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Acetylene Vacuum Carburizing Hitoshi Iwata1 (1.JH CORPORATION, Aichi, Japan) 摘要:Almost 30 years has passed since the publication of materials on vacuum carburizing technology, and is attracting..., at extremely low pressure for carburizing (below 1 kPa). This process is now showing the excellent quality and prospects for this technology in terms of quality, economy and safety. At present almost 70......
non-wetting between ceramic surfaces and molten metals requires pressure or interfacial reactions to ensure good bonding between metals and ceramics[4-6]. The infiltration of molten metal... 3.1 Infiltration Infiltration experiments demonstrate that pressure- less infiltration of molten Al-alloys in Si3N4 preforms could occur if the correct process conditions are employed. The critical......
(National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University, Nanchang 330063, China) Abstract: The vacuum gas pressure infiltration...; vacuum gas pressure infiltration method; microstructure; mechanical property Foundation item: Projects(51765045, 51365043) supported by the National Natural Science Foundation of China; Project......
of Technology, Harbin 150001, China)Abstract:Ti-Al complex with a network microstructure was successfully fabricated by pressure infiltration. The fabricated Ti-Al complex was investigated and analyzed by OM, XRD, SEM and EDS. The temperature of pressure infiltration was reduced by using Al-Si eutectic alloy instead of pure Al, which can effectively decrease non-diffusion reaction between liquid Al......
such as the automobile, railway and aerospace industries [3, 4]. Many fabricating processes of aluminum foams have been developed [5], the practical preparation methods include vacuum infiltration casting, liquid metal foaming with gas or foaming agents and powder metallurgy [6]. Among them, vacuum infiltration casting is a promising method for preparation of open-celled aluminum foams owing to its simple......
60 mL/s, total pressure 20 kPa, infiltration time 15 h. The verification experiment proves the effectiveness of the orthogonal experiments. Under the optimal conditions, the graphitization degree..., temperature 650 ℃, LPG concentration 80%, gas flux 60 mL/s, total pressure 20 kPa and infiltration time 15 h. The corresponding density and graphitization degree are 1.69 g/cm3 and 75%, respectively......
of SiC particles are preferred[2]. Methods to fabricate high volume fraction composites include pressure infiltration[3, 4], liquid-exchange[5] and pressureless infiltration[6, 7]. During pressureless... pressure. Part Mg vapor is condensed on the furnace wall as Mg, MgO or Mg2N3 and part is taken out by the flowing nitrogen[14]. The infiltration rate decreases after 60min resulted from Mg loss after long......
by reactive gas-pressure infiltration and squeeze casting of Al melt into sintered porous preforms (30% TiO2 and 70% Al2O3 in volume fraction) had an interpenetrating network structure, which attained... is the capillary force. Compared with squeeze casting and gas-pressure infiltration, reactive melt infiltration offers a possibility to produce freeform near-net shape composite at low production costs......
15 September 2006 Abstract: A kind of aluminum cooler was manufactured by means of vacuum brazing technique, and the cooler was examined by hydraulic pressure test. The result indicates...: aluminum cooler; vacuum brazing; hydraulic pressure test; fracture 1 Introduction Aluminum plate-wing style cooler is used for the cooling of machine oil in car engine. It is one of the key components......
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