Rheologic behavior and PIM processing of WC-TiC-Co powder feedstock
来源期刊：Rare Metals2004年第3期
论文作者：QU Xuanhui, GAO Jianxiang, QIN Mingli, and LEI Changming
摘 要：<正> An improved wax-based binder was developed for the powder injection molding （PIM） of WC-TiC-Co cemented carbides. The critical powder loading and the rheologic behavior of the feedstock were determined. It was found that the critical powder loading could achieve up to 62.5% （volume fraction） and the feedstock exhibited a pseudo-plastic flow behavior. The injection molding, debinding and sintering processes were studied. The dimension deviation of the sintered samples could be controlled in the range of ±0.2% with the optimized processing parameters and the mechanical properties were better than or equivalent to those of the same alloy made by conventional press-sintering process.
QU Xuanhui, GAO Jianxiang, QIN Mingli, and LEI Changming
摘 要：<正> An improved wax-based binder was developed for the powder injection molding （PIM） of WC-TiC-Co cemented carbides. The critical powder loading and the rheologic behavior of the feedstock were determined. It was found that the critical powder loading could achieve up to 62.5% （volume fraction） and the feedstock exhibited a pseudo-plastic flow behavior. The injection molding, debinding and sintering processes were studied. The dimension deviation of the sintered samples could be controlled in the range of ±0.2% with the optimized processing parameters and the mechanical properties were better than or equivalent to those of the same alloy made by conventional press-sintering process.
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