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| 1 | Solvent de binding of water soluble binder in powder injection moulding显示文摘The solvent debinding of water soluble binder in powder injection moulding (MIM) was investigated systematically, including the effects of solvent types, temperature and the thickness of green parts on the solvent debinding rate. After studying the debinding of a green part with a thickness of 4.26 mm, it was found that, the debinding rate of polyethylene glycol(PEG) in water and alcohol was high initially, and then decreased; however, it would increase with temperature increasing. At room temperature, the dissolution rate of PEG in water was higher than that in alcohol, but the latter would be much faster with temperature increasing because the debinding activation energy in alcohol was 51.44 kJ·mol -1 ·K -1 , much higher than 24.23 kJ·mol -1 ·K -1 in water. With a green part thickness larger than 4.26 mm, the debinding was controlled by diffusion; but with that smaller than 2.36 mm, the debinding was controlled by both dissolution and diffusion. | Li Songlin(李松林) Huang Baiyun(黄伯云) Qu Xuanhui(曲选辉) Li Yimin(李益民) | 1999 | 中国有色金属学会会刊:英文版1999，9，3： | 14 |
| 2 | LOW TEMPERATURE THERMAL DEBINDING BEHAVIOR OF WAX-BASED MULTI-COMPONENT BINDER FOR TUNGSTEN HEAVY ALLOY显示文摘1INTRODUCTIONPowderinjectionmoulding(PIM)isanewprocessformanufacturingnearnetshapepartswithadvantagesoflowcost,highperformanc... | Fan, Jinglian Huang, Baiyun Qu, Xuanhui Li, Yiming | 1999 | 中国有色金属学会会刊:英文版1999，9，1： | 10 |
| 3 | DEBINDING MECHANISM AND KINETICS FOR PW IN PW-WC FEEDSTOCK UNDER AIR ATMOSPHERE显示文摘DEBINDINGMECHANISMANDKINETICSFORPWINPW-WCFEEDSTOCKUNDERAIRATMOSPHERELiangShuquan;HuangBaiyun;QuXuanhui(NationalLaboratoryforP... | Liang Shuquan Huang Baiyun Qu Xuanhui (National Laboratory for Powder Metallurgy ,Central South University of Technology, Changsha 410083) | 1996 | 中国有色金属学会会刊:英文版1996，6，2： | 1 |
| 4 | Effect of thermo-mechanical properties of PIM feedstock on compacts shape retention during debinding process显示文摘The removal of the binder from the powder compacts (debinding) can be a slow step and a source of problems. To improve the debinding process of powder injection molding operation, it’s necessary to understand the thermal and mechanical properties of powder injection molding feedstocks and to find the major causes responsible for molding difficulties and compacts shape retention during debinding process. The effects of thermo mechanical properties of the PIM feedstock on the compacts shape retention during debinding process were discussed and explained from practical point of view. The results indicate that the heat of fusion affects the cooling time. The binder component with high heat of fusion and high decomposed temperature is more effective as the second binder component for the compact to retain its shape during debinding. | K.A.Khalil 黄伯云 李益民 | 2001 | 中国有色金属学会会刊:英文版2001，11，4： | 1 |
| 5 | Novel PEG-based binder system and its debinding properties for MIM显示文摘Binder system is critical to the success of metal injection molding(MIM). A novel PEG based binder for MIM was developed, which was made of high density polyethylene (HDPE), polyethylene glycol (PEG), polymer W, stearic acid(SA) and dioctyl phthalate (DOP). The components of binder have interactions with each other, so the binder have good compatibility. The thermal decomposition process of binder exhibits three stages during debinding. The binder could be debound by pyrolysis or solvent, and could easily be removed in a short time in ethanol without defects and evironmental concern. A lot of interconnected pores formed after solvent debinding, which is helpful to the escape of pyrolysis gases during subsequent thermal debinding or presintering. [ | 李笃信 曲选辉 黄伯云 钟孝贤 李松林 李益民 | 2001 | 中国有色金属学会会刊:英文版2001，11，1： | 1 |
| 6 | THERMAL DEBINDING MECHANISM OF METAL INJECTION MOLDING COMPACTS IN VACUUM显示文摘1INTRODUCTIONDuringthepastfewyears,powderinjectionmolding(PIM)hademergedasanadvancedmanufacturingtechnology[1].Thecombination... | Liu, Shaojun Huang, Baiyun Qu, Xuanhui Zhong, Xiaoxian Yan, Wuhua Li, Yiming | 1999 | 中国有色金属学会会刊:英文版1999，9，2： | 1 |
| 7 | Binder composition and debinding process in PIM of AlN显示文摘The thermal degradation behaviors of AlN green specimens were studied by thermogravimetry analysis during the ceramic powder injection molding debinding process. The optimum binder composition and the debinding cycle were demonstrated by observing the TGA and DTA plots of AlN green specimens and analyzing the microstructure at different temperatures. By adding HDPE into the PW EVA binder used in powder injection molding AlN can effectively reduce the mass lose rate in debinding process and improve the shape retention ability. At last, aluminum nitride ceramic with high room temperature thermal conductivity of 162.5?W·m -1 ·K -1 was produced. [ | 林健凉 曲选辉 黄栋生 李笃信 秦明礼 | 2001 | 中国有色金属学会会刊:英文版2001，11，3： | 0 |
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