ta-Cu was observed while irradiated at high temperature. The possible mechanism for these phenomena has been discussed.  
        关键词：Ion beam mixing;W-Cu and Ta-Cu systems   
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        发布时间：2022-08-16
      • Chengzhou Ji,W. Roth,R. Benenson
        Vol. 09, Issue 8, (1986)
        摘要：K+, Mn+, Cu+, Y+ and Ag+ ions have been implanted tentatively into beta-alumina single crystal. The projected ranges are 20% to 30% greater than those predictéd from LSS theory while the range stragglings are quite different upon the implanted ions. Channeling measurements suggest that the implanted Mn atoms diffuse both inwards and outwards due to annealing and eventually occupy the aluminium sites in the lattice meanwhile the damage region can be restored through recrystalization. The angular width measured along the C axis(0.95°) is in good agreement with the value (0.97°)calculated from a simplified model. The adsorbed water diffuses rapidly near the surface region of the crystal, but rather slowly in deep region. Water molecules which have been bound to the lattice atoms cannot be removed until the annealing temperature is raised up to 700℃.  
        关键词：solid state ionics;LSS theory;Channeling effect;reduced parameters;projected range;minimum yield;angular width   
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        发布时间：2022-08-16
      • Yong Qiao,Chaowei Luo,Shide Ding
        Vol. 09, Issue 8, (1986)
        摘要：This paper demonstrates that friction characteristics of precision friction components, such as building of lubricating oil film and carrying capacity, may be improved by ion implantation.  
        关键词：Ion implantation;Wear;Friction   
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        发布时间：2022-08-16
      • Daoda Liao
        Vol. 09, Issue 8, (1986)
        摘要：The dual-purpose machine of ion implantation and vacuum evaporation-ion beam mixing developed by the university can generate beam current of middle intensity in large area. It has the directional evaporation source which possesses high heat efficiency and can save the raw material and avoid serious pollution to the system. It can automatically scan large target in the chamber for either large or small workpieces. The conventional mass analyser and special acceleration-focussing lenses can be saved. Simple structure, convenient operation, lower price and higher economic benefit make the feature of this machine. It can be used as a means of research or production for new material. It also can be used in surface modification of non-semiconductors material and in ion beam irradiation of seeds of plants.  
        关键词：Ion implantation;vacuum evaporation;Ion beam mixing;Surface modification;Irradiation;dual-purpose machine   
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        发布时间：2022-08-16
      • Wei Tian,Jun Li,Niansun Cao
        Vol. 09, Issue 8, (1986)
        摘要：The specimens of Fe deposited with Cr-C or Cr-Mo double layer films were bombarded by Ar+ or Xe+ ion beam at a dose of 2×1017 cm-2.Electro-diffraction analysis demonstrated that amorphous structure was formed after IBM. In the deeper layer a metastable phase was formed. Electro-diffraction and TEM exam have been used to investigate the transformation from amorphism to crystal when heating-up. The electrochemical results have shown that the anodic current Ic and Im were reduced remarkably for passivation after IBM.  
        关键词：ion beam bombardment;amorphous;TEM analysis;electrochemical exam   
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        发布时间：2022-08-16
      • Guanghou Wang,Xingbo Shu
        Vol. 09, Issue 8, (1986)
        摘要：The formation mechanism of sputtered metal ion clusters is discussed. The interatomic distance, energy of the ground state as the dissociation energy for Cu3 clusters are calculated by Hüchel approximation method.  
        关键词：metal ion cluster;emission;formation;sputtering;valence bond   
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        发布时间：2022-08-16
      • Fuzhai Cui
        Vol. 09, Issue 8, (1986)
        摘要：TCIS code is of monte carlo program, which can simulate the process of atomic collision cascades in solids. TCIS code has four versions up to date. The functions and applications of those versions are described in this paper. Several computations of TCIS show that it can be used to study a variety of problems in ion implantation range, sputtering, radiation damage and ion mixing.  
        关键词：atomic collision cascade;Monte Carlo;Computer simulation   
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        发布时间：2022-08-16
      • Honghong Wang,Ji Zhang,Xiaomin Liu,Hengde Li
        Vol. 09, Issue 8, (1986)
        摘要：The experimental results of ion beam mixing in B-Ni and B-Fe systems are reported. After being implanted at room temperature with 300 keV Xe+to 2 × 1015, 6×1015 and 1×1016 ions/cm2, the multilayer samples of various compositions are analyzed with transmission electron diffraction. The structures of some samples of B-Ni and B-Fe are transformed to amorphous state, and the remains are still in crystalline state. A brief discussion on the results is included.  
        关键词：Ion beam mixing;Multilayer film;B-Ni   
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        发布时间：2022-08-16
      • Xiangjun Fan
        Vol. 09, Issue 8, (1986)
        摘要：Amorphous Pd0.67B0.33 alloys have been formed at 6K by ion beam mixing. The mixing process was monitored by "in situ" RBS experiments. The resistivities of the samples and their relations with temperatures were measured "in situ" using a four-point probe technique. Superconductivity was not observed in these alloys. TED obser-vations show the existences of the amorphous structures.  
        关键词：Ion beam mixing;Amorphous alloys;"in situ" Rutherfored backscattering and electrical transport measurements   
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        发布时间：2022-08-16
      • Tianmin Wang,Binqing Li,Fuchao Wang,Faru Zhao,Meizhen Wu,Shufen Wang
        Vol. 09, Issue 8, (1986)
        摘要：A study was made on the nitrogen ion implantation layer of the 9Cr18 and GCr15 steels. The composition, structure, wearing and corrosion resistance of the implantation layers were studied. A preliminary explanation about the strengthening mechanism was given.  
        关键词：Ion implantation;Steel   
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        发布时间：2022-08-16
      • Xingliu Jiang,Tianmin Wang
        Vol. 09, Issue 8, (1986)
        摘要：A new method of pulsed ion beam implantation is introduced. As an example, the mixed Ti+ and N+ ion beams produced with the multiplate chamber were implanted onto the surface of iron and steel samples. The primary analysis shows that there are great changes of the compositions and the structures as well as properties of the sample in the implanted area.Because of the simple geometry and the high efficincy, the multiplate chamber is expected to have a wide application in the fields of material modification and testing.  
        关键词：Ion implantation;Pulsed ion beam;multiplate chamber   
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        发布时间：2022-08-16
      • Guowei Ling,Xiaozhong Zhang
        Vol. 09, Issue 8, (1986)
        摘要：By using X-ray diffraction analysis, the correlation between ion flux and resultant phase, resultant phase and temperature as well as the wear resistance and structure were studied. The experimental results indicated that the X-ray diffraction analysis is a suitable method for analysing implanted layer.  
        关键词：X-ray diffraction analysis;Nitrogen ion implantation;structural changes   
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        发布时间：2022-08-16
      • Shihua Zhang,Youmo Tu,Youben Zhao
        Vol. 09, Issue 8, (1986)
        摘要：The experiments for improving wearability of the mating surfaces of needle valve and its services life by ion implantation were reported.The result of the investigation shows: 1) Microwear of the mating surfaces could be measured accurately by radioactive isotope, and 2). It is no doubt that the wearability of the mating surfaces of needle valve could be improved.  
        关键词：nitrogen ion;injector;hot wear;Isotope   
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        发布时间：2022-08-16
      • Zhigang He,Heming Chen,Chunlai Ma,Hengde Li
        Vol. 09, Issue 8, (1986)
        摘要：The ion mixing technique has been used to study the oxidation of pure zirconium. Nickel and other alloying element atoms were introduced into the surface layers of zirconium by Ar ion mixing. The alloyed samples were oxidized in dry air or pure oxygen at temperatures ranging from 400℃ to 800℃. The oxidation kinetics, the structure and the element concentration profiles in the surface layers were studied by means of NRA, AES and X-ray diffraction. The influence of doped atoms on the stress in the lattice and the types of defects in the oxide layers are considered to be the main factors which produce the variations in the oxidation kinetics.  
        关键词：Ion beam mixing;oxidation kinetics;zirconium   
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        发布时间：2022-08-16
      • Peilu Wang,Xigang Lin,Jingyun Jiang,Yuanru Chen
        Vol. 09, Issue 8, (1986)
        摘要：An experimental process in formming silver-brass alloy mixing layer by ion beam mixing in brass matrix was described. Both the bondstrength and the friction-coefficient of the mixing layer were measured. The intermixing of silver atoms with brass matrix was confirmed by means of AES and SIMS profiling analysis.  
        关键词：Ion beam mixing;Alloy;friction   
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        发布时间：2022-08-16
      • Xiaozhong Zhang
        Vol. 09, Issue 8, (1986)
        摘要：The topography of wear surface or wear track will give the effects on the measurements of nitrogen migration. It suggests that the completion of implantation after the polishing by the fine powder less than M3.5 or the diamond paste of M10 is a reasonаblе process.  
        关键词：migration effect;Nitrogen ion implantation;Wear;iron and steel   
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        发布时间：2022-08-16
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